What tools does the failmodes MCP server provide?

failmodes exposes 4 tools: get_failure_mode, list_categories, list_modes, search_failure_modes. This list was returned by the running server when we connected to it.

Does failmodes require an API key?

No. failmodes answered a tools/list request without credentials.

How do I install failmodes?

Run: claude mcp add --transport http failmodes https://www.failmodes.com/api/mcp. One-click install links for Cursor and VS Code are also available on the server's page.

Connection check verified live · 27h ago

failmodes

MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes

Web search & scraping Memory & knowledge

Install

Remote (HTTP)

claude mcp add --transport http failmodes https://www.failmodes.com/api/mcp

Tools 4

GitHub stars —

Installs / wk —

Licence —

Transport streamable-http, stdio

Last checked 27h ago

Tools & capabilities

4 tools

Read from the running server on 27h ago.

get_failure_mode id*

Retrieve the full structured record for a single failure mode by its ID slug (e.g. 'citation-hallucination', 'sycophancy').

list_categories

List all taxonomy categories with their IDs, names, descriptions, and mode counts.

list_modes category

List failure modes, optionally filtered to a single category by category ID.

search_failure_modes symptom*

Search the Fail Modes taxonomy by symptom text or keyword phrase. Returns ranked matches with id, name, category, and matched context.

Context cost

Light

Connecting this server adds 4 tool definitions to every request — roughly 360 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

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Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Repository: elyngved/failmodes-mcp
npm: failmodes-mcp
Registry: io.github.elyngved/failmodes
Endpoint: https://www.failmodes.com/api/mcp
Sources: registry