Connects Claude to Google's free Knowledge Graph Search API for structured entity lookups. You get two tools: query based search that returns entities by name with type filtering and result limits, and direct MID lookup if you already have Google's machine identifiers. Returns JSON with entity types, descriptions, Wikipedia URLs, images, and relevance scores. The Knowledge Graph API is genuinely free with no billing account required, which makes this a zero cost option for entity verification and research workflows. Useful when you need Claude to distinguish between ambiguous entities (Python the language versus Python the snake) or pull canonical information about people, places, organizations, and concepts from Google's database.
claude mcp add --transport stdio io.github.houtini-ai-google-knowledge-graph uvx google-knowledge-graph