congressgov-mcp-server

Name: congressgov-mcp-server
Author: cyanheads

Server Details

Access U.S. congressional data (bills, votes, members, committees) via MCP.

If you are the author of this connector, you can claim ownership by verifying the domain or GitHub account it belongs to. Claimed connector authors can inspect health checks, view analytics, and manage their listing.

Status: Healthy
Uptime: 100.0% over 58 days
Last Tested: 2026-10-14 15:45
Transport: Streamable HTTP · MCP 2025-11-25
URL
Repository: cyanheads/congressgov-mcp-server
GitHub Stars: 1
Server Listing: congressgov-mcp-server

TDQS

A4.4/5.0

Scored 2026-09-22 20:30 across 10 tools

Disambiguation5/5

Each tool targets a distinct Congress.gov resource: bills, bill summaries, committees, committee reports, CRS reports, daily record, enacted laws, members, roll votes, and nominations. Potential overlaps are explicitly disambiguated in descriptions — e.g., bill_lookup's 'summaries' operation vs. bill_summaries notes exactly when to use each, and committee_lookup vs committee_reports are clearly separate resources. No two tools appear to do the same thing.

Naming Consistency4/5

All tools follow a consistent congressgov_<resource> snake_case pattern with uniform prefix, making the family instantly recognizable. The suffix varies by resource type (lookup, reports, record, laws, votes, nominations) rather than a uniform verb_noun structure, but the pattern is predictable and internally consistent across all ten tools.

Tool Count5/5

Ten tools is squarely in the well-scoped range for a legislative data server covering the breadth of Congress.gov surface area. Each tool earns its place — bills, summaries, committees, reports, CRS, record, laws, members, votes, and nominations each map to a distinct major resource with no redundant tools.

Completeness4/5

The surface covers the core Congress.gov domain comprehensively: deep bill lifecycle (actions, amendments, cosponsors, committees, subjects, summaries, text, titles, related), committees, both report types, CRS reports, congressional record, enacted laws, members, votes, and nominations with confirmation pipeline data. Minor gaps exist — keyword search is explicitly absent, and standalone hearings/treaty documents lack dedicated lookup tools — but agents can accomplish core workflows without dead ends.

Available Tools

10 tools

congressgov_bill_lookupCongress.gov Bill Lookup

Read-onlyIdempotent

Inspect

Browse and retrieve U.S. legislative bill data from Congress.gov. Discover bills by filtering on congress, bill type, and date range — there is no keyword search. Use 'list' to browse (requires congress, defaults to most-recently-updated first), 'get' for full bill detail (sponsor, policy area, CBO estimates, law info), or drill into a specific bill with 'actions', 'amendments', 'cosponsors', 'committees', 'subjects', 'summaries', 'text', 'titles', or 'related' (each requires congress + billType + billNumber). 'text' lists the published versions and their format URLs; 'content' then reads one version's actual text, a bounded character window at a time. 'summaries' takes an optional versionCode selector and returns each row's text a bounded character window at a time — a row past the window carries textTotalCharacters/textTruncated/textNextOffset, and characterOffset reads on from there.

ParametersJSON Schema

Name	Required	Description	Default
`limit`	No	Results per page (1-250).
`order`	No	Sort order for 'list' (sorts by update date). 'recent' (default) is newest first; 'oldest' is ascending. Ignored by other operations.	recent
`format`	No	Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.	text
`offset`	No	Pagination offset.
`billType`	No	Bill type code. Required for get and sub-resource operations.
`congress`	Yes	Congress number (e.g., 118, 119).
`operation`	Yes	Which data to retrieve.
`billNumber`	No	Bill number. Required for get and sub-resource operations. Accepts the digit-string form list rows carry (e.g. "9479") as well as a number.
`toDateTime`	No	End of date range filter (ISO 8601). Same field semantics as fromDateTime.
`versionCode`	No	Which summary version 'summaries' returns — the versionCode a summary row carries ('00' introduced, '49' public law). Selection runs over the bill's whole summary list, which Congress.gov publishes no filter for, and limit/offset then page the matching rows. Omit to return every version. Ignored by other operations.
`fromDateTime`	No	Start of date range filter (ISO 8601). Filters by the bill's update date — when Congress.gov last touched the record — not by the bill's latest legislative action.
`characterLimit`	No	Maximum characters to return (1-100000) — for the document window on 'content', and for each row's summary text on 'summaries'. Legislative documents run past a million characters and an enacted bill's summary past two hundred thousand, so either takes several windows.
`characterOffset`	No	First character to return, 0-based — of the document on 'content', and of every returned row's summary text on 'summaries'. Offsets are exact and are never snapped to a section or paragraph break, so feeding back the response's nextOffset (or a summary row's textNextOffset) walks the whole text with every character returned exactly once.
`textVersionIndex`	No	Which text version 'content' reads, 0-based against the same order 'text' returns — 0 is the most recent version. Ignored by other operations.

Output Schema

ParametersJSON Schema

Name	Required	Description
`bill`	No	Dynamic upstream JSON record.
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`content`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_bill_summariesCongress.gov Bill Summaries

Read-onlyIdempotent

Inspect

Browse recent CRS (Congressional Research Service) bill summaries — plain-language summaries of bills at each legislative stage, useful for answering "what's happening in Congress?". The fromDateTime/toDateTime filters apply to the summary's update time, not the bill's action date, so results include recently rewritten summaries of older bills. Defaults to summaries updated in the last 7 days. Each item shows both the bill's action date and the summary update date. A page stops adding rows once it reaches a fixed response-character budget, and a summary longer than the per-row window arrives as an exact character window carrying textTotalCharacters/textTruncated/textNextOffset; pagination.nextOffset continues the page and a row's textNextOffset continues its text. For summaries of one specific bill — and to read a windowed summary to the end — use congressgov_bill_lookup with operation='summaries' instead.

ParametersJSON Schema

Name	Required	Description
`limit`	No	Results per page (1-250).
`offset`	No	Pagination offset.
`billType`	No	Bill type filter. Requires 'congress'.
`congress`	No	Congress number. Optional — omit for summaries across all congresses.
`toDateTime`	No	End of date range (ISO 8601), filtered on the summary update time. Defaults to now.
`fromDateTime`	No	Start of date range (ISO 8601), filtered on the summary update time. Defaults to 7 days ago if neither date param is set.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_committee_lookupCongress.gov Committee Lookup

Read-onlyIdempotent

Inspect

Browse congressional committees and their legislation, reports, and nominations. Committee codes follow the pattern chamber-prefix (h/s/j) + abbreviation + 2-digit number — use 'list' (with optional 'filter' for name→code resolution) to discover codes, then 'get' or drill into 'bills', 'reports', or 'nominations' ('nominations' is Senate-only). 'get' and sub-resources only need committeeCode (chamber is inferred from the prefix); pass chamber explicitly to override. The 'bills' sub-resource defaults to 'recent' order (newest update-date first); pass order='oldest' for ascending update-date order. Upstream omits bill titles from the 'bills' sub-resource — rows carry only {congress, billType, billNumber, actionDate, relationshipType, url}; chain 'congressgov_bill_lookup get' per row to retrieve titles and policy area.

ParametersJSON Schema

Name	Required	Description	Default
`limit`	No	Results per page (1-250).
`order`	No	Sort order for the 'bills' sub-resource. 'recent' (default) returns newest update-date first; 'oldest' returns ascending update-date order. Ignored by other operations.	recent
`filter`	No	Filter committee-list results by name (e.g., 'transportation', 'armed services'). Only meaningful for 'list'; fuzzy-matched rows are labeled approximate.
`offset`	No	Pagination offset.
`chamber`	No	Chamber filter for 'list', or override for 'get' and sub-resources (otherwise inferred from committeeCode prefix).
`congress`	No	Congress number.
`operation`	Yes	Which data to retrieve.
`committeeCode`	No	Committee system code, e.g. 'hsju00'. Required for 'get' and sub-resources. Codes are letters + a 2-digit suffix and are matched case-insensitively. Any other non-blank value is treated as a committee name and resolved automatically — single-word names ('Judiciary') included — or use operation:'list' with filter to browse.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`committee`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_committee_reportsCongress.gov Committee Reports

Read-onlyIdempotent

Inspect

Browse and retrieve committee reports from Congress.gov — reports accompany legislation reported out of committee and explain the bill's purpose, committee amendments, dissenting views, and the committee vote. Report types are 'hrpt' (House), 'srpt' (Senate), and 'erpt' (Executive). 'text' lists the published format URLs; 'content' then reads the report's actual text, a bounded character window at a time.

ParametersJSON Schema

Name	Required	Description	Default
`limit`	No	Results per page (1-250).
`format`	No	Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.	text
`offset`	No	Pagination offset.
`congress`	Yes	Congress number.
`operation`	Yes	Which data to retrieve.
`reportType`	No	Report type. Required for get, text, and content operations.
`reportNumber`	No	Committee report number. Required for get, text, and content operations.
`characterLimit`	No	Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows.
`characterOffset`	No	First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`text`	No	Dynamic upstream JSON records.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`report`	No	Dynamic upstream JSON record.
`content`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_crs_reportsCongress.gov CRS Reports

Read-onlyIdempotent

Inspect

Browse and retrieve CRS (Congressional Research Service) reports — nonpartisan policy analyses by subject-matter experts at the Library of Congress, covering policy areas, legislative proposals, and legal questions. Report IDs use letter-number codes (e.g., R40097, RL33612, IF12345). Use 'list' to browse available reports or 'get' for full detail (authors, topics, summary, download formats).

ParametersJSON Schema

Name	Required	Description
`limit`	No	Results per page (1-250).
`offset`	No	Pagination offset.
`operation`	Yes	Which data to retrieve.
`reportNumber`	No	CRS report ID (e.g., 'R40097'). Required for 'get'.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`report`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_daily_recordCongress.gov Daily Record

Read-onlyIdempotent

Inspect

Browse the daily Congressional Record — floor speeches, debates, and legislative text published each day Congress is in session. Navigation is hierarchical: volumes (via 'list') → issues (via 'issues') → articles (via 'articles'). Use 'list' to find recent volumes, 'issues' to see what's in a volume, and 'articles' to access individual speeches and debate sections. 'articles' lists each article and its format URLs; 'content' then reads one article's actual text, a bounded character window at a time.

ParametersJSON Schema

Name	Required	Description	Default
`limit`	No	Results per page (1-250).
`format`	No	Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.	text
`offset`	No	Pagination offset.
`operation`	Yes	Which data to retrieve.
`issueNumber`	No	Issue number within a volume. Required for 'articles' and 'content'. List rows carry this as a string (e.g. "109") — both forms are accepted.
`articleIndex`	No	Which article 'content' reads, 0-based against the issue's whole article sequence — the same absolute position 'articles' pages through with offset. Ignored by other operations.
`volumeNumber`	No	Volume number. Required for 'issues', 'articles', and 'content'. Accepts a number or the digit-string form list rows carry.
`characterLimit`	No	Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows.
`characterOffset`	No	First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`content`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_enacted_lawsCongress.gov Enacted Laws

Read-onlyIdempotent

Inspect

Browse enacted public and private laws from Congress.gov by congress and law type ('pub' for public laws, 'priv' for private). 'list' filters by enactment status and law type — the discovery path 'bill_lookup' does not offer. 'get' returns the origin bill record (sponsor, actions, summaries, text), with the public/private law citation on the bill's 'laws' array (e.g. {"number":"118-2","type":"Public Law"}).

ParametersJSON Schema

Name	Required	Description
`limit`	No	Results per page (1-250).
`offset`	No	Pagination offset.
`lawType`	No	Law type — 'pub' (public laws, general application, most common) or 'priv' (private laws, specific individuals or entities). Required for 'get'.
`congress`	Yes	Congress number.
`lawNumber`	No	Law number, as carried by a 'list' row's `laws[].number` — either the full citation ('118-90', rendered as 'Public Law 118-90') or the portion after the hyphen ('90'); the prefix is the congress and must match `congress`. Not the row's own `number`, which is the origin bill. Required for 'get'.
`operation`	Yes	Which data to retrieve.

Output Schema

ParametersJSON Schema

Name	Required	Description
`law`	No	Dynamic upstream JSON record.
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_member_lookupCongress.gov Member Lookup

Read-onlyIdempotent

Inspect

Discover congressional members and their legislative activity. No name search. For 'list', filter by stateCode (optionally with district), by congress, or by both together (e.g., 118th Congress + CA, or CA district 12 in the 118th). Add currentMember=true to restrict to currently serving members. Once you have a bioguideId, use 'get' for full profile or 'sponsored'/'cosponsored' for their legislative portfolio.

ParametersJSON Schema

Name	Required	Description
`limit`	No	Results per page (1-250).
`offset`	No	Pagination offset.
`congress`	No	Congress number to filter by.
`district`	No	Congressional district number. Requires stateCode. Use 0 for at-large.
`operation`	Yes	Which data to retrieve.
`stateCode`	No	Two-letter state code (e.g., 'CA', 'TX').
`bioguideId`	No	Unique member identifier (e.g., 'P000197'). Required for get/sponsored/cosponsored.
`currentMember`	No	Filter to currently serving members. Omit to include both current and former members.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`member`	No	Dynamic upstream JSON record.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_roll_votesCongress.gov Roll Votes

Read-onlyIdempotent

Inspect

Retrieve U.S. congressional roll call votes and individual member voting positions for either chamber. Set 'chamber' to 'house' (default, from the Congress.gov API) or 'senate' (from the Senate's official LIS feed). Use 'list' to find votes by congress and session (newest first by default), 'get' for vote details (question, result, tallies, party breakdown, associated bill/nomination/amendment), or 'members' for how each member voted.

ParametersJSON Schema

Name	Required	Description	Default
`limit`	No	Results per page (1-250).
`order`	No	Sort order for 'list'. 'recent' (default) returns newest first; 'oldest' returns ascending. House sorts by vote update date (with 'recent', offset=0 always returns the strictly newest page); Senate sorts by roll call number. Ignored by 'get' and 'members'.	recent
`offset`	No	Pagination offset.
`chamber`	No	Chamber whose votes to query. 'house' (default) draws from the Congress.gov API; 'senate' draws from the Senate's official LIS roll-call feed. Roll call numbers reset each session and are specific to one chamber.	house
`session`	Yes	Session number (1 or 2). Odd years are session 1, even years session 2.
`congress`	Yes	Congress number.
`operation`	Yes	Which data to retrieve.
`voteNumber`	No	Roll call vote number. Required for 'get' and 'members'.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`vote`	No	Dynamic upstream JSON record.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

congressgov_senate_nominationsCongress.gov Senate Nominations

Read-onlyIdempotent

Inspect

Browse presidential nominations to federal positions and track the Senate confirmation process. Use 'list' to browse, 'get' for nomination detail, 'actions'/'committees'/'hearings' for confirmation pipeline data, or 'nominees' to retrieve individual appointees in a multi-nominee batch. Nominations use 'PN' (Presidential Nomination) numbering. Most nominations carry confirmation activity on the parent (e.g., PN1000); multi-part parents (e.g., PN851) carry no activity of their own — their actions, committees, hearings, and nominees live on partitioned children (PN851-1, PN851-2, …). 'get' on a parent that has no nominees array signals the partitioned form is needed for everything below it.

ParametersJSON Schema

Name	Required	Description
`limit`	No	Results per page (1-250).
`offset`	No	Pagination offset.
`ordinal`	No	Batch ordinal within a multi-nominee nomination. Each ordinal addresses a group of nominees; the 'nominees' operation returns every individual in that batch. Use 'get' first to see available ordinals on the nomination's `nominees` array (multi-part parents have no nominees array — use a partitioned form like '851-1' instead).
`congress`	Yes	Congress number.
`operation`	Yes	Which data to retrieve.
`nominationNumber`	No	Nomination number. Use the bare form (e.g. '1000') for nominations whose activity sits on the parent; use the partitioned form (e.g. '851-1') for sub-resources of a multi-part nomination. Required for detail operations.

Output Schema

ParametersJSON Schema

Name	Required	Description
`data`	No	Result rows. Per-tool item shape is rendered in the markdown body.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Guidance when results are empty, a page is past the end, or a caveat applies.
`nomination`	No	Dynamic upstream JSON record.
`pagination`	No	Pagination metadata: total count and next offset.
`totalCount`	No	Total results across all pages.
`effectiveQuery`	No	The browse scope and applied filters.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

10 tool updatesOct 13, 2026

Changedcongressgov_bill_lookup2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error",
-  "document_unavailable",
-  "format_unavailable",
-  "document_fetch_failed",
-  "document_too_large",
-  "offset_past_end"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "document_unavailable",
+  "format_unavailable",
+  "document_fetch_failed",
+  "document_too_large",
+  "offset_past_end",
+  "incompatible_identity"
+]

Changedcongressgov_bill_summaries2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout"
+]

Changedcongressgov_committee_lookup2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout"
+]

Changedcongressgov_committee_reports2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error",
-  "document_unavailable",
-  "format_unavailable",
-  "document_fetch_failed",
-  "document_too_large",
-  "offset_past_end"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "document_unavailable",
+  "format_unavailable",
+  "document_fetch_failed",
+  "document_too_large",
+  "offset_past_end",
+  "incompatible_identity"
+]

Changedcongressgov_crs_reports2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "incompatible_identity"
+]

Changedcongressgov_daily_record2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error",
-  "document_unavailable",
-  "format_unavailable",
-  "document_fetch_failed",
-  "document_too_large",
-  "offset_past_end"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "document_unavailable",
+  "format_unavailable",
+  "document_fetch_failed",
+  "document_too_large",
+  "offset_past_end",
+  "incompatible_identity"
+]

Changedcongressgov_enacted_laws2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout"
+]

Changedcongressgov_member_lookup2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout"
+]

Changedcongressgov_roll_votes2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "incompatible_identity"
+]

Changedcongressgov_senate_nominations2 fields changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: A process-local attempt budget or the shared upstream credential/IP quota was reached; upstream hourly limits vary and DEMO_KEY also has a daily quota. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `upstream_timeout`: The Congress.gov request deadline expired or the upstream returned an HTTP timeout response. `incompatible_identity`: A list operation carries an entity identifier that only a detail operation uses. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "not_found",
-  "rate_limited",
-  "invalid_request",
-  "upstream_error"
-]New value: +[
+  "not_found",
+  "rate_limited",
+  "invalid_request",
+  "upstream_error",
+  "upstream_timeout",
+  "incompatible_identity"
+]

3 tool updatesSep 22, 2026

Changedcongressgov_bill_lookup4 fields changed

changedInput schema / properties / characterLimit / description

Previous value: -"Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows."New value: +"Maximum characters to return (1-100000) — for the document window on 'content', and for each row's summary text on 'summaries'. Legislative documents run past a million characters and an enacted bill's summary past two hundred thousand, so either takes several windows."

changedInput schema / properties / characterOffset / description

Previous value: -"First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once."New value: +"First character to return, 0-based — of the document on 'content', and of every returned row's summary text on 'summaries'. Offsets are exact and are never snapped to a section or paragraph break, so feeding back the response's nextOffset (or a summary row's textNextOffset) walks the whole text with every character returned exactly once."

addedInput schema / properties / versionCode

Added value: +{
+  "description": "Which summary version 'summaries' returns — the versionCode a summary row carries ('00' introduced, '49' public law). Selection runs over the bill's whole summary list, which Congress.gov publishes no filter for, and limit/offset then page the matching rows. Omit to return every version. Ignored by other operations.",
+  "type": "string"
+}

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."

Changedcongressgov_committee_reports1 field changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."

Changedcongressgov_daily_record1 field changed

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of every text the call would window — the document on 'content', or every returned row's summary text on 'summaries' — so the window would be empty. Other values are possible when a failure originates below the handler."

9 tool updatesAug 30, 2026

Changedcongressgov_bill_lookup2 fields changed

addedOutput schema / properties / bill

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

addedOutput schema / properties / content

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_committee_lookup2 fields changed

changedInput schema / properties / filter / description

Previous value: -"Filter committee list results by name (e.g., 'transportation', 'armed services'). Only meaningful for 'list'. Fetches the full chamber set and matches client-side; fuzzy-matched rows are labeled approximate."New value: +"Filter committee-list results by name (e.g., 'transportation', 'armed services'). Only meaningful for 'list'; fuzzy-matched rows are labeled approximate."

addedOutput schema / properties / committee

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_committee_reports3 fields changed

addedOutput schema / properties / content

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

addedOutput schema / properties / report

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

addedOutput schema / properties / text

Added value: +{
+  "description": "Dynamic upstream JSON records.",
+  "items": {
+    "additionalProperties": {},
+    "description": "Dynamic upstream JSON record.",
+    "properties": {},
+    "type": "object"
+  },
+  "type": "array"
+}

Changedcongressgov_crs_reports1 field changed

addedOutput schema / properties / report

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_daily_record1 field changed

addedOutput schema / properties / content

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_enacted_laws1 field changed

addedOutput schema / properties / law

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_member_lookup5 fields changed
- addedInput schema / properties / bioguideId / pattern
```
Added value: +"^[A-Za-z]\\d{6}$"
```
- removedInput schema / properties / stateCode / maxLength
```
Removed value: -2
```
- removedInput schema / properties / stateCode / minLength
```
Removed value: -2
```
- addedInput schema / properties / stateCode / pattern
```
Added value: +"^[A-Za-z]{2}$"
```
- addedOutput schema / properties / member
```
Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}
```

Changedcongressgov_roll_votes1 field changed

addedOutput schema / properties / vote

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

Changedcongressgov_senate_nominations1 field changed

addedOutput schema / properties / nomination

Added value: +{
+  "additionalProperties": {},
+  "description": "Dynamic upstream JSON record.",
+  "properties": {},
+  "type": "object"
+}

10 tool updatesAug 25, 2026

Changedcongressgov_bill_lookup6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error",
+            "document_unavailable",
+            "format_unavailable",
+            "document_fetch_failed",
+            "document_too_large",
+            "offset_past_end"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_bill_summaries6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "data",
+      "pagination",
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "data",
-  "pagination",
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_committee_lookup6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_committee_reports6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error",
+            "document_unavailable",
+            "format_unavailable",
+            "document_fetch_failed",
+            "document_too_large",
+            "offset_past_end"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_crs_reports6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_daily_record6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). `document_unavailable`: The 'content' selection resolves to no retrievable document — the text version or article index is past the end of the list, the record publishes no formats at all, or Congress.gov does not hold the file its own metadata names. `format_unavailable`: The document exists but publishes nothing in the requested 'format' — some text versions and committee reports ship PDF only, and no Congressional Record article publishes XML. `document_fetch_failed`: www.congress.gov did not return a readable document — a non-2xx status, a network failure, an empty body, or a content type that is not text or XML. `document_too_large`: The document is larger than the byte ceiling this server retrieves, so no character window can be served from it. `offset_past_end`: characterOffset is at or beyond the last character of the document, so the window would be empty. Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error",
+            "document_unavailable",
+            "format_unavailable",
+            "document_fetch_failed",
+            "document_too_large",
+            "offset_past_end"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_enacted_laws6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_member_lookup6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_roll_votes6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

Changedcongressgov_senate_nominations6 fields changed

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "effectiveQuery",
+      "totalCount"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `not_found`: A requested bill, member, committee, report, vote, or nomination does not exist in Congress.gov. `rate_limited`: The Congress.gov API rate limit (5,000 requests/hour per key) was exceeded. `invalid_request`: Congress.gov rejected the request as malformed — a bad date range or an identifier with an unexpected shape. `upstream_error`: Congress.gov returned an unexpected error (5xx or another non-2xx status). Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "not_found",
+            "rate_limited",
+            "invalid_request",
+            "upstream_error"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "effectiveQuery",
-  "totalCount"
-]

5 tool updatesAug 17, 2026

Changedcongressgov_bill_lookup10 fields changed

addedInput schema / properties / billNumber / anyOf

Added value: +[
+  {
+    "description": "Positive integer form.",
+    "exclusiveMinimum": 0,
+    "maximum": 9007199254740991,
+    "type": "integer"
+  },
+  {
+    "description": "Digit-string form, as list rows carry it.",
+    "pattern": "^0*[1-9]\\d*$",
+    "type": "string"
+  }
+]

changedInput schema / properties / billNumber / description

Previous value: -"Bill number. Required for get and sub-resource operations."New value: +"Bill number. Required for get and sub-resource operations. Accepts the digit-string form list rows carry (e.g. \"9479\") as well as a number."

removedInput schema / properties / billNumber / exclusiveMinimum
```
Removed value: -0
```
removedInput schema / properties / billNumber / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / billNumber / type
```
Removed value: -"integer"
```

addedInput schema / properties / characterLimit

Added value: +{
+  "default": 25000,
+  "description": "Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows.",
+  "maximum": 100000,
+  "minimum": 1,
+  "type": "integer"
+}

addedInput schema / properties / characterOffset

Added value: +{
+  "default": 0,
+  "description": "First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once.",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

addedInput schema / properties / format

Added value: +{
+  "default": "text",
+  "description": "Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.",
+  "enum": [
+    "text",
+    "xml"
+  ],
+  "type": "string"
+}

changedInput schema / properties / operation / enum

Previous value: -[
-  "list",
-  "get",
-  "actions",
-  "amendments",
-  "cosponsors",
-  "committees",
-  "subjects",
-  "summaries",
-  "text",
-  "titles",
-  "related"
-]New value: +[
+  "list",
+  "get",
+  "actions",
+  "amendments",
+  "cosponsors",
+  "committees",
+  "subjects",
+  "summaries",
+  "text",
+  "titles",
+  "related",
+  "content"
+]

addedInput schema / properties / textVersionIndex

Added value: +{
+  "default": 0,
+  "description": "Which text version 'content' reads, 0-based against the same order 'text' returns — 0 is the most recent version. Ignored by other operations.",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

Changedcongressgov_committee_lookup2 fields changed

changedInput schema / properties / committeeCode / description

Previous value: -"Committee system code, e.g. 'hsju00'. Required for 'get' and sub-resources. Codes are lowercase letters + 2-digit suffix. Pass a committee name here and the tool will attempt to resolve it automatically — or use operation:'list' with filter to browse."New value: +"Committee system code, e.g. 'hsju00'. Required for 'get' and sub-resources. Codes are letters + a 2-digit suffix and are matched case-insensitively. Any other non-blank value is treated as a committee name and resolved automatically — single-word names ('Judiciary') included — or use operation:'list' with filter to browse."

changedInput schema / properties / committeeCode / pattern

Previous value: -"^([a-z]{2,6}\\d{2}|.*\\s.*)$"New value: +"\\S"

Changedcongressgov_committee_reports6 fields changed

addedInput schema / properties / characterLimit

Added value: +{
+  "default": 25000,
+  "description": "Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows.",
+  "maximum": 100000,
+  "minimum": 1,
+  "type": "integer"
+}

addedInput schema / properties / characterOffset

Added value: +{
+  "default": 0,
+  "description": "First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once.",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

addedInput schema / properties / format

Added value: +{
+  "default": "text",
+  "description": "Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.",
+  "enum": [
+    "text",
+    "xml"
+  ],
+  "type": "string"
+}

changedInput schema / properties / operation / enum

Previous value: -[
-  "list",
-  "get",
-  "text"
-]New value: +[
+  "list",
+  "get",
+  "text",
+  "content"
+]

changedInput schema / properties / reportNumber / description

Previous value: -"Committee report number. Required for get and text operations."New value: +"Committee report number. Required for get, text, and content operations."

changedInput schema / properties / reportType / description

Previous value: -"Report type. Required for get and text operations."New value: +"Report type. Required for get, text, and content operations."

Changedcongressgov_daily_record16 fields changed

addedInput schema / properties / articleIndex

Added value: +{
+  "default": 0,
+  "description": "Which article 'content' reads, 0-based against the issue's whole article sequence — the same absolute position 'articles' pages through with offset. Ignored by other operations.",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

addedInput schema / properties / characterLimit

Added value: +{
+  "default": 25000,
+  "description": "Maximum characters to return for 'content' (1-100000). Legislative documents run past a million characters, so a full bill takes several windows.",
+  "maximum": 100000,
+  "minimum": 1,
+  "type": "integer"
+}

addedInput schema / properties / characterOffset

Added value: +{
+  "default": 0,
+  "description": "First character to return for 'content', 0-based. Offsets are exact and are never snapped to a section or paragraph break, so feeding the response's nextOffset back walks the whole document with every character returned exactly once.",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

addedInput schema / properties / format

Added value: +{
+  "default": "text",
+  "description": "Document format for 'content'. 'text' is GPO's Formatted Text — plain, pre-formatted print output, published for every document checked. 'xml' prefers United States Legislative Markup and falls back to Formatted XML; it exists on some bill text versions and on no committee report or Congressional Record article. PDF is not retrieved — read one at the format URLs 'text'/'articles' return.",
+  "enum": [
+    "text",
+    "xml"
+  ],
+  "type": "string"
+}

addedInput schema / properties / issueNumber / anyOf

Added value: +[
+  {
+    "description": "Positive integer form.",
+    "exclusiveMinimum": 0,
+    "maximum": 9007199254740991,
+    "type": "integer"
+  },
+  {
+    "description": "Digit-string form, as list rows carry it.",
+    "pattern": "^0*[1-9]\\d*$",
+    "type": "string"
+  }
+]

changedInput schema / properties / issueNumber / description

Previous value: -"Issue number within a volume. Required for 'articles'."New value: +"Issue number within a volume. Required for 'articles' and 'content'. List rows carry this as a string (e.g. \"109\") — both forms are accepted."

removedInput schema / properties / issueNumber / exclusiveMinimum
```
Removed value: -0
```
removedInput schema / properties / issueNumber / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / issueNumber / type
```
Removed value: -"integer"
```

changedInput schema / properties / operation / enum

Previous value: -[
-  "list",
-  "issues",
-  "articles"
-]New value: +[
+  "list",
+  "issues",
+  "articles",
+  "content"
+]

addedInput schema / properties / volumeNumber / anyOf

Added value: +[
+  {
+    "description": "Positive integer form.",
+    "exclusiveMinimum": 0,
+    "maximum": 9007199254740991,
+    "type": "integer"
+  },
+  {
+    "description": "Digit-string form, as list rows carry it.",
+    "pattern": "^0*[1-9]\\d*$",
+    "type": "string"
+  }
+]

changedInput schema / properties / volumeNumber / description

Previous value: -"Volume number. Required for 'issues' and 'articles'."New value: +"Volume number. Required for 'issues', 'articles', and 'content'. Accepts a number or the digit-string form list rows carry."

removedInput schema / properties / volumeNumber / exclusiveMinimum
```
Removed value: -0
```
removedInput schema / properties / volumeNumber / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / volumeNumber / type
```
Removed value: -"integer"
```

changedOutput schema / required

Previous value: -[
-  "data",
-  "pagination",
-  "effectiveQuery",
-  "totalCount"
-]New value: +[
+  "effectiveQuery",
+  "totalCount"
+]

Changedcongressgov_enacted_laws5 fields changed

addedInput schema / properties / lawNumber / anyOf

Added value: +[
+  {
+    "description": "Positive integer form (e.g. 90).",
+    "exclusiveMinimum": 0,
+    "maximum": 9007199254740991,
+    "type": "integer"
+  },
+  {
+    "description": "String form — the law number (\"90\") or the full citation (\"118-90\").",
+    "pattern": "^(?:\\d+-)?0*[1-9]\\d*$",
+    "type": "string"
+  }
+]

changedInput schema / properties / lawNumber / description

Previous value: -"Law number. Required for 'get'."New value: +"Law number, as carried by a 'list' row's `laws[].number` — either the full citation ('118-90', rendered as 'Public Law 118-90') or the portion after the hyphen ('90'); the prefix is the congress and must match `congress`. Not the row's own `number`, which is the origin bill. Required for 'get'."

removedInput schema / properties / lawNumber / exclusiveMinimum
```
Removed value: -0
```
removedInput schema / properties / lawNumber / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / lawNumber / type
```
Removed value: -"integer"
```

1 tool updateJun 5, 2026

Changedcongressgov_committee_lookup2 fields changed

changedInput schema / properties / committeeCode / description

Previous value: -"Committee system code (e.g., 'hsju00'). Required for get and sub-resources."New value: +"Committee system code, e.g. 'hsju00'. Required for 'get' and sub-resources. Codes are lowercase letters + 2-digit suffix. Pass a committee name here and the tool will attempt to resolve it automatically — or use operation:'list' with filter to browse."

addedInput schema / properties / committeeCode / pattern
```
Added value: +"^([a-z]{2,6}\\d{2}|.*\\s.*)$"
```

2 tool updatesJun 2, 2026

Changedcongressgov_committee_lookup1 field changed

addedInput schema / properties / filter

Added value: +{
+  "description": "Filter committee list results by name (e.g., 'transportation', 'armed services'). Only meaningful for 'list'. Fetches the full chamber set and matches client-side; fuzzy-matched rows are labeled approximate.",
+  "type": "string"
+}

Changedcongressgov_roll_votes2 fields changed

addedInput schema / properties / chamber

Added value: +{
+  "default": "house",
+  "description": "Chamber whose votes to query. 'house' (default) draws from the Congress.gov API; 'senate' draws from the Senate's official LIS roll-call feed. Roll call numbers reset each session and are specific to one chamber.",
+  "enum": [
+    "house",
+    "senate"
+  ],
+  "type": "string"
+}

changedInput schema / properties / order / description

Previous value: -"Sort order for 'list', by vote update date. 'recent' (default) returns newest first; 'oldest' returns ascending. With 'recent', offset=0 always returns the strictly newest page. Ignored by 'get' and 'members'."New value: +"Sort order for 'list'. 'recent' (default) returns newest first; 'oldest' returns ascending. House sorts by vote update date (with 'recent', offset=0 always returns the strictly newest page); Senate sorts by roll call number. Ignored by 'get' and 'members'."

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