Agent Tollgate

Official3 tools

by SkinWinKing · TypeScript

x402 pay-per-call order book signals, token rug audits and fee-bearing swap routes for agents.

com.skinwinking/agent-tollgate MCP Server

The MCP server com.skinwinking/agent-tollgate provides signals and audit-focused capabilities for agent workflows. Its description indicates it handles “x402 pay-per-call order book signals,” performs “token rug audits,” and supplies “fee-bearing swap routes for agents,” based on the server’s stated purpose.

🛠️ Key Features

x402 pay-per-call order book signals
Token rug audits
Fee-bearing swap routes for agents

🚀 Use Cases

Generating order book signals for pay-per-call flows (x402)
Auditing tokens for potential rug risk
Supplying swap route options that include fees for agents

⚡ Developer Benefits

Clear focus on order book signal inputs, audit checks, and fee-aware routing for agents

⚠️ Limitations

Only these capabilities are described; tool counts, topics, and detailed API behavior are not provided

Topics

ai-agentscloudflare-workerscrypto-tradingjupiterlifimcp-servermodel-context-protocolsolanausdcx402x402-protocol

Captured live from the server via tools/list.

orderbook_imbalance

Aggregates spot order book depth and returns bid/ask notional within 10/25/50/100 bps of mid, signed imbalance in [-1,1], largest liquidity walls and a directional signal. Paid: 0.02 USDC per call via x402.

Parameters2

pair	string	required	Trading pair such as SOL-USDT, BTC-USDT, ETH-USDT
paymentProof	string	optional	Payment proof: USDC tx hash on Polygon or Base (0x...) or Solana tx signature. Omit on the first call to receive the 402 payment instructions, pay, then call again with the proof.

Raw schema

{
  "type": "object",
  "properties": {
    "pair": {
      "type": "string",
      "description": "Trading pair such as SOL-USDT, BTC-USDT, ETH-USDT"
    },
    "paymentProof": {
      "type": "string",
      "description": "Payment proof: USDC tx hash on Polygon or Base (0x...) or Solana tx signature. Omit on the first call to receive the 402 payment instructions, pay, then call again with the proof."
    }
  },
  "required": [
    "pair"
  ]
}

token_audit

Inspects mint and freeze authority, token-2022 extensions, proxy and ownership state, privileged functions and top holder concentration. Returns a 0-100 risk score with itemised flags. Paid: 0.20 USDC per call via x402.

Parameters3

chain	string	required
address	string	required	Token mint (Solana) or contract address (EVM)
paymentProof	string	optional	Payment proof: USDC tx hash on Polygon or Base (0x...) or Solana tx signature. Omit on the first call to receive the 402 payment instructions, pay, then call again with the proof.

Raw schema

{
  "type": "object",
  "properties": {
    "chain": {
      "type": "string",
      "enum": [
        "solana",
        "polygon",
        "base",
        "ethereum"
      ]
    },
    "address": {
      "type": "string",
      "description": "Token mint (Solana) or contract address (EVM)"
    },
    "paymentProof": {
      "type": "string",
      "description": "Payment proof: USDC tx hash on Polygon or Base (0x...) or Solana tx signature. Omit on the first call to receive the 402 payment instructions, pay, then call again with the proof."
    }
  },
  "required": [
    "chain",
    "address"
  ]
}

swap_quote_and_build

Same-chain Solana swaps route through Jupiter with a referral fee account. Cross-chain and EVM swaps route through LI.FI with an integrator fee. The response contains a serialized unsigned transaction to be signed and broadcast by the caller.

Parameters9

fromChain	string	required
toChain	string	required
inputToken	string	required	Token address/mint, or symbol (SOL, USDC, USDT, ETH)
outputToken	string	required	Token address/mint, or symbol
amount	string	required	Input amount in base units (lamports, wei, 1e-6 USDC)
userAddress	string	required	Wallet that signs the transaction on fromChain
destinationAddress	string	optional	Receiver on toChain; defaults to userAddress
slippageBps	integer	optional
priority	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "fromChain": {
      "type": "string",
      "enum": [
        "solana",
        "ethereum",
        "arbitrum",
        "base",
        "polygon"
      ]
    },
    "toChain": {
      "type": "string",
      "enum": [
        "solana",
        "ethereum",
        "arbitrum",
        "base",
        "polygon"
      ]
    },
    "inputToken": {
      "type": "string",
      "description": "Token address/mint, or symbol (SOL, USDC, USDT, ETH)"
    },
    "outputToken": {
      "type": "string",
      "description": "Token address/mint, or symbol"
    },
    "amount": {
      "type": "string",
      "description": "Input amount in base units (lamports, wei, 1e-6 USDC)"
    },
    "userAddress": {
      "type": "string",
      "description": "Wallet that signs the transaction on fromChain"
    },
    "destinationAddress": {
      "type": "string",
      "description": "Receiver on toChain; defaults to userAddress"
    },
    "slippageBps": {
      "type": "integer",
      "minimum": 1,
      "maximum": 1000,
      "default": 50
    },
    "priority": {
      "type": "string",
      "enum": [
        "none",
        "fast",
        "turbo"
      ],
      "default": "fast"
    }
  },
  "required": [
    "fromChain",
    "toChain",
    "inputToken",
    "outputToken",
    "amount",
    "userAddress"
  ]
}

README.md3 KBView on GitHub

agent-tollgate-engine

Live at https://skinwinking.com. Machine-readable: /llms.txt, /openapi.json, MCP at https://skinwinking.com/mcp.

Pay-per-call trading intelligence and fee-bearing swap routing for autonomous agents, on Cloudflare Workers.

Revenue paths:

x402 micropayments in USDC (Polygon or Solana) for orderbook-imbalance (0.02 USDC) and token-audit (0.20 USDC).
30 bps platform fee on swaps built by quote-and-build (Jupiter on Solana, LI.FI cross-chain/EVM).

All payments go straight to the merchant addresses in wrangler.toml. The server holds no keys and no funds.

Layout

Package	Role
`packages/core`	config, route catalog, on-chain payment verification (EVM, Solana, x402 facilitator), replay protection interface
`packages/api-worker`	Hono Worker, `x402PaymentGate` middleware, Durable Object nonce store, route handlers
`packages/omni-router`	Jupiter (Solana) and LI.FI (cross-chain) quote builders with fee embedding
`packages/discovery`	`/llms.txt`, `/openapi.json`, MCP server (HTTP at `/mcp`, stdio via `npm run mcp`)
`packages/simulation-agent`	end-to-end simulated agent

Local run

bash

npm install
cp .env.example .dev.vars        # then set SOLANA_RPC_URL and EVM_RPC_URL to private endpoints
npm run dev                      # http://127.0.0.1:8787, simulation receipts enabled

npm run dev sets SIM_SECRET, which enables HMAC simulation receipts (Bearer sim_...). Never set SIM_SECRET in production.

If port 8787 is busy: npx wrangler dev --port 8799 --var SIM_SECRET:dev-simulation-secret and BASE_URL=http://127.0.0.1:8799.

Simulation

With npm run dev running in another terminal:

bash

npm run simulate

Steps: unpaid call returns 402, simulated payment succeeds, replay is rejected, a Solana swap quote proves the fee account is inside the built transaction, a Polygon to Base quote proves the LI.FI integrator fee.

Production prerequisites

RPC: public endpoints are rate-limited or blocked. Use private ones.

bash

npx wrangler secret put SOLANA_RPC_URL
npx wrangler secret put EVM_RPC_URL

LI.FI integrator: register LIFI_INTEGRATOR at https://portal.li.fi, set the fee wallet to the EVM payout address, and set the fee to 0.3%. Without it LI.FI rejects quotes that carry fee.
Solana fee token accounts: the Jupiter fee is paid in the output token to the merchant's associated token account for that mint. The route returns FEE_ACCOUNT_MISSING until that account exists. Receiving a small amount of the token (or creating the ATA in Phantom) creates it. USDC and wSOL cover the main pairs.
Optional X402_FACILITATOR_URL enables X-402-Signature settlement through an x402 facilitator.

Deploy

bash

npx wrangler deploy

Attach the domain under Workers & Routes in the Cloudflare dashboard (custom domain on the worker).

Payment proofs

Header	Meaning
`Authorization: Bearer 0x<64 hex>`	Polygon USDC transfer to the merchant, at least the route price, at least `EVM_MIN_CONFIRMATIONS` deep, younger than `PAYMENT_MAX_AGE_SEC`
`Authorization: Bearer <base58 signature>`	Solana USDC transfer, `confirmed` commitment
`X-402-Signature: <base64 payload>`	x402 payload verified and settled via the facilitator

Each proof is accepted once (Durable Object, 7 day TTL).

Install

Tools (3)

orderbook_imbalancetoken_auditswap_quote_and_build

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://skinwinking.com/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "agent-tollgate": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://skinwinking.com/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

com.skinwinking/agent-tollgate MCP Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

orderbook_imbalance

token_audit

swap_quote_and_build

agent-tollgate-engine

Layout

Local run

Simulation

Production prerequisites

Deploy

Payment proofs

Install

Remote endpoint

Related servers