Fjc Judges
NPM · @PIPEWORX/MCP-FJC-JUDGES · 2 COMPONENTS
FJC Judges — the Federal Judicial Center's Biographical Directory of Article III federal judges…
Available components
Last scanned (5 hours ago)
Scores higher than 76% of npm servers
Category Education and Research
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. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- No production dependencies, so there is no dependency health to assess. View diagnostics → Pass
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-fjc-judges). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 3 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability67
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +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.
- 3 Nov 26 +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.
- 1 Nov 26 +2
- 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. security
- Capabilities: pass → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Security disclosure: fail → unverified ▼ functional
- Stability: unverified → 0.10 ▲ functional
- First check of Schema quality: unverified functional
- Package version: 0.2.0 → 0.2.1 functional
- 30 Oct 26 0
- Security disclosure: unverified → fail ▼ functional
- 29 Oct 26 79
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/@pipeworx/mcp-fjc-judges@0.2.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | pipeworx-io/mcp-fjc-judges |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/pipeworx-io/mcp-fjc-judges/.github/workflows/publish.yml@refs/heads/main |
| Rekor log index | 3635943838 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:30bda67d743bdd043879aa796838f661af6bb8f97e2dd3f479694ff31429c52750bf880c66affcc22c16920d2156e9e83bd1f07091ad4426ea8d98a81 |
Background: How many MCP packages publish verified provenance →
Dependencies 0 packages
| Packages resolved | 0 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
fjc_judge_lookup ~185
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".
| Name | Type | Req | Description |
|---|---|---|---|
| limit | number | – | Max matches returned in full (default 5, max 25). |
| name | string | yes | Judge name, full or partial, e.g. "Ketanji Brown Jackson", "Sotomayor", "Learned Hand". |
No output schema declared.
No examples provided.
fjc_judges_by_court ~212
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".
| Name | Type | Req | Description |
|---|---|---|---|
| court | string | yes | 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. |
No output schema declared.
No examples provided.
fjc_judges_by_president ~166
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".
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | President name or surname, e.g. "Joseph R. Biden", "Biden", "Obama", "George W. Bush". |
No output schema declared.
No examples provided.
fjc_seat_succession ~215
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".
| Name | Type | Req | Description |
|---|---|---|---|
| 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. |
No output schema declared.
No examples provided.
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.
npm · @pipeworx/mcp-fjc-judges
claude mcp add pipeworx-io-fjc-judges -- npx -y @pipeworx/mcp-fjc-judges
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.