io.github.elyngved/failmodes
MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes
Open source Repository Open in the app JSON README (API)
About
MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes
Details
- Kind
- MCP servers
- Topic
- AI, RAG & memory
- Publisher
- elyngved
- Origin
- official
- Category
- ferramentas
- Transport
- http
- Version
- 0.1.0
- Last push
- 2026-07-05T16:15:41Z
- Repository state
- ativo
- Language
- JavaScript
- License
- MIT
- Added
- 2026-08-29 03:02:45
- Updated
- 2026-08-29 03:02:45
- Origin id
io.github.elyngved/failmodes
README
# failmodes-mcp
MCP server for the [Fail Modes](https://www.failmodes.com) taxonomy — a machine-readable knowledge base of AI system failure modes.
Provides four tools over 100+ canonical failure mode records spanning factuality, alignment, planning, code generation, instruction following, and more.
## Tools
| Tool | Description |
|------|-------------|
| `search_failure_modes` | Search by symptom text or keyword phrase. Returns ranked matches. |
| `get_failure_mode` | Retrieve the full structured record for a failure mode by ID slug. |
| `list_categories` | List all taxonomy categories with descriptions and mode counts. |
| `list_modes` | List all modes, optionally filtered by category ID. |
## Quick Start
No installation required — run directly with `npx`:
```bash
npx failmodes-mcp
```
## Configuration
### Claude Desktop
Add to `~/Library/Application Support/Claude/claude_desktop_config.json` (macOS) or `%APPDATA%\Claude\claude_desktop_config.json` (Windows):
```json
{
"mcpServers": {
"failmodes": {
"command": "npx",
"args": ["-y", "failmodes-mcp"]
}
}
}
```
### Cursor / VS Code
Add to your MCP settings file:
```json
{
"mcpServers": {
"failmodes": {
"command": "npx",
"args": ["-y", "failmodes-mcp"]
}
}
}
```
### Remote (no install required)
A hosted Streamable HTTP version is also available — no npm package needed:
```json
{
"mcpServers": {
"failmodes": {
"url": "https://www.failmodes.com/api/mcp"
}
}
}
```
## How It Works
On first tool call, the server fetches current taxonomy data from [failmodes.com](https://www.failmodes.com) and caches it in memory for the duration of the session. Requires internet access.
The stdio transport makes this compatible with any MCP client that supports running local processes (Claude Desktop, Cursor, VS Code, etc.).
## Links
- Taxonomy source: [github.com/elyngved/failmodes-taxonomy](https://github.com/elyngved/failmodes-taxonomy)
- Website: [failmodes.com](https://www.failmodes.com)
- Remote MCP manifest: [failmodes.com/server.json](https://www.failmodes.com/server.json)
## License
MIT