# Fjc Judges (npm · @pipeworx/mcp-fjc-judges)

FJC Judges — the Federal Judicial Center's Biographical Directory of Article III federal judges…

- Trust score: 83/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 77/100, [markdown](https://verifymcp.io/servers/pipeworx-io-fjc-judges/fjc-judges-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-fjc-judges/fjc-judges-mcp)
- npm · `@pipeworx/mcp-fjc-judges`: 83/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges.md), [page](https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-fjc-judges`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-fjc-judges).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 3 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 836 tokens (~209/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Fjc Judges MCP server?

Fjc Judges runs locally as an npm package, launched with npx -y @pipeworx/mcp-fjc-judges. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add pipeworx-io-fjc-judges -- npx -y @pipeworx/mcp-fjc-judges
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-fjc-judges": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-fjc-judges"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-fjc-judges": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-fjc-judges"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-fjc-judges -- npx -y @pipeworx/mcp-fjc-judges
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-fjc-judges": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-fjc-judges"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-fjc-judges --command npx --arg -y --arg @pipeworx/mcp-fjc-judges
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-fjc-judges:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-fjc-judges"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-fjc-judges": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-fjc-judges"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-fjc-judges -t stdio -c npx -a -y @pipeworx/mcp-fjc-judges
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-fjc-judges": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-fjc-judges"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 81, +2)

- [security regression] Tool safety: pass → unverified
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Stability: unverified → 0.10
- [functional] First check of Schema quality: unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-30 (score 79, 0)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-29 (score 79)

First indexed and scored.

## MCP tools (4)

### `fjc_judge_lookup` (~185 tokens)

Look up a US federal (Article III) judge by name in the Federal Judicial Center biographical directory — every Supreme Court justice, court of appeals and district court judge since 1789. Returns each appointment: court, title, appointing president and party, ABA rating, nomination, hearing, confirmation and commission dates, Senate vote, chief-judge and senior-status dates, and when and how service ended; plus birth, death, education and professional career. Answers "who appointed Judge X", "when was X confirmed", "is X still serving", "where did X go to law school".

Input parameters:

- `limit` (number): Max matches returned in full (default 5, max 25).
- `name` (string, required): Judge name, full or partial, e.g. "Ketanji Brown Jackson", "Sotomayor", "Learned Hand".

### `fjc_judges_by_court` (~212 tokens)

List US federal judges who sat on a given federal court — e.g. the Supreme Court, the Ninth Circuit, the Southern District of New York — from the Federal Judicial Center directory. Filter to judges currently in active service, currently serving (active or senior status), or everyone since the court was created. Returns name, title, appointing president and party, commission date and service status per judge. Answers "who are the active judges on the Fifth Circuit", "how many judges has SDNY had".

Input parameters:

- `court` (string, required): Court name or fragment, e.g. "Supreme Court", "Ninth Circuit", "Southern District of New York", "District of Columbia Circuit".
- `limit` (number): Max judges returned (default 50, max 200). Total is always reported.
- `status` (string): "active" = active service only (default); "serving" = active or senior status; "all" = every judge ever on the court.

### `fjc_judges_by_president` (~166 tokens)

List the Article III federal judges appointed by a US president, from the Federal Judicial Center directory, with counts by court level (Supreme Court, courts of appeals, district courts). Returns each appointee's name, court, commission date and current service status. Answers "how many judges did Biden appoint", "which Supreme Court justices did Reagan appoint", "Trump appellate appointees".

Input parameters:

- `court_type` (string): Optional: restrict to one court level.
- `limit` (number): Max appointments listed (default 50, max 200). Totals cover all of them.
- `president` (string, required): President name or surname, e.g. "Joseph R. Biden", "Biden", "Obama", "George W. Bush".

### `fjc_seat_succession` (~215 tokens)

Trace who held a US federal judgeship (Article III seat) before and after a judge, from the Federal Judicial Center biographical directory. Give a judge name (or an FJC Seat ID) and get the whole chain of holders of that seat in order, each with appointing president, commission date and how service ended, plus the named predecessor and successor of the judge asked about. Answers "who did Judge X replace", "who succeeded Justice Y", "who has held this seat".

Input parameters:

- `court` (string): Optional court fragment selecting which of a judge's appointments to trace, e.g. "District of Columbia Circuit".
- `name` (string): Judge name, full or partial, e.g. "John G. Roberts", "Millett". Add court if the surname is common.
- `seat_id` (string): FJC Seat ID of any holder of the seat, e.g. "CADC0607" (returned by fjc_judge_lookup). Alternative to name.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges#diagnostics

## Score history

- 2026-11-05: 83
- 2026-11-04: 82
- 2026-11-03: 82
- 2026-11-02: 81
- 2026-11-01: 81
- 2026-10-31: 79
- 2026-10-30: 79
- 2026-10-29: 79

## Common questions

### What is the Fjc Judges MCP server?

Fjc Judges is an MCP server listed in the public MCP registry as io.github.pipeworx-io/fjc-judges. FJC Judges, the Federal Judicial Center's Biographical Directory of Article III federal judges… This page covers its npm package (@pipeworx/mcp-fjc-judges).

### Is the Fjc Judges MCP server safe to use?

Fjc Judges scores 83 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Fjc Judges MCP server expose?

Fjc Judges exposes 4 tools: fjc_judge_lookup, fjc_judges_by_court, fjc_judges_by_president, fjc_seat_succession. Their descriptions and schemas cost roughly 778 tokens of context every time the server is loaded.

### Is the Fjc Judges MCP server still maintained?

Fjc Judges is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Fjc Judges MCP server under?

Fjc Judges declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-fjc-judges
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-fjc-judges
- Repository: https://github.com/pipeworx-io/mcp-fjc-judges
- Website: https://pipeworx.io/packs/fjc-judges
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-fjc-judges/pipeworx-mcp-fjc-judges