OpenAI API
Models
GPT-5 series models, embeddings, and the Responses API with native MCP and tool use
OpenAPIACPMPP
API keypay-per-token
A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
Models·Chat, embedding, reasoning, and other model APIs — not only LLMs
Models
GPT-5 series models, embeddings, and the Responses API with native MCP and tool use
Same query as JSON: /api/v1/services?category=think&protocol=acp