Live CourtListener, RECAP, the US Code, the eCFR and the Federal Register — read straight from the source.

Legal answers, cited.
103 CaseTrail tools behind one URL.
Frontier models: 100% correct with Pipeworx, 63% with web search

What a court actually held, what is on a docket, what a statute or regulation says today, and what is about to change. Your agent reads the opinions and the filings themselves, so an answer carries the record it came from rather than what a model happened to memorise — which is the difference between a citation you can check and one that does not exist.

One connection · no per-source API keys · free to start

See it answer one

“What did the Supreme Court hold in Miranda v. Arizona?” · “What is the text of 15 U.S.C. 78j?” · “What bills has Congress introduced about artificial intelligence?”

Live, from the primary source, with the citation attached — one of 188 worked examples. No signup.

Pick a question →

Connect it to your AI

Claude, ChatGPT, Cursor, Gemini and more. One URL scoped to CaseTrail — your agent sees these 103 tools, not all 1,544 sources at once. Free, no API keys.

Install →
← All verticals

Included Packs

⚖️
Case law

CourtListener for US opinions — the busiest pack in the catalog by call volume — plus Oyez for SCOTUS summaries and argument audio, and UK case law for the English body.

📁
Dockets & filings

RECAP for the documents themselves, and federal civil, criminal, appeals and bankruptcy dockets — what is actually being filed, and by whom.

📜
Statutes & regulations

The US Code for statute text and the eCFR for regulations, with the SEC, tax and banking slices people actually cite.

🔔
What is changing

Federal Register notices, the Regulations.gov comment record, and bills in Congress and the state legislatures via LegiScan.

🌍
EU & UK law

EUR-Lex and legislation.gov.uk — the two foreign bodies US practitioners are asked about most.

🗃️
Congressional documents

Committee prints, reports and hearing documents — the record behind a statute, not just its text.

Setup

1
Sign up for Pipeworx

Create a free account at /signup and grab your API key from /account.

2
Connect to Claude

Choose one of these options:

Option A — Claude on the web

Open claude.ai/customize/connectors, click Add custom connector, name it Pipeworx Legal and paste this URL. Leave the OAuth client ID and secret blank — the connector registers itself.

connector URL 
https://gateway.pipeworx.io/mcp?vertical=legal

Then click Connect and sign in with GitHub. That step is free and takes you from 50 calls a day to 200 — same connection either way, and you can skip it and sign in later. In a new chat, open the tools menu and enable the connector.

Custom connectors need a paid Claude plan — that is an Anthropic gate, not a Pipeworx one.

Option B — Persistent MCP config

Add this to your claude_desktop_config.json:

claude_desktop_config.json 
{
  "mcpServers": {
    "pipeworx-legal": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://gateway.pipeworx.io/mcp?vertical=legal",
        "--header",
        "Authorization:Bearer YOUR_API_KEY"
      ]
    }
  }
}
Option C — Session only

Paste this into Claude to use for one conversation:

prompt 
Use this MCP server for this conversation:

npx -y mcp-remote "https://gateway.pipeworx.io/mcp?vertical=legal" --header "Authorization:Bearer YOUR_API_KEY"

Then tell me what the Supreme Court held in Miranda v. Arizona, and quote the passage it comes from.
3
No API keys needed

Every source in this vertical is a free public one. PACER and Docket Alarm are deliberately not included — they need your own credentials, and PACER bills per page.

Tools

Connect with ?vertical=legal to get the whole set, or browse the full pack catalog for any individual source. Anything left out of this bundle is still reachable through ask_pipeworx on any connection — the vertical narrows what is listed, never what is available.