This server validates your MCP code and documentation against the official spec to catch technical inaccuracies before they ship. It exposes four tools: check_mcp_claim for multi-part validation with compound claim decomposition, check_mcp_quick_fact for yes/no verification, search_spec for semantic lookups across specification versions, and list_spec_versions to see what's available. There's also a migrate-mcp-content prompt that walks you through updating content between spec versions (draft, 2025-06-18, 2024-11-05, etc.). Under the hood it uses OpenAI embeddings for semantic search and AI validation with confidence scoring. Reach for this when writing tutorials, maintaining MCP libraries, or migrating to newer spec versions. Requires an OpenAI API key and supports OpenTelemetry tracing to Arize Phoenix for observability.
claude mcp add --transport stdio carlisia-mcp-factcheck uvx mcp-factcheck