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bill-commons

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mcp.billcommons.org

Search 209k+ US state bills, all 50 states + DC: full text, sponsors, votes, status. Free.

https://mcp.billcommons.org/mcpWebsiteNo authMCP 2025-11-25v1.28.1last checked 18 Oct 2026spoke MCP on 100% of 88 checks (30 days)initialize in 196 ms

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✓Claude CodeConnects

The endpoint answers an anonymous handshake, so no credential is needed.

claude mcp add --transport http bill-commons https://mcp.billcommons.org/mcp

Claude Code docs · read on 2026-08-30

✓Claude (claude.ai & Desktop)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Connectors → Add custom connector, then paste https://mcp.billcommons.org/mcp.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✓ChatGPTConnects

The endpoint answers an anonymous handshake, so no credential is needed.

Settings → Apps → Advanced settings → Developer mode, then create a connector pointing at https://mcp.billcommons.org/mcp.

ChatGPT docs · read on 2026-08-30

✓CursorConnects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "mcpServers": {
    "bill-commons": {
      "url": "https://mcp.billcommons.org/mcp"
    }
  }
}

Cursor docs · read on 2026-08-30

✓VS Code (Copilot)Connects

The endpoint answers an anonymous handshake, so no credential is needed.

{
  "servers": {
    "bill-commons": {
      "type": "http",
      "url": "https://mcp.billcommons.org/mcp"
    }
  }
}

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 18 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme	No auth
Protected-resource metadata	✕Not found Without it a client has to guess where the authorization server lives.
Anonymous access	Handshake succeeds; 10 tools listable

What the probe found

No CORS headers for browser-based clients

A cross-origin preflight came back without Access-Control-Allow-Origin, so the endpoint is reachable from native clients only — code running in a web page is stopped by the browser before a request is ever sent.

Tools

build_legislative_evidence_packetcompare_bill_versionsfind_similar_billsget_active_sessionsget_bill_recordget_jurisdiction_coverageget_vote_detailslist_topicssearch_legislationtrace_legislative_history

Contract history

8 Oct 2026v1.28.11 breaking1 compatible10 cosmeticinstructions rewritten

Breaking: get_upcoming_hearings

Instructions rewritten: get_bill_record, get_jurisdiction_coverage. The description an agent follows changed; the callable contract may not have.

8 Oct 2026v1.28.11 breaking1 compatible10 cosmeticinstructions rewritten

Breaking: ui://billcommons/bill-evidence-v1.html

Instructions rewritten: get_bill_record, get_jurisdiction_coverage. The description an agent follows changed; the callable contract may not have.

4 Oct 2026v1.28.11 cosmeticinstructions rewritten

Instructions rewritten: get_jurisdiction_coverage. The description an agent follows changed; the callable contract may not have.

2 Oct 2026v1.28.11 compatible1 cosmetic

2 Oct 2026v1.28.11 breaking

Breaking: get_upcoming_hearings

2 Oct 2026v1.28.111 cosmetic

27 Sep 2026v1.28.11 cosmeticinstructions rewritten

Instructions rewritten: get_bill_record. The description an agent follows changed; the callable contract may not have.

2 Sep 2026v1.28.1first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/bill-commons/badge.svg)](https://mcpi.app/servers/bill-commons)