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

说明与用途

我们检查了2300多个x402/MPP付费端点，发现只有63％真正可用，提升了AI代理的可靠性。

问题

Many services listed as payable via x402/MPP/ACP are dead or outdated, causing AI agents to waste calls on non‑functional endpoints.

结果

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

工作流

• 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.

证据

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

来源