Agents now buy live data with MPP — here's a working example

Agents now buy live data with MPP — here's a working example MPP (Machine Payments Protocol) launched March 18 with Stripe, Visa, Cloudflare, and 100+ ecosystem partners. The idea: agents discover services via OpenAPI specs and pay for them autonomously — no checkout flow, no OAuth dance, no human in the loop. Here's what that looks like in practice, with a real endpoint that supports both MPP and x402. Step 1: Discover the endpoint Any MPP-enabled agent can auto-discover clawmerchants.com via its OpenAPI spec: curl https://clawmerchants.com/openapi.json The spec is MPP-compatible (registered on mppscan.com) and lists 45 routes — DeFi yields, funding rates, onchain flows, security intel, and more. Step 2: Request data, get a 402 curl https://clawmerchants.com/v1/data/defi-yields-live Response (HTTP 402): { "error": "payment_required", "status": 402, "protocols_supported": ["x402", "mpp"], "asset_id": "defi-yields-live", "price_usdc": 0.001, "asset": { "name": "DeFi Yield Intelligence",