OpenUSPublicDataMCP
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| OPENUS_PORT | No | Port for HTTP transport | 8787 |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
| logging | {} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| extensions | {
"io.modelcontextprotocol/ui": {}
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| health_checkA | Return server health and the count of registered public-data sources. |
| list_public_data_sourcesA | List registered US public-data sources with jurisdiction and authentication metadata. |
| find_us_data_sourcesC | Find registered sources by jurisdiction or platform, such as federal, socrata or ckan. |
| resolve_us_geographyA | Resolve a US state name, abbreviation, or city/state string to state FIPS metadata. |
| list_curated_state_portalsC | List the first curated state open-data portal pack. |
| search_state_dataC | Search the curated official open-data portal for a supported US state. |
| search_data_govC | Search Data.gov's official catalogue for datasets matching a query. |
| get_census_state_populationA | Return Census ACS 5-year total population by US state for a supported year. |
| list_federal_agenciesA | Return federal agencies known to USAspending.gov without requiring an API key. |
| search_federal_registerC | Search official Federal Register documents by full-text term. |
| search_usaspending_awardsC | Search federal spending awards by keyword through USAspending.gov. |
| search_congress_billsC | Search recent Congress.gov bill records; requires CONGRESS_API_KEY. |
| search_socrata_catalogC | Discover state and local datasets hosted on Socrata. |
| query_socrata_datasetC | Read rows from a Socrata dataset using its domain and four-character dataset ID. |
| query_arcgis_feature_serviceC | Query an ArcGIS REST feature service layer. |
| search_ckan_catalogC | Search a CKAN catalogue hosted by a state, county, city or public institution. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 16 tools
Most tools have distinct targets (Socrata, CKAN, ArcGIS, etc.), but `find_us_data_sources` and `list_public_data_sources` could be confused as both deal with listing sources. Descriptions help differentiate, but slight overlap exists.
Tools consistently use snake_case with a verb_noun pattern (e.g., query_socrata_dataset). Minor deviation: `health_check` is not verb_noun but still clear. Overall pattern is predictable.
16 tools cover a broad range of US public data sources (federal, state, local) without being overwhelming. Each tool serves a distinct purpose in data discovery and querying.
Tools cover major platforms (Socrata, CKAN, ArcGIS, Data.gov) and federal data sources. Missing a dedicated CKAN dataset query tool (only search exists), but overall coverage is strong for a read-only discovery server.