MCP Registry not found or connection failed
Cause: The client doesn’t support MCP Registry, or the registry identifier is incorrect. Solution:- Ensure you’re using a client that supports MCP Registry (e.g., latest Claude Desktop versions).
- Verify the registry identifier:
com.generect/generect-mcp - If your client doesn’t support registry, use the Local MCP (npx) method instead.
401 Unauthorized error
Cause: Your API key is invalid or missing (applicable only for local MCP) Solution:- Make sure you replaced
your-api-keywith your actual key. - Do not remove the word
Tokenfrom the value — it should look like:GENERECT_API_KEY="Token your-real-key" - Ask for a status for this key.
Timeout error
Cause: The API request took longer than the default timeout (1 minute). For example, a lead search may take longer with very broad filters. Solution:- If you are using local MCP: increase the timeout limit in your MCP configuration (default:
60000ms).
- Try refining your query (e.g., add more filters for leads or companies).
MCP server does not appear in the client
Cause: Configuration file is invalid, or the MCP server didn’t start. Solution:- Double-check JSON syntax and content in your config (
claude_desktop_config.json, Cursor config). NPM should begenerect-ultimate-mcp - Try setting MCP_DEBUG=1 to see logs when starting the MCP.
- Restart your client after editing the configuration.
LLM doesn’t call MCP tools
Cause: The LLM decides when to call external tools — it may not always trigger them. Solution:- Rephrase your request in a way that makes tool usage more likely (e.g., explicitly ask to “search leads”).
- Check that the MCP server is shown as active in the client’s settings.