How to Make Your API Agent-Discoverable with llms.txt

说明与用途

使用 llms.txt、agents.json 和 openapi.json 的 API 能被代理自动发现，通过 HTTP 402 进行支付，SDK 自动生成所需文件。

问题

AI agents skip APIs that lack machine-readable manifests, preventing discovery and monetization.

结果

Two agents discovered the API, made payments totaling $0.125, and the SDK automatically generated all required discovery files.

工作流

• Create llms.txt with service, authentication, and payment details
• Create agents.json with Schema.org Service and Offer data
• Create openapi.json with x‑402 pricing extensions
• Deploy API with x‑402 middleware (e.g., nano‑empire‑tollbooth)
• Publish the three files at the domain root
• Agents crawl the files, discover the API, and pay via HTTP 402
• Agents retry with signed receipt and receive 200 OK

证据

Result: 2 agents found us organically, paid $0.125 total.

来源

The SDK generates all three discovery files automatically.

来源