← is-real-biz

KYB API for AI agents

is-real-biz is a Know Your Business (KYB) API purpose-built for AI agents. It exposes a single tool (check_business) over MCP, OpenAPI, and a /check HTTP endpoint. Agents call it with a domain string and get back a structured verdict, trust score, and explainable signals — all in under 2 seconds. Payment is per-call ($0.05) via x402 stablecoin or prepaid API key, with 50 free calls on signup.

Try it now

curl 'https://is-real-biz.is-real-biz.workers.dev/check?domain=stripe.com'

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Step-by-step

  1. Discover via MCP Registry. is-real-biz is published in the official Model Context Protocol Registry as io.github.Smart-link-t/is-real-biz.
  2. Connect over Streamable HTTP. Point your MCP client at https://is-real-biz.is-real-biz.workers.dev/mcp.
  3. Call check_business. Pass {domain: "stripe.com"} or {domains: [...]} for batched verification (up to 50 in one call).
  4. Pay autonomously. Agents using x402-compatible clients (wrapFetchWithPayment, x402Client) auto-pay USDC and retry — no human in the loop.

Frequently asked

What MCP tools are exposed?

check_business (single domain) and check_business_batch (up to 50 domains in parallel). Both return verdict, score, confidence, signals, reasoning.

Does it support agent-to-agent payment protocols?

Yes. is-real-biz publishes an A2A agent card at /.well-known/agent.json and an agents.json (Wildcard spec) at /.well-known/agents.json, plus full x402 v1 payment requirements.

Is the data fresh?

Yes — every check fetches WHOIS, SSL, and live homepage content at request time, with sub-second caching at the edge for repeat lookups.

Which networks settle x402 payments?

Base Sepolia (test) and Base mainnet, settled through PayAI facilitator (zero-signup, Bazaar-listed).

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