Errors - Cortex Docs

Every failure is application/problem+json:

{
  "type": "https://docs.cortex.foundation/problems/not_found",
  "title": "Not found",
  "status": 404,
  "code": "not_found",
  "detail": "No conversation with id cnv_x.",
  "request_id": "req_…"
}

code is the contract. Mirror: @cortex/api-types ErrorCode.
title / detail are English, for logs and humans reading raw JSON. The web app renders catalog copy. Three codes may show detail as a secondary line: validation_failed, bad_request, invalid_state.
type is dereferenceable: Problem catalog.
request_id is always present and safe to show.

User-facing detail names a product surface, never a vendor (“The audio service is temporarily unavailable.”, not a subprocessor’s name). Full catalog: Problems.

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