Mcp Broadcast

This server connects Claude to Crypto APIs' blockchain broadcasting infrastructure, letting you submit locally signed transactions to production and test networks. It exposes a single broadcast_signed_transaction tool that works across both EVM chains (Ethereum, BSC, Polygon, Arbitron, Base, Optimism, Tron) and UTXO chains (Bitcoin, Litecoin, Dogecoin, Dash, Zcash). You'd reach for this when you need Claude to push signed transaction hex strings to the blockchain after handling signing separately, either through their companion mcp-signer server or your own signing setup. Requires a Crypto APIs account and API key. Supports both stdio and HTTP transports, with HTTP mode offering per-request API keys for multi-tenant deployments.