tool · inferred from evidence
dataforseo-mcp-server
A server tool used via npx in Claude Desktop, which was passing an invalid 'language_code' field to DataForSEO Labs endpoints.
- Invalid Field: 'language_code' (Error 40501) on DataForSEO Labs endpoints
This is not an API bug: a cached old build from npx was the cause. Run `npx -y dataforseo-mcp-server@latest` so npx fetches the current build instead of reusing its cache, and the Labs endpoints stop sending the invalid `language_code` fiel