known_bad_lookup — lazaretto MCP Tool
known_bad_lookup
(known bad lookup) is one of 9 tools on the
lazaretto
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call known_bad_lookup from your client
- Claude Code lazaretto known_bad_lookup run in your project directory
- Claude Desktop lazaretto known_bad_lookup ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor lazaretto known_bad_lookup ~/.cursor/mcp.json
- VS Code lazaretto known_bad_lookup .vscode/mcp.json
- Zed lazaretto known_bad_lookup ~/.config/zed/settings.json
- Windsurf lazaretto known_bad_lookup ~/.codeium/windsurf/mcp_config.json
- Cline lazaretto known_bad_lookup ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI lazaretto known_bad_lookup ~/.gemini/settings.json
- Grok lazaretto known_bad_lookup .mcp.json (in your project root)
- ChatGPT lazaretto known_bad_lookup Settings → Connectors → Advanced → Developer mode
- Claude.ai lazaretto known_bad_lookup Settings → Connectors → Add custom connector
- LangChain lazaretto known_bad_lookup pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http lazaretto https://lazaretto.dev/mcpOther tools on this server
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.