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fbi-crime-mcp-server MCP Server

FBI Crime Data Explorer — UCR estimates, NIBRS breakdowns, hate crimes, arrests, and agency data.

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled fbi-crime-mcp-server yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

Connect

Published as @cyanheads/fbi-crime-mcp-server on npm. Runs locally.

Known issues

8 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 5.

Most discussed

bug(instructions): server instructions direct agents to use decommissioned tools

Server version

0.1.2

mcp-ts-core version

^0.9.9

Runtime

Bun

Runtime version

1.3.11

Transport

All transports

Description

The instructions field passed to createApp() in src/index.ts (lines 47–52) tells agents to call four tools that are decommissioned and return ServiceUnavailable errors on every call:

instructions:
  'FBI Crime Data Explorer MCP server. Provides access to UCR crime estimates, NIBRS incident breakdowns, agency offense counts, hate

[Read the thread](https://github.com/cyanheads/fbi-crime-mcp-server/issues/4) · 2026-05-26 · closed · 1 comment

### bug(fbi_get_leoka): deaths_by_region schema mismatch causes SerializationError on every call

### Server version

0.1.2

### mcp-ts-core version

^0.9.9

### Runtime

Bun

### Runtime version

1.3.11

### Transport

Streamable HTTP

### Description

`fbi_get_leoka` fails with a Zod `SerializationError` on every call (both `ytd` and `monthly` periods). The output schema declares `deaths_by_region` as `z.record(z.string(), z.number())`, but the live `/cde/leoka/ytd` and `/cde/leoka/monthly` APIs return it nested by killing type:

```json
{
  "officer_death_by_geographic_region": {
    "Fel

[Read the thread](https://github.com/cyanheads/fbi-crime-mcp-server/issues/3) · 2026-05-26 · closed · 1 comment

### bug(fbi_get_leoka): wrong CDE path prefix and data mapping mismatch for LEOKA endpoints

### Server version

0.1.0

### mcp-ts-core version

0.9.9

### Runtime

Node.js

### Runtime version

Node.js v25.9.0

### Transport

HTTP (Streamable HTTP)

### Description

`fbi_get_leoka` has two independent bugs:

**Bug 1 — wrong URL prefix.** The service calls `https://api.usa.gov/crime/fbi/cde/LATEST/leoka/ytd` and `https://api.usa.gov/crime/fbi/cde/LATEST/leoka/monthly`. Both return HTTP 404. The working paths are `https://api.usa.gov/crime/fbi/cde/leoka/ytd` and `https://api.usa.gov/crim

[Read the thread](https://github.com/cyanheads/fbi-crime-mcp-server/issues/2) · 2026-05-26 · closed · 1 comment

### bug(fbi-api): UCR base URL backend decommissioned — 10 of 12 tools return HTTP 404

### Server version

0.1.0

### mcp-ts-core version

0.9.9

### Runtime

Node.js

### Runtime version

Node.js v25.9.0

### Transport

HTTP (Streamable HTTP)

### Description

The UCR legacy base URL (`https://api.usa.gov/crime/fbi/ucr`) returns HTTP 404 on all paths, not just specific endpoints. The error body is:

404 Not Found: Requested route ('crime-data-api.fr.cloud.gov') does not exist.


This indicates the Cloud Foundry backend (`crime-data-api.fr.cloud.gov`) that api.usa.gov used 

[Read the thread](https://github.com/cyanheads/fbi-crime-mcp-server/issues/1) · 2026-05-26 · closed · 1 comment

### feat(config): default MCP_SESSION_MODE to stateless across env, Docker, and src

`Dockerfile` sets `ENV MCP_SESSION_MODE="stateless"`, but `.env.example` carries a commented `# MCP_SESSION_MODE=stateful`, whose comment documents the value set as `stateful | stateless (default: stateful)`. The container and the same code run via `bunx`, `npm start`, or from source therefore resolve to different session modes — stateless in Docker, stateful everywhere else, since the framework schema defaults to `auto` and `auto` resolves to `stateful`.

Related: cyanheads/mcp-ts-core#376

## 

[Read the thread](https://github.com/cyanheads/fbi-crime-mcp-server/issues/9) · 2026-08-22 · open · 0 comments

[See all 8 reports Pod holds for fbi-crime-mcp-server](/mcp/fbi-crime-mcp-server/issues).

## Firsthand observations

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