# Claude Fable 5 API via PiAPI

Claude Fable 5 is a PiAPI landing-page product for autonomous execution, coding, vision, and complex reasoning.

Base URL: https://api.piapi.ai
Authentication: send your PiAPI API key in the X-API-Key header.
API key: https://piapi.ai/workspace/key

## Documentation

- https://piapi.ai/docs/overview

## Runtime contract

The catalog currently has no published runtime contract for this product. Do not infer a task_type or endpoint from the marketing page; use the linked documentation for the current API contract.

## Operational notes

- PiAPI uses pay-as-you-go access and new accounts receive trial credits.
- The page describes OpenAI-compatible integration, but the exact model identifier and request schema must be confirmed in the documentation before production use.