Pre-indexed metadata for 15,000+ subgraphs on The Graph Network, giving agents domain classification, protocol type detection, and reliability scores without the usual 3-4 discovery tool calls. Exposes four MCP tools: search by domain/network/protocol, get natural language recommendations, fetch full subgraph detail, and list registry stats. Each result includes both legacy query URLs and x402 payment endpoints that accept $0.01 USDC on Base per query with no API key. Reliability scores combine query fees, volume, curation signal, and indexer allocations into a single 0-1 metric. Useful when building agents that need to query blockchain data through The Graph but don't want to crawl schemas and infer structure from scratch every time.
claude mcp add --transport stdio io.github.paulieb14-subgraph-registry-mcp -- npx -y subgraph-registry-mcp