requires_input or failed are not errors: they are successful responses with an unpriced Receipt.
Envelope shape
Success (200 or 201):
Error codes
Quote routes
Book authoring and publication routes
Business membership and branding routes
API key, webhook, and log routes (Workspace management)
These routes authenticate the Workspace session and authorize against Workspace roles.Quote outcomes are not errors
A created Quote always returns201 with a Receipt, even when the Receipt is unpriced:
Handle outcomes in your integration logic and reserve error handling for the envelope above.
The request ID
Every response includesx-request-id. Quote creates also echo it as the Intent and Receipt requestCorrelationId, so a customer-facing Quote can always be traced back to the exact HTTP request. Include it in support reports.