Fjc Judges MCP server

@pipeworx/fjc-judges

Biographies and appointment records of every US federal (Article III) judge since 1789 — Supreme Court justices, court of appeals and district court judges — from the Federal Judicial Center's Biographical Directory.

Part of Pipeworx — an MCP gateway connecting AI agents to 1800+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.

Tools

title, appointing president and party, ABA rating, nomination / hearing / confirmation / commission dates, Senate vote, chief-judge and senior-status dates and how service ended; plus birth, death, education and career. Answers "who appointed Judge X", "when was X confirmed", "is X still serving".

• fjcjudgelookup(name) — one judge's full record: every appointment with court,

Circuit", "Southern District of New York", "Supreme Court"). status is active (default — active service only), serving (active or senior) or all.

• fjcjudgesby_court(court, status?) — judges of one court (e.g. "Ninth

appointment a president made, with totals by court level. Joseph R. Biden: 235 appointments of 230 distinct judges (one judge can be appointed twice, e.g. Ketanji Brown Jackson to the D.C. Circuit and then the Supreme Court).

• fjcjudgesbypresident(president, courttype?) — every Article III

Every response carries source, licence and dataasof (when the FJC last regenerated the directory).

Auth

Keyless.

Data sources

1789–present. Public domain (a work of the US federal government).

• Federal Judicial Center, Biographical Directory of Article III Federal Judges,

The FJC publishes the directory as a single export (~5 MB, ~4,000 judges, regenerated daily), not as a query API. The pack reads it per isolate and keeps the parsed rows for up to six hours, so the first call on a cold isolate takes about a second and the rest take milliseconds.

Things the next person would otherwise rediscover:

columns (Court Name (1) … (6)). A judge elevated from district court to a circuit has two appointments; counts "by president" are appointments, and the response reports distinct judges alongside.

• One row per judge, with up to six appointments flattened into numbered

appointment. Senior judges still hear cases; use status: "serving" to include them.

• Empty cells are frequently a single space, not empty — trim before testing.
• "Active" means no termination date and no senior-status date on that

R. Biden"). A surname that matches two presidents returns ambiguous_president with both candidates rather than merging them.

• Presidents are written as the FJC writes them ("George H.W. Bush", "Joseph

not in this directory.

• Magistrate, bankruptcy and state judges are not Article III judges and are

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "fjc-judges": {
      "url": "https://gateway.pipeworx.io/fjc-judges/mcp"
    }
  }
}

What this endpoint actually serves

tools/list at https://gateway.pipeworx.io/fjc-judges/mcp returns the tools in the table above plus the shared Pipeworx meta-tools — askpipeworx, discovertools, search_within, remember/recall and the rest of the gateway-wide set. So the tool count you see is larger than this table: a single-pack endpoint currently lists roughly 30 shared tools alongside the pack's own. The connection's initialize response states its exact scope, and is the authoritative answer for a given day.

Shortened. The full README is on GitHub.