We probed 2,300+ x402/MPP payable endpoints. Here’s what "payable" actually means in practice

Описание и применение

Мы проверили более 2300 платных конечных точек x402/MPP и выяснили, что только 63 % из них действительно работают, что повышает надёжность AI‑агентов.

Задача

Many services listed as payable via x402/MPP/ACP are dead or outdated, causing AI agents to waste calls on non‑functional endpoints.

Результат

Out of 2,328 indexed services, 1,472 (63%) were confirmed live, improving agent reliability and reducing wasted calls.

Рабочий процесс

• 1. Build an index of all x402/MPP/ACP endpoints from various sources.
• 2. Schedule periodic HTTP probes for each endpoint.
• 3. Verify responses: expect HTTP 402 with a payment challenge or a valid x402/MPP challenge body.
• 4. Mark endpoints as "live" only if they pass the probe.
• 5. Expose the live list via an MCP server for agents to query.

Доказательства

Right now: 2,328 services indexed, only 1,472 (~63%) actually live.

Источник