SynOI

API reference

One protocol. Five surfaces.

The Gateway speaks Anthropic protocol, OpenAI protocol, and a native SynOI REST surface. Webhooks for HITL round-trips. SDKs for TypeScript and Python.

Coming soon

Generated API reference ships from the OpenAPI spec when the public docs site launches. Until then, the schemas live in the open-source repos and the receipt format is documented end-to-end in the Decision Receipt white paper.

  • Anthropic-compatible: POST /anthropic/v1/messages, receipt minted on response
  • OpenAI-compatible: POST /v1/chat/completions, receipt minted on response
  • Native: POST /receipts, query and verify any receipt by ID
  • Webhooks: HMAC-SHA256 signed, 5-minute anti-replay window
  • SDKs: @synoi/sdk (TypeScript), synoi-python (planned)