Token Intelligence API

x402-powered paid API that returns security analysis, deterministic risk scores, and natural language summaries for any EVM token.

Live (testnet): https://token-intel-api.tatsu77.workers.dev

How It Works

Client → GET /api/v1/token/{chainId}/{address}
       ← 402 Payment Required (USDC via x402)
       → Payment header + retry
       ← 200 { token, security, risk_score, summary, ... }

One HTTP request, one microtransaction ($0.005 USDC), one structured response.

API

GET /api/v1/token/{chainId}/{address}

Payment: $0.005 USDC via x402 protocol (Base Sepolia testnet)

Path parameters:

Parameter	Description
chainId	1 (Ethereum) or 8453 (Base)
address	ERC-20 token contract address

Response (200):

{
  "token": {
    "name": "Pepe",
    "symbol": "PEPE",
    "chain_id": "1",
    "address": "0x6982508145454ce325ddbe47a25d4ec3d2311933",
    "total_supply": "420690000000000000000000000000000"
  },
  "security": {
    "is_honeypot": false,
    "is_open_source": true,
    "is_proxy": false,
    "is_mintable": false,
    "hidden_owner": false,
    "selfdestruct": false,
    "external_call": false,
    "buy_tax": "0",
    "sell_tax": "0"
  },
  "holders": {
    "holder_count": 320000,
    "top10_percentage": "0.0",
    "creator_percentage": "0.0",
    "lp_holder_count": 500
  },
  "liquidity": {
    "is_in_dex": true,
    "dex": [
      { "name": "UniswapV2", "liquidity": "13000000", "pair": "0x..." }
    ],
    "lp_total_supply": "...",
    "is_lp_locked": false
  },
  "risk_score": 85,
  "risk_level": "LOW",
  "summary": "LOW risk. Contract is open source, verified. Top 10 holders control 0.0%. $13.0M in UniswapV2 pool.",
  "cached": false,
  "data_age_seconds": 0
}

Error responses:

Status	Error	Description
400	invalid_address	Invalid contract address format
402	Payment Required	x402 payment needed
404	token_not_found	No data for this token
429	upstream_throttled	GoPlus rate limited (retry in 30s)
503	upstream_unavailable	GoPlus API down

GET /health

Returns { "status": "ok", "version": "0.1.0" }. No payment required.

Risk Scoring

Deterministic 100-point scale:

Severity	Deduction	Flags
CRITICAL	Score = 0	Honeypot
SEVERE	-30 each	Mintable, hidden owner, ownership reclaimable, self-destruct
HIGH	-20 each	Tax > 10%, proxy contract
MODERATE	-10 each	Not open source, external calls, blacklist function
LOW	-5 each	Holder count < 100

Risk levels: CRITICAL (0-25) / HIGH (26-50) / MODERATE (51-75) / LOW (76-100)

Quick Start (Client)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { toClientEvmSigner } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";
import { createPublicClient, http } from "viem";
import { baseSepolia } from "viem/chains";

const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");
const publicClient = createPublicClient({ chain: baseSepolia, transport: http() });
const signer = toClientEvmSigner(account, publicClient);

const client = new x402Client();
registerExactEvmScheme(client, { signer });
const fetchWithPay = wrapFetchWithPayment(fetch, client);

const res = await fetchWithPay(
  "https://token-intel-api.tatsu77.workers.dev/api/v1/token/1/0x6982508145454Ce325dDbE47a25d4ec3d2311933"
);
const data = await res.json();
console.log(data.risk_score, data.risk_level, data.summary);

Prerequisites: Test USDC on Base Sepolia from Circle Faucet.

Development

# Install
npm install

# Local dev (uses .dev.vars for secrets)
npm run dev

# Run E2E tests
PRIVATE_KEY=0x... npx tsx test/client.ts

# Deploy (testnet)
npx wrangler deploy

# Deploy (mainnet, requires CDP keys)
npx wrangler deploy --env production

Environment Variables

Variable	Where	Description
PAY_TO_ADDRESS	Wrangler secret	EOA address to receive USDC
GOPLUS_API_KEY	Wrangler secret	GoPlus API key
CDP_API_KEY_ID	Wrangler secret (production)	Coinbase Developer Platform key ID
CDP_API_KEY_SECRET	Wrangler secret (production)	CDP key secret

Architecture

Cloudflare Workers (Hono)
  ├── x402 Payment Middleware (@x402/hono)
  ├── Bazaar Discovery Extension (@x402/extensions/bazaar)
  ├── Cache Layer (Cloudflare KV, 5min TTL)
  ├── GoPlus Security API (upstream data)
  ├── Deterministic Risk Scoring (rule-based)
  └── Template Summary Generator (GPU-free)

Tech Stack

• Runtime: Cloudflare Workers
• Framework: Hono
• Payment: x402 protocol (USDC on Base)
• Data: GoPlus Security API
• Cache: Cloudflare KV

License

MIT