1 agent-payable API. Every listing carries a tested call recipe - endpoint, auth shape, pricing, and known gotchas - on its detail page. cm-record.ai ↗
One paid call on cm-record.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-record.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.