Error Codes

All error responses use a consistent format:

{ "error": { "code": "not_found", "message": "Conversation not found" } }

Error Reference

Status	Code	Description
`400`	`validation_error`	Invalid request parameters or body
`401`	`unauthorized`	Missing or invalid API key
`403`	`forbidden`	Insufficient plan tier for this endpoint
`404`	`not_found`	Resource not found
`429`	`rate_limited`	Rate limit exceeded
`429`	`ai_limit_exceeded`	Monthly AI generation limit reached
`500`	`internal_error`	Unexpected server error

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