pumpfun-mcp

A Model Context Protocol (MCP) server for interacting with the Pump.fun platform on Solana. This server enables AI assistants to create, buy, and sell tokens on the Pump.fun platform.

Usage

https://github.com/user-attachments/assets/0b0f1f6f-6ea6-4ca8-92a8-b4cc895814e4

To use this server with Claude or other MCP-compatible AI assistants, add the following configuration to your MCP client:

If you're on MacOS and want to run this in Claude Desktop, in your ~/Library/Application \Support/Claude/claude_desktop_config.json file, write the following:

{
  "mcpServers": {
    "pumpfun": {
      "command": "node",
      "args": ["/Users/noahsolomon/Desktop/pumpfun-mcp/build/index.js"], // note this should be YOUR absolute path to index.js, not mine.
      "env": {
        "HELIUS_RPC_URL": "https://your-helius-rpc-url.com"
      }
    }
  }
}

Replace https://your-helius-rpc-url.com with your Helius RPC URL.

Related MCP server: bags-sdk-mcp

Installation

1. Clone this repository:

   git clone https://github.com/noahgsolomon/pumpfun-mcp.git
   cd pumpfun-mcp

2. Install dependencies:

   npm install

3. Create a .env file with your Solana RPC URL:

   HELIUS_RPC_URL=https://your-helius-rpc-url.com

   You can get a free RPC URL from Helius.

   To use an existing Solana wallet, add your private key to the .env file:

   PRIVATE_KEY=your-base58-encoded-private-key

   Then run the conversion script to create a keypair file:

   node convert-key.js

   This will create a default.json file in the .keys folder with your keypair.

4. Build the project:

   npm run build

5. Run the MCP server:

   node build/index.js

Components

Tools

• get-token-info

  • Get information about a Pump.fun token

  • Input parameters:

    • tokenAddress (string, required): The token's mint address

• create-token

  • Create a new Pump.fun token

  • Input parameters:

    • name (string, required): Token name

    • symbol (string, required): Token symbol

    • description (string, required): Token description

    • imageUrl (string, optional): Path to local image file

    • initialBuyAmount (number, required): Initial buy amount in SOL (min 0.0001)

    • accountName (string, optional): Name of the account to use (defaults to "default")

• buy-token

  • Buy a Pump.fun token

  • Input parameters:

    • tokenAddress (string, required): The token's mint address

    • buyAmount (number, required): Amount to buy in SOL (min 0.0001)

    • accountName (string, optional): Name of the account to use (defaults to "default")

    • slippageBasisPoints (number, optional): Slippage tolerance in basis points (defaults to 100)

• sell-token

  • Sell a Pump.fun token

  • Input parameters:

    • tokenAddress (string, required): The token's mint address

    • sellAmount (number, required): Amount of tokens to sell (use 0 to sell all)

    • accountName (string, optional): Name of the account to use (defaults to "default")

    • slippageBasisPoints (number, optional): Slippage tolerance in basis points (defaults to 100)

• list-accounts

  • List all accounts in the keys folder

  • No input parameters required

• get-account-balance

  • Get the SOL and token balances for an account

  • Input parameters:

    • accountName (string, optional): Name of the account to check (defaults to "default")

    • tokenAddress (string, optional): Token address to check balance for

Account Management

The MCP automatically creates and manages Solana keypairs in the .keys folder. Each keypair is stored as a JSON file with the account name as the filename.

When creating a token, the mint keypair is also saved in the .keys folder with the prefix mint-.

To use the MCP with your own account, you need to:

1. Add your private key to the .env file and run node convert-key.js

2. Have sufficient SOL in that wallet

Standalone Scripts

The project includes several standalone scripts that can be run directly:

• Get Token Info: node build/get-token-info.js <token_address>

• Create Token: node build/create-token.js <name> <symbol> <description> <initial_buy_amount> [account_name] [image_url]

• Buy Token: node build/buy-token.js <token_address> <buy_amount_sol> [account_name] [slippage_basis_points]

• Sell Token: node build/sell-token.js <token_address> <sell_amount> [account_name] [slippage_basis_points]

• List Accounts: node build/list-accounts.js

• Get Account Balance: node build/get-token-balance.js <account_name> [token_address]

Important Notes

• Security: The keypairs are stored unencrypted in the .keys folder. Make sure to secure this folder appropriately.

• Fees: All transactions on Solana require SOL for transaction fees. Make sure your accounts have enough SOL.

• Slippage: The default slippage tolerance is 1% (100 basis points). You can adjust this for each transaction.

• Images: When creating tokens with images, you must provide a local file path to the image. Remote URLs are not supported.

Development

Project Structure

• src/index.ts: Main MCP server entry point

• src/get-token-info.ts: Token information retrieval

• src/create-token.ts: Token creation functionality

• src/buy-token.ts: Token buying functionality

• src/sell-token.ts: Token selling functionality

• src/list-accounts.ts: Account listing functionality

• src/get-token-balance.ts: Account balance checking

• src/utils.ts: Shared utility functions

• convert-key.js: Utility to convert a base58 private key to a keypair JSON file

Building

npm run build