# monerometrics API > Reorg-aware Monero (XMR) network observatory: chain reorganizations, orphan blocks, mining-pool centralization with cryptographically verified attribution. Free, no API key, no account, no tracking. Rate limit 300 requests/minute per IP. ## Interfaces - OpenAPI: https://api.monerometrics.net/openapi.json - Interactive docs: https://api.monerometrics.net/docs - Model Context Protocol (streamable HTTP): https://api.monerometrics.net/mcp - Tor: http://6wbhchvavey26lbtscl6w6qg76balycixtsklcggrsslyk4xah6sbbad.onion ## What it answers - Network info: Current chain tip, difficulty, hashrate estimate and sync status. - Chain reorganizations: Detected reorganizations with depth, fork point and displaced transactions. - Orphan blocks: Recent orphaned blocks with their canonical replacements. - Mining pool centralization: Pool share of recent blocks and the Nakamoto coefficient. - Block attribution provenance: How each block was attributed to a pool: view-key proof, pool API claim, coinbase heuristic or unattributed. - Block lookup: Look up any block by height or hash, down to the genesis block. - XMR price: Centralized exchange price alongside the Haveno street price. ## Notes for agents - Attribution of a block to a mining pool is labelled by evidence: viewkey_proof, pool_api, coinbase_heuristic or none. Do not present a claimed attribution as proven. - Full indexing coverage starts at height 3490000. Below it, only the canonical chain is known and pool attribution is mostly absent. - Reorg and orphan data only covers what this node observed live. Source code: https://github.com/nowi333/monerometrics Contact: contact@monerometrics.net Optional donation in XMR: 492qrWLgcdd9vUQFeq2mZMUSa2KU7UT3fRpajqNPiQoHNpRUZX1CiGMQeCok2CusfLWXWsZ3KaNL6PkakAxgXyeMRhkM65s Optional donation in any cryptocurrency (settled to XMR, no account): https://trocador.app/anonpay/?ticker_to=xmr&network_to=Mainnet&donation=True&name=monerometrics&description=Support%20monerometrics&buttonbgcolor=ff6600&address=492qrWLgcdd9vUQFeq2mZMUSa2KU7UT3fRpajqNPiQoHNpRUZX1CiGMQeCok2CusfLWXWsZ3KaNL6PkakAxgXyeMRhkM65s