Uniswap tx Builder MCP Server: Install & Setup

Install Uniswap tx Builder in Claude Code

npm

Claude Code

claude mcp add uniswap-tx-builder -- npx -y @yummybait/uniswap-tx-builder-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "uniswap-tx-builder": {
      "command": "npx",
      "args": [
        "-y",
        "@yummybait/uniswap-tx-builder-mcp"
      ]
    }
  }
}

Docker

Claude Code

claude mcp add uniswap-tx-builder -- docker run -i --rm ghcr.io/yummybait-fin/uniswap-tx-builder-mcp:0.4.3

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "uniswap-tx-builder": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/yummybait-fin/uniswap-tx-builder-mcp:0.4.3"
      ]
    }
  }
}

Frequently asked questions

What does the Uniswap tx Builder MCP server do?

Builds and simulates unsigned Uniswap v3 liquidity-position transactions — keyless, never signs.

Is the Uniswap tx Builder MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Uniswap tx Builder run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Uniswap tx Builder to Claude Code?

Run: claude mcp add uniswap-tx-builder -- npx -y @yummybait/uniswap-tx-builder-mcp

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