us-eli-mcp
MCP server for the Congress.gov API that tracks US federal legislative process, providing tools to search bills and get bill details.
README
us-eli-mcp
<!-- mcp-name: io.github.matematicsolutions/us-eli-mcp -->
MCP server for the Congress.gov API. Tracks the US federal legislative process - bills as they move through committees and floor votes.
What this is not
This connector does not cover:
- Enacted law text - the US Code and Statutes at Large live at GovInfo
(
api.govinfo.gov), a separate API with its own package/granule identifier scheme. Not implemented here yet. - State legislation (all 50 states) - see LegiScan, a free-tier aggregator (30,000 queries/month) not wrapped here yet.
- Case law - CourtListener already has mature, permissively-licensed MCP wrappers (blakeox/courtlistener-mcp, MIT). Building a third one would be redundant; see DISCOVERY.md.
Tools
| Tool | Purpose |
|---|---|
us_search_bills |
List bills by congress (e.g. 118) and type (hr, s, hres, ...) |
us_get_bill |
Full detail + latest action for one bill |
Every response carries lex_uri (the Congress.gov API URL for the bill),
human_readable_citation (e.g. "H.R. 1, 118th Congress") and source_url
(the public congress.gov page).
Install
pip install us-eli-mcp
Configuration
| Env var | Default |
|---|---|
US_ELI_API_KEY |
DEMO_KEY (shared, low rate limit - get your own free key at api.congress.gov/sign-up) |
US_ELI_CACHE_DIR |
~/.matematic/cache/us-eli |
US_ELI_AUDIT_DIR |
~/.matematic/audit |
US_ELI_BASE_URL |
https://api.congress.gov/v3 |
License
Apache-2.0 (code). Congress.gov data is US government work (public domain).
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