Flow MCP Server

What is Flow MCP Server?

Flow MCP Server is a Model Context Protocol (MCP) server that enables AI assistants to interact with the Flow blockchain. It provides a standardized interface for reading blockchain data, checking balances, resolving domains, executing scripts, and submitting transactions.

How to use Flow MCP Server?

Install and run it via npx -y @outblock/flow-mcp-server --stdio for AI assistant integration, or with --port 3000 to run as an HTTP server. Configure the Flow network and access node using environment variables like FLOW_NETWORK and FLOW_ACCESS_NODE. For development, clone the repository, run npm install, npm run build, and npm start.

Key features of Flow MCP Server

• Check Flow and fungible token balances
• Resolve .find and .fn domain names
• Execute Cadence scripts on the blockchain
• Send and monitor transactions
• Retrieve account information
• Configurable via environment variables

Use cases of Flow MCP Server

• An AI assistant checking a user’s FLOW balance
• Resolving a blockchain domain to an address
• Reading smart contract data with a Cadence script
• Submitting a transaction and tracking its status
• Fetching account details for wallet verification

FAQ from Flow MCP Server

How do I start the server?

Run npx -y @outblock/flow-mcp-server --stdio for stdio mode (for AI assistant integration) or npx -y @outblock/flow-mcp-server --port 3000 to run as an HTTP server.

How do I integrate with Claude or other AI assistants?

Add a tool configuration entry in your assistant’s settings with the command npx -y @outblock/flow-mcp-server --stdio.

What Flow networks are supported?

Mainnet, testnet, and emulator. Specify the network via the FLOW_NETWORK environment variable or the --network CLI flag.

What tools are available?

Tools include get_balance, get_token_balance, get_account, resolve_domain, execute_script, send_transaction, and get_transaction.

Can I run the server in HTTP mode?

Yes, use the --port flag (e.g., --port 3000). HTTP endpoints are available at /sse, /messages, /health, and /.