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Tollbooth Swap API

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npm tollboothswap-mcpstreamable-httpMITupdated 1mo ago

MCP server for Tollbooth: non-custodial token swap execution and token safety screening on 8 chains — Solana, Base, Ethereum, Arbitrum, Polygon, Optimism, BSC, Avalanche. Quotes and symbol resolution are free; swap builds ($0.005) and safety checks ($0.01) are paid per-call in USDC via the x402 protocol — no API keys, no accounts, no subscriptions.

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What can you do with Tollbooth Swap API?

tollboothswap-mcp — Token Swaps & Honeypot Checks for AI Agents (MCP Server)

MCP server for Tollbooth: non-custodial token swap execution and token safety screening on 8 chains — Solana, Base, Ethereum, Arbitrum, Polygon, Optimism, BSC, Avalanche. Quotes and symbol resolution are free; swap builds (~$0.005) and safety checks ($0.01) are paid per-call in USDC via the x402 protocol — no API keys, no accounts, no subscriptions.

Quick start

npx tollboothswap-mcp

Claude Desktop / Cursor / any MCP client

{
  "mcpServers": {
    "tollbooth": {
      "command": "npx",
      "args": ["-y", "tollboothswap-mcp"],
      "env": {
        "TOLLBOOTH_PAYER_KEY": "0x<EVM private key holding USDC on Base>"
      }
    }
  }
}

TOLLBOOTH_PAYER_KEY is optional: without it the free tools (resolve_token, get_quote, get_service_info, get_receipt) work fully, and paid tools return x402 payment instructions instead of results. With it, tolls are paid automatically and gaslessly (EIP-3009 — the key never spends gas, only USDC).

Tools

Tool Cost What it does
resolve_token free Ticker symbol → contract addresses, ranked by DEX liquidity
get_quote free Fee-inclusive indicative swap quote
check_token $0.01 Honeypot / rug-pull / freeze-authority / sell-tax screening with verdict + findings
build_swap ~$0.005 Unsigned, ready-to-sign swap transaction + HMAC-signed receipt (safeMode screens both tokens first)
get_receipt free Verify a past build receipt by id
get_service_info free Service manifest: chains, fees, pricing

Trust model

Tollbooth is non-custodial: it builds transactions but never holds keys or funds. Your agent signs and submits everything with its own wallet. Every paid build returns a signed receipt for audit trails.

Links

License

MIT