Agent Search Pro — x402 Pay-Per-Call API + MCP Server

Live endpoint: https://aggregator-beta.vercel.app

Agent-native web search and research synthesis, paid per call in USDC on Base via x402. No buyer API keys, accounts, or subscriptions. Includes standard HTTP routes for x402 discovery plus a streamable HTTP MCP facade.

Experimental service: payment and search paths are working and dogfooded with a real 0.02 USDC Base transaction. Availability, pricing, and upstream providers may change during validation.

Tiers

Related MCP server: Base Intel Search

Use (any MCP client, streamable HTTP)

POST https://<deployed-url>/mcp
Content-Type: application/json

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"web_search","arguments":{"query":"x402 protocol"}}}

Unpaid calls → HTTP 402 with a canonical base64 PAYMENT-REQUIRED header (x402 V2). Compatible agent clients retry with PAYMENT-SIGNATURE; the public XPay facilitator verifies and settles EIP-3009 USDC directly from buyer to seller on Base.

Discovery surfaces

• GET /health — liveness + tiers

• GET /.well-known/x402.json — machine-readable payment manifest

• GET /llms.txt — LLM-readable service description

Run locally

MOCK_MODE=1 npm install && npm start   # full 402 flow, mock settlement — no keys
npm test                                # 16-check E2E suite

Production env

See .env.example. Requires: SERPER_API_KEY, PAY_TO_ADDRESS (Base wallet), and PUBLIC_URL. X402_FACILITATOR_URL optionally overrides the default public XPay facilitator. ALCHEMY_URL is only needed for the disabled-by-default manual tx-hash fallback.

Telemetry

Every interaction is emitted as structured [telemetry] JSON to platform logs. Production writes one immutable JSON event to a private Vercel Blob store; local development also appends telemetry/interactions.jsonl. Wallets are represented only by keyed, pseudonymous identifiers; raw wallet and transaction hashes are excluded.

Part of the Grokbot Autonomous Revenue system (ranked-playbooks.md).