Trustsource API

x402-powered intelligence APIs for AI agents. Pay per use, no API keys, no accounts.

Quick Start

1. Install dependencies

npm install

2. Configure environment

cp .env.example .env

Open .env and set at minimum:

PAY_TO_ADDRESS=0xYourBaseWalletAddress

Leave everything else as-is to run on Base Sepolia testnet (no real money).

3. Run the server

npm run dev

You should see the startup banner at http://localhost:3000.

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Testing the x402 Flow

Free endpoints (no payment needed)

curl http://localhost:3000/
curl http://localhost:3000/health

Paid endpoint — what an unpaid agent sees

curl http://localhost:3000/trustscore?domain=example.com
# Returns HTTP 402 with payment instructions in the PAYMENT-REQUIRED header

Paid endpoint — bypass payment for local dev testing

The x402 testnet facilitator at https://facilitator.x402.org accepts test payments. To fully test the payment flow, use an x402 client with a funded testnet wallet.

Get Base Sepolia testnet ETH: https://sepolia.base.org/faucet
Get testnet USDC: https://faucet.circle.com (select Base Sepolia)

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Switching to Mainnet (Production)

1. In .env, change:

   NETWORK=eip155:8453
   FACILITATOR_URL=https://api.cdp.coinbase.com/platform/v2/x402
   CDP_API_KEY_ID=your-key-id
   CDP_API_KEY_SECRET=your-key-secret
   

2. Make sure your PAY_TO_ADDRESS Base wallet has some ETH for gas.

3. Your endpoints auto-list in the Bazaar/Agentic.Market after the first paid call clears.

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API Reference

GET /trustscore

Returns a 0–100 trust score for any domain.

Payment: 0.003 USDC per call (via x402)

Params:

• ?domain=example.com — bare domain
• ?url=https://example.com/some/path — full URL (domain extracted)

Response:

{
  "domain": "example.com",
  "score": 80,
  "maxScore": 100,
  "tier": "TRUSTED",
  "breakdown": {
    "domainAge": 30,
    "tld": 20,
    "dnsPresence": 30,
    "registrar": 20
  },
  "details": {
    "age": { "days": 9720, "label": "established (5+ years)", "created": "...", "expires": "..." },
    "tld": ".com",
    "dns": { "hasARecord": true, "hasMxRecord": true, "mxRecords": ["mail.example.com"] },
    "registrar": "GoDaddy"
  },
  "meta": {
    "checkedAt": "2026-05-22T12:00:00.000Z",
    "apiVersion": "1.0",
    "paidWith": "x402/USDC"
  }
}

Tiers:

Score	Tier
75–100	TRUSTED
50–74	MODERATE
25–49	CAUTION
0–24	HIGH_RISK

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Project Structure

agentbrain/
├── src/
│   ├── server.ts          # Express app + x402 middleware
│   └── routes/
│       └── trustscore.ts  # Domain analysis logic
├── .env.example
├── .env                   # Your config (git-ignored)
├── package.json
└── tsconfig.json

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Roadmap

• Phase 1: TrustScore API
• Phase 2: ResearchOracle API
• Phase 3: SkillForge API
• Phase 4: Bazaar/Agentic.Market listing
• Phase 5: Cloudflare Workers deployment