# Attribution notice

`pi-claude-plan` adapts request transformations, OAuth behavior, fingerprint constants, and related implementation ideas from:

- **Project:** `@ex-machina/opencode-anthropic-auth`
- **Repository:** https://github.com/ex-machina-co/opencode-anthropic-auth
- **Upstream release this adaptation is based on:** [`v1.8.1`](https://github.com/ex-machina-co/opencode-anthropic-auth/releases/tag/v1.8.1)
- **Copyright:** © 2026 Ex Machina
- **License:** MIT

The Pi-specific provider registration, streaming integration, prompt handling, credential isolation, and tests are adaptations for the Pi coding agent. This repository is independently maintained and is not affiliated with or endorsed by Ex Machina or Anthropic.