Do I need a Crypto APIs API key to use this tool?

Yes, a valid Crypto APIs API key is absolutely essential for all operations. For HTTP transport, the key can be provided at startup for global use or required per-request via the 'x-api-key' header.

Can I broadcast transactions signed by external tools or methods?

Absolutely. Crypto APIs Broadcast is designed for flexibility, working seamlessly with transactions signed by `@cryptoapis-io/mcp-signer` or any other external transaction signing solution you prefer.

What is Crypto APIs Broadcast used for?

Crypto APIs Broadcast enables developers to reliably send locally signed raw transactions to numerous EVM and UTXO blockchain networks, simplifying the complex transaction broadcasting process across various chains.

Which blockchain networks are supported by Crypto APIs Broadcast?

It supports a wide array of EVM chains such as Ethereum, BSC, Polygon, Avalanche, Arbitrum, Base, Optimism, Tron, and UTXO chains including Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, and Zcash.

Crypto APIs Broadcast

Name: Crypto APIs Broadcast
Author: CryptoAPIs-io

byCryptoAPIs-io

0•

API Development

Developer Tools

Broadcast signed raw transactions to multiple blockchain networks through the Crypto APIs platform.

Crypto APIs Broadcast functions as a Model Context Protocol (MCP) server designed to facilitate the submission of locally signed raw transactions to a wide range of supported EVM and UTXO blockchains. This tool seamlessly integrates with the Crypto APIs Broadcast product, enabling developers and AI agents to efficiently propagate signed transactions across various networks. It ensures secure and reliable interaction with blockchain ecosystems after transactions have been signed externally or via `@cryptoapis-io/mcp-signer`.

Key Features

01Compatible with transactions signed by `@cryptoapis-io/mcp-signer` or any external signer

02Offers flexible HTTP and Stdio transport modes with API key management

03Broadcast signed transaction hex to any supported blockchain

040 GitHub stars

05Supports a wide array of EVM blockchains (Ethereum, BSC, Polygon, Avalanche, Arbitrum, Base, Optimism, Tron)

06Supports multiple UTXO blockchains (Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash)

Use Cases

01Integrate blockchain transaction broadcasting capabilities into AI agent workflows (e.g., Claude, Cursor)

02Enable programmatic broadcasting of signed transactions across diverse blockchain networks for dApp developers

03Automate the submission of signed cryptocurrency transactions within n8n workflows