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@signet-base/mcp

v0.1.1

Published

MCP server for Signet onchain advertising — estimate and buy spotlight ads with USDC via x402

Downloads

165

Vulnerabilities

Powered byPowered by Snyk
  • 0High
  • 0Medium
  • 0Low

Links

Git

Maintainers

sebayakisebayakih1-hunth1-hunt

Keywords

mcpsignetx402advertisingonchainbaseusdcai-agent

Readme

Signet MCP Server

MCP server for Signet — buy onchain spotlight ads with USDC via x402 payments on Base.

Tools

| Tool | Description | Wallet Required | |------|-------------|:---:| | signet_estimate | Estimate spotlight ad pricing and availability | No | | signet_post | Pay USDC to place a URL on the spotlight | Yes | | signet_list | List recent spotlight ads with view/click stats | No |

Quick Start

# Run directly
npx @signet-base/mcp

# Or install globally
npm install -g @signet-base/mcp
signet-mcp

Configuration

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "signet": {
      "command": "npx",
      "args": ["-y", "@signet-base/mcp"],
      "env": {
        "SIGNET_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Smithery

smithery install @signet-base/mcp

Environment Variables

| Variable | Required | Description | |----------|:---:|-------------| | SIGNET_PRIVATE_KEY | For posting | EVM private key with USDC on Base | | SIGNET_BASE_URL | No | API URL (default: https://signet.sebayaki.com) | | SIGNET_RPC_URL | No | Base RPC (default: https://mainnet.base.org) |

Also accepts BASE_PRIVATE_KEY or EVM_PRIVATE_KEY.

Example Usage

Estimate cost:

"How much does a Signet spotlight cost?"

Post an ad:

"Post https://myapp.xyz on Signet spotlight with 6 hour guarantee"

View recent ads:

"Show me the latest Signet spotlight ads"

How It Works

  1. Agent calls signet_estimate to check pricing
  2. Agent calls signet_post with a URL
  3. Server sends POST to Signet → receives 402 with USDC payment requirements
  4. Server signs EIP-3009 transferWithAuthorization with agent's wallet
  5. Server resends with payment → Signet settles onchain
  6. URL appears in spotlight ✅

~$12 USDC per placement, average 400+ clicks.

Links