generated: '2026-07-20'
method: searched
source: https://docs.mindlogic.ai/docs/general/api-gateway
docs: https://docs.mindlogic.ai/docs/general/api-gateway/getting-started/overview
description: >-
  Cross-cutting request/response semantics for the Mindlogic FactChat API
  Gateway — a unified LLM proxy that presents OpenAI-, OpenAI-Responses- and
  Anthropic-compatible surfaces over OpenAI, Anthropic, Google Gemini, xAI and
  Perplexity models.
base_url: https://factchat-cloud.mindlogic.ai/v1/gateway
authentication:
  style: api-key (header)
  headers: ["Authorization: Bearer <key>", "x-api-key: <key>"]
  ref: authentication/mindlogic-authentication.yml
compatibility:
  openai_chat_completions: true      # /chat/completions/ — 100% OpenAI SDK compatible per docs
  openai_responses: true             # /responses/
  anthropic_messages: true           # /claude/v1/messages/
  migration: "Point an existing OpenAI/Anthropic SDK at the base URL; no code changes required."
streaming:
  supported: true
  transport: server-sent-events
  request_param: stream (boolean, default false)
  usage_in_stream: stream_options to include usage in the final chunk
versioning:
  scheme: uri-path
  current: v1
  example_prefix: /v1/gateway
idempotency:
  supported: false
  note: No idempotency-key header is documented for the Gateway.
pagination:
  supported: false
  note: No list endpoints paginate; /models/ returns the full accessible model list.
rate_limiting:
  signal: HTTP 429 "Rate limit exceeded"
  guidance: Implement exponential backoff on 429.
metering:
  unit: credits
  balance_endpoint: GET /v1/gateway/credits/
  usage_headers: ["X-Input-Tokens", "X-Output-Tokens"]   # on /audio/speech/
  exhausted_error: 402 "Credit balance exhausted"
error_envelope:
  gateway: '{"detail": {"code": <int>, "message": "<type> - <message>"}}'
  validation: '{"detail": [{"loc": [...], "msg": "...", "type": "..."}]}'
  ref: errors/mindlogic-error-codes.yml
async_operations:
  pattern: operation_id polling
  applies_to: [image generation (Fal/Replicate), video generation]
  poll: GET .../{operation_id}/
cross_links:
  errors: errors/mindlogic-error-codes.yml
  authentication: authentication/mindlogic-authentication.yml
  conformance: conformance/mindlogic-conformance.yml