Flow Blockchain
About
Integrates with the Flow blockchain to enable direct querying of account balances, domain resolution, and transaction execution through RPC communication for seamless blockchain data access and operations.
Details
- Author
- lmcmz
- Repository
- lmcmz/flow-mcp-server
- GitHub stars
- 1
- Downloads
- 375
- Categories
- Productivity, Developer Tools, Design, AI, Search, Automation, Frontend, Infrastructure, Other
Jump to
- Balance checking for Flow and fungible tokens
- Domain resolution for .find and .fn domains
- Script execution for reading blockchain data
- Transaction submission and monitoring
- Account information retrieval
- Flow configuration based on environment variables
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
Flow BlockchainCommand (node, npx, python, etc.)npxArguments-
Argument 1
-y -
Argument 2
@highlight/mcp-server
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
-
Argument 1
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
The server can be configured using environment variables:
- PORT - HTTP port to listen on (if not set, defaults to stdio mode)
- FLOW_NETWORK - Flow network to connect to (mainnet, testnet, emulator)
- FLOW_ACCESS_NODE - Custom Flow access node URL
- LOG_LEVEL - Logging level (debug, info, warn, error)
git clone https://github.com/lmcmz/flow-mcp-server.git
cd flow-mcp-server
npm install
npm run build
npm start
bashget_balance
Get Flow balance for an address. Parameters: address (string), network (string)
get_token_balance
Get fungible token balance. Parameters: address (string), token (string), network (string)
get_account
Get account information. Parameters: address (string)
resolve_domain
Resolve a .find or .fn domain to an address. Parameters: domain (string)
execute_script
Execute a Cadence script. Parameters: script (string), args (optional array)
send_transaction
Send a transaction to the blockchain. Parameters: transaction (object)
get_transaction
Get transaction details by ID. Parameters: transaction_id (string)
- get_balance - Get Flow balance for an address
- get_token_balance - Get fungible token balance
- get_account - Get account information
- resolve_domain - Resolve a .find or .fn domain to an address
- execute_script - Execute a Cadence script
- send_transaction - Send a transaction to the blockchain
- get_transaction - Get transaction details by ID
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"flow blockchain": {
"env": {},
"args": [
"-y",
"@highlight/mcp-server"
],
"command": "npx"
}
}
}
Linux
{
"env": [],
"args": [
"-y",
"@highlight/mcp-server"
],
"command": "npx"
}
Macos
{
"env": [],
"args": [
"-y",
"@highlight/mcp-server"
],
"command": "npx"
}
Windows
{
"env": [],
"args": [
"/c",
"npx",
"-y",
"@highlight/mcp-server"
],
"command": "cmd"
}
Flow MCP Server
A Model Context Protocol (MCP) server for interacting with the Flow blockchain. This server enables AI assistants to access Flow blockchain data and perform operations through a standardized interface.
Features
- Balance checking for Flow and fungible tokens
- Domain resolution for .find and .fn domains
- Script execution for reading blockchain data
- Transaction submission and monitoring
- Account information retrieval
- Flow configuration based on environment variables
Installation
Using npx (Recommended)
npx -y @outblock/flow-mcp-server --stdio
Or specify HTTP mode with a port:
npx -y @outblock/flow-mcp-server --port 3000
Local Installation (For Development)
git clone https://github.com/lmcmz/flow-mcp-server.git
cd flow-mcp-server
npm install
npm run build
npm start
Usage
Running with npx
# Run in stdio mode (for AI assistant integration)
npx -y @outblock/flow-mcp-server --stdio
Run as HTTP server on port 3000
npx -y @outblock/flow-mcp-server --port 3000
Specify Flow network
npx -y @outblock/flow-mcp-server --port 3000 --network testnet
Running Local Development Server
# Run in stdio mode
npm run build
npm start
Run as HTTP server on port 3000
npm run build
PORT=3000 npm start
For development with auto-reload
npm run dev
Configuration
The server can be configured using environment variables:
- PORT - HTTP port to listen on (if not set, defaults to stdio mode)
- FLOW_NETWORK - Flow network to connect to (mainnet, testnet, emulator)
- FLOW_ACCESS_NODE - Custom Flow access node URL
- LOG_LEVEL - Logging level (debug, info, warn, error)
Using with AI Assistants
When integrating with AI assistants like Claude, you can start the MCP server in stdio mode and connect it to your assistant's tool configuration.
Example Claude tool configuration:
{
"tools": [
{
"name": "flow-mcp-server",
"command": "npx -y @outblock/flow-mcp-server --stdio"
}
]
}
HTTP API Endpoints
When running in HTTP mode, the following endpoints are available:
- /sse - Server-Sent Events endpoint for real-time updates
- /messages - POST endpoint for sending tool requests
- /health - Health check endpoint
- / - Server information
Example HTTP API call:
curl -X POST http://localhost:3000/messages \
-H "Content-Type: application/json" \
-d '{
"tool_request": {
"name": "get_balance",
"parameters": {
"address": "0x2d4c3caffbeab845",
"network": "mainnet"
}
}
}'
Available Tools
- get_balance - Get Flow balance for an address
- get_token_balance - Get fungible token balance
- get_account - Get account information
- resolve_domain - Resolve a .find or .fn domain to an address
- execute_script - Execute a Cadence script
- send_transaction - Send a transaction to the blockchain
- get_transaction - Get transaction details by ID
Version History
- v0.1.1 - Bug fix for formatArguments import issue in transaction service
- v0.1.0 - Initial release with basic Flow blockchain integration
License
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