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DFX Intelligence

by io.github.Capital-W-Holdings
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What DFX actually covers, and what it does not

dfx_coverage
Read-onlyIdempotent

Measured coverage, served sources, object types and the known gaps stated plainly, including where geography is a single state and where nothing carries a calibrated probability. It separates an empty result from an absent market. With NO arguments: the full grid, every event family, every state, measured. With state and/or event_type: a direct verdict on that one slice (COVERED, NOT_COVERED or UNKNOWN) with the basis it was decided on, which is one small answer instead of a grid to parse. Free, and it queries no data: the verdict comes from a coverage registry, so a NOT_COVERED is measured rather than inferred from an empty search.

Input Schema

NameRequiredDescriptionDefault
stateNoTwo letter state code. Optional: narrows the answer to this state.
event_typeNoOptional: narrows the answer to this served event family.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEED_RECORDED",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_ASSIGNED",
-  "LOAN_MATURED",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "LOAN_STATUS_CHANGED",
-  "OWNERSHIP_CHANGED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED",
-  "ZONING_EVENT"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEED_RECORDED",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "DISTRESS_STATUS_CHANGED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_ASSIGNED",
+  "LOAN_MATURED",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "OWNERSHIP_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SPECIAL_SERVICING_ENTERED",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED",
+  "ZONING_EVENT"
+]
  2. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEED_RECORDED",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_MATURED",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "LOAN_STATUS_CHANGED",
-  "OWNERSHIP_CHANGED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED",
-  "ZONING_EVENT"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEED_RECORDED",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_ASSIGNED",
+  "LOAN_MATURED",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "OWNERSHIP_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED",
+  "ZONING_EVENT"
+]
  3. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEED_RECORDED",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "LOAN_STATUS_CHANGED",
-  "OWNERSHIP_CHANGED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED",
-  "ZONING_EVENT"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEED_RECORDED",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_MATURED",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "OWNERSHIP_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED",
+  "ZONING_EVENT"
+]
  4. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "LOAN_STATUS_CHANGED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED",
-  "ZONING_EVENT"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEED_RECORDED",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "OWNERSHIP_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED",
+  "ZONING_EVENT"
+]
  5. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "LOAN_STATUS_CHANGED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED",
+  "ZONING_EVENT"
+]
  6. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "FORECLOSURE_FILED",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "TAX_LIEN_LISTED",
-  "USE_CONVERSION_PERMITTED",
-  "VACANT_FORECLOSURE_REGISTERED"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "LOAN_STATUS_CHANGED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED"
+]
  7. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PORTFOLIO_CONTRACTED",
-  "PORTFOLIO_EXPANDED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "USE_CONVERSION_PERMITTED"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "FORECLOSURE_FILED",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "TAX_LIEN_LISTED",
+  "USE_CONVERSION_PERMITTED",
+  "VACANT_FORECLOSURE_REGISTERED"
+]
  8. Changed1 schema field changed
    • changedInput schema / properties / event_type / description
      Previous value: -"Optional: narrows the answer to this family. Same vocabulary as search_property_events."New value: +"Optional: narrows the answer to this served event family."
  9. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "LEASE_EXPIRING",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "USE_CONVERSION_PERMITTED"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PORTFOLIO_CONTRACTED",
+  "PORTFOLIO_EXPANDED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "USE_CONVERSION_PERMITTED"
+]
  10. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
-  "BANKRUPTCY_EVENT",
-  "CERTIFICATE_OF_OCCUPANCY",
-  "COMPANY_CONTRACTED",
-  "COMPLIANCE_PERIOD_ENDING",
-  "DEMOLITION_FILED",
-  "DISTRESS_FLAG_RAISED",
-  "FORECLOSURE_EVENT",
-  "LEASE_EXPIRING",
-  "LEASE_TERM_REVISED",
-  "LOAN_MATURITY_SCHEDULED",
-  "LOAN_MODIFIED",
-  "PERMIT_ISSUED",
-  "PERMIT_STATUS_CHANGED",
-  "PROPERTY_SOLD",
-  "SUBSIDY_CONTRACT_EXPIRING",
-  "USE_CONVERSION_PERMITTED"
-]New value: +[
+  "BANKRUPTCY_EVENT",
+  "CERTIFICATE_OF_OCCUPANCY",
+  "COMPLIANCE_PERIOD_ENDING",
+  "DEMOLITION_FILED",
+  "DISTRESS_FLAG_RAISED",
+  "FORECLOSURE_EVENT",
+  "LEASE_EXPIRING",
+  "LOAN_MATURITY_SCHEDULED",
+  "LOAN_MODIFIED",
+  "PERMIT_ISSUED",
+  "PERMIT_STATUS_CHANGED",
+  "PROPERTY_SOLD",
+  "SUBSIDY_CONTRACT_EXPIRING",
+  "USE_CONVERSION_PERMITTED"
+]
  11. Changed2 schema fields changed
    • addedInput schema / properties / event_type
      Added value: +{
+  "description": "Optional: narrows the answer to this family. Same vocabulary as search_property_events.",
+  "enum": [
+    "BANKRUPTCY_EVENT",
+    "CERTIFICATE_OF_OCCUPANCY",
+    "COMPANY_CONTRACTED",
+    "COMPLIANCE_PERIOD_ENDING",
+    "DEMOLITION_FILED",
+    "DISTRESS_FLAG_RAISED",
+    "FORECLOSURE_EVENT",
+    "LEASE_EXPIRING",
+    "LEASE_TERM_REVISED",
+    "LOAN_MATURITY_SCHEDULED",
+    "LOAN_MODIFIED",
+    "PERMIT_ISSUED",
+    "PERMIT_STATUS_CHANGED",
+    "PROPERTY_SOLD",
+    "SUBSIDY_CONTRACT_EXPIRING",
+    "USE_CONVERSION_PERMITTED"
+  ],
+  "type": "string"
+}
    • addedInput schema / properties / state
      Added value: +{
+  "description": "Two letter state code. Optional: narrows the answer to this state.",
+  "type": "string"
+}
  12. First observed

TDQS

A4.3/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), and the description adds genuinely new behavioral facts: no data is queried, the verdict comes from a registry so NOT_COVERED is measured rather than inferred from an empty search, and it distinguishes an empty result from an absent market. That last point is the key semantic trap an agent would otherwise fall into and it is disclosed explicitly.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The mode split is front-loaded and each mode gets its own tight sentence, with no wasted clauses. The opening sentence is somewhat dense and rhetorical ('stated plainly', 'It separates an empty result from an absent market') where a crisper enumeration would read faster, but nothing is superfluous.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema, the description carries the return-value burden and does so: it describes the full grid shape and the single-slice verdict plus the basis it was decided on. Optional parameters are explained, and the closed-world/registry source is stated, so an agent has everything needed to call and interpret it.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3, but the description adds meaning the schema cannot express: it defines the no-argument default (full grid) and the exact verdict vocabulary (COVERED, NOT_COVERED, UNKNOWN) returned when the optional filters are supplied. That is real value beyond the enum and string descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific resource (a coverage registry) and exactly what it returns: measured coverage, served sources, object types, and known gaps, either as a full grid or a per-slice verdict. The two operating modes are unambiguous. It stops short of naming siblings like what_can_dfx_answer or get_company_coverage, so an agent must infer the boundary with those tools itself.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It clearly specifies the two invocation patterns: no arguments for the full grid, state/event_type for a single-slice verdict, and notes the tradeoff (one small answer versus a grid to parse). It also tells the agent this is free and queries no data, which is a useful gating condition. However, it never explains when to prefer this over the near-sibling what_can_dfx_answer or get_company_coverage.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All DFX Intelligence toolsInspect
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