generated: '2026-09-07'
method: searched
source: https://docs.toapis.com/llms.txt
notes: >-
  ToAPIs publishes no OpenAPI, so conformance is read from documented compatibility
  claims. As an AI-model gateway its market's de-facto interface standards are the
  OpenAI and Anthropic API shapes, which the provider explicitly declares. No formal
  standards-body conformance (OAuth2/OIDC, RFC 9457, JSON:API, etc.) is claimed or
  observed, and no compliance certifications (SOC 2 / ISO 27001) are published.
conformance:
  - id: openai-chat-completions
    conforms: true
    evidence: >-
      https://docs.toapis.com/docs/cn/api-reference/chat/chat.md — "兼容 OpenAI
      Chat Completions API 格式" (OpenAI-compatible Chat Completions at POST
      /v1/chat/completions, including SSE streaming and vision content blocks).
  - id: openai-responses-api
    conforms: true
    evidence: >-
      https://docs.toapis.com/docs/cn/api-reference/chat/responses.md — OpenAI
      Responses API format with function calling, built-in tools and server-side
      multi-turn context.
  - id: anthropic-messages-api
    conforms: true
    evidence: >-
      https://docs.toapis.com/docs/cn/api-reference/chat/messages.md — native
      Anthropic Messages API format for Claude-series models.
  - id: openai-models-api
    conforms: true
    evidence: >-
      https://docs.toapis.com/docs/cn/api-reference/chat/list-models.md — GET
      /v1/models "兼容 OpenAI Models API".
  - id: rfc9457
    conforms: false
    evidence: >-
      Errors use the OpenAI-style {"error":{"code","message"}} envelope, not
      application/problem+json (see errors/toapis-problem-types.yml).
  - id: oauth2
    conforms: false
    evidence: >-
      Bearer API keys only; /.well-known/oauth-authorization-server and
      /openid-configuration return 404 on every host (see
      well-known/toapis-well-known.yml).
  - id: idempotency
    conforms: false
    evidence: No Idempotency-Key mechanism is documented on any write endpoint.