Foundry MCP Server

What it does

This server integrates LLM assistants directly with the Foundry toolchain, allowing them to manage a persistent Solidity development environment. It enables AI agents to interact with local Anvil instances or remote RPC endpoints to analyze, deploy, and execute smart contracts.

Tools

• anvil_start/stop/status: Manage local Ethereum nodes.
• cast_call/send/balance/receipt: Execute read/write operations on-chain.
• forge_script: Execute Solidity scripts from the workspace.
• heimdall_disassemble/decode/decompile: Perform deep bytecode analysis and reverse engineering.
• create_solidity_file/read_file: Manage source code within a dedicated Forge workspace.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "foundry": {
      "command": "npx",
      "args": ["@pranesh.asp/foundry-mcp-server"],
      "env": {
        "RPC_URL": "http://localhost:8545",
        "PRIVATE_KEY": "your-key-here"
      }
    }
  }
}

Supported hosts

• claude
• cursor
• windsurf