Us Eli MCP server

us-eli-mcp

<!-- mcp-name: io.github.matematicsolutions/us-eli-mcp -->

MCP server for US law with verifiable citations. Five sources behind ten read-only tools:

through committees and floor votes.

• Congress.gov API - the federal legislative process: bills as they move

at Large, CFR annual editions, Federal Register issues.

• GovInfo API - enacted law text as published packages: US Code, Statutes

(1994-2026, live-verified 2026-07-07), including 8,513 presidential documents (1,550 executive orders). Keyless.

• Federal Register API - full-text search over 1,003,504 FR documents

opinions (live-verified 2026-07-07). The headline value is STATE case law (California, New York, Texas, ...), which no federal source covers. Keyless, ~5 requests/min anonymous.

• CourtListener search API - full-text search over 8,294,123 court

full-text search over 412,846 sections plus per-section amendment history. Keyless.

• eCFR API - the CURRENT Code of Federal Regulations: section-level

What this is not

a free-tier aggregator (30,000 queries/month) not wrapped here.

• State legislation (all 50 states) - see LegiScan,

mature MIT-licensed wrappers (blakeox/courtlistener-mcp, john-walkoe/courtlistenercitationsmcp) remain the recommendation; the case-law tools here exist primarily for state courts. See SOURCES.md.

• A federal case-law workhorse - for heavy federal case-law research the

Tools

Every response carries lexuri (a resolvable API URL), humanreadablecitation (the official convention: "H.R. 1, 118th Congress", "91 FR 41591", "People v. Miranda-Guerrero, 519 P.3d 1004 (California Supreme Court 2022)", "15 CFR § 744.3") and sourceurl (the public page). Reporter citations are taken verbatim from the source and never fabricated; when none exists the docket number is used instead.

Install

pip install us-eli-mcp

Windows 11 with Smart App Control

Smart App Control blocks unsigned executables, which covers uvx.exe, pip.exe and the us-eli-mcp.exe launcher that pip writes at install time. The python.exe and py.exe from the python.org installer are signed by the Python Software Foundation, so running the module through the interpreter works:

python -m pip install us-eli-mcp
python -m us_eli_mcp

pip.exe is blocked for the same reason, so install with python -m pip, not pip install. If python is not on PATH, use the Windows launcher: py -3 -m uselimcp.

{ "mcpServers": { "us-eli-mcp": { "command": "python", "args": ["-m", "us_eli_mcp"] } } }

Do not turn Smart App Control off to work around this - it cannot be re-enabled without reinstalling Windows.

Configuration

Shortened. The full README is on GitHub.