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@outblock/flow MCP Server

@Outblock

Repository

Basic information

Category

Other

License

MIT license

Transports

stdio

Author

Outblock

About @outblock/flow MCP Server

Flow blockchain tools for Model Context Protocol (MCP)

#flow#mcp#cadence#flow-blockchain#mcp-server

@outblock/flow MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "flow-mcp": {
      "command": "bun",
      "args": [
        "run",
        "format"
      ]
    }
  }
}

@outblock/flow MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is @outblock/flow-mcp?

@outblock/flow-mcp is a Model Context Protocol server that provides tools for interacting with the Flow blockchain. It enables users to query balances, account details, contract source code, and COA information on both mainnet and testnet.

How to use @outblock/flow-mcp?

Install the package via npm (npm install @outblock/flow-mcp) or bun (bun add @outblock/flow-mcp). Then add the server to your MCP configuration (e.g., for Claude) using npx -y @outblock/flow-mcp as the command. Configuration files are located at ~/Library/Application Support/Claude/mcp.json (macOS), %APPDATA%/Claude/mcp.json (Windows), or ~/.config/Claude/mcp.json (Linux). Restart Claude to load the server.

Key features of @outblock/flow-mcp

  • Retrieve FLOW balance for any address
  • Get token balance for any Flow token
  • Obtain COA account information
  • Fetch source code of deployed contracts
  • View detailed account info including storage stats

Use cases of @outblock/flow-mcp

  • Checking FLOW or token balances for wallets or dApps
  • Inspecting account storage and metadata
  • Retrieving contract source code for auditing or analysis
  • Querying COA (Coinbase Onchain Account) details on Flow
  • Integrating Flow blockchain data into AI-assisted workflows

Frequently asked questions

1

What dependencies does @outblock/flow-mcp require?

Node.js and npm or bun are needed for installation. The server is run via `npx` (which comes with Node.js) or directly with bun.

2

Which networks are supported?

The tools accept an optional `network` parameter that can be set to `'mainnet'` or `'testnet'`. Default behavior is not specified.

3

How do I configure @outblock/flow-mcp in Claude?

Add a JSON entry to your MCP configuration file under `mcpServers` with the command `npx`, arguments `["-y", "@outblock/flow-mcp"]`, and a label such as `"flow"`.

4

Does the project provide development tools?

Yes. It includes a script to scaffold new MCP tools (`bun run scripts/create-tool.ts <tool-name>`) and commands for formatting, testing, and building.

5

What license is @outblock/flow-mcp released under?

The project is licensed under the MIT License.

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