Tollbooth Swap API

Non-custodial token swap execution and token safety screening on 8 chains — Solana, Base, Ethereum, Arbitrum, Polygon, Optimism, BSC, Avalanche.

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What it can do

  • Get Service Info: Get Tollbooth service metadata: supported chains, swap fee, x402 toll pricing.
  • Resolve Token: Resolve a token ticker symbol (e.g. PEPE, WIF, USDC) to contract addresses on a chain, free. Curated majors return one verified match; others return live DEX matches ranked by liquidity
  • Get Quote: Get a free indicative swap quote (output amount includes Tollbooth's fee). Use before build_swap to decide whether to trade.

What data it sees

Do you need an account

No: the server works without sign-in

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.

How to connect

How to connect Tollbooth Swap API to Claude

The server address to paste into Claude settings:

https://tollbooth--audiolab.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Tollbooth Swap API to ChatGPT

The server address to paste into ChatGPT settings:

https://tollbooth--audiolab.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Tollbooth Swap API to Cursor

The server address to paste into Cursor settings:

https://tollbooth--audiolab.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

get_service_infoGet Tollbooth service metadata: supported chains, swap fee, x402 toll pricing.
resolve_tokenResolve a token ticker symbol (e.g. PEPE, WIF, USDC) to contract addresses on a chain, free. Curated majors return one verified match; others return live DEX matches ranked by liquidity.
get_quoteGet a free indicative swap quote (output amount includes Tollbooth's fee). Use before build_swap to decide whether to trade.
build_swapBuild an unsigned swap transaction for the taker wallet to sign and submit. Costs an x402 toll in USDC (paid automatically when the x-tollbooth-payer-key header is set). Returns the transaction, quote, and a signed receipt.
check_tokenToken safety screen before trading: honeypot, rug-pull, freeze/mint authority, transfer hooks, sell tax, blacklists. Returns verdict (ok/warn/critical/unknown), risk score, and findings. Costs an x402 toll.
get_receiptFetch a signed Tollbooth receipt by id and verify its signature.