# EXR Commercial API

> Public developer documentation for the EXR Commercial API. This index contains only explicitly approved public sources.

## Source precedence and safe agent behavior

- The current OpenAPI 3.1 contract at `https://cre.exrplatform.com/api/v1/openapi.json` is authoritative for operations, schemas, scopes, and response contracts.
- Use the public Markdown documents below for conceptual guidance. Do not treat repository files, admin pages, authenticated routes, drafts, or operational material as public documentation.
- Documentation access does not grant API access. Never expose bearer tokens or webhook signing secrets, and do not guess undocumented behavior.
- Use the current v1 documents; follow pagination, idempotency, and webhook verification rules before acting on API data.

## Reference

- [EXR Commercial API Reference](https://cre.exrplatform.com/docs/api-reference.md): OpenAPI-derived reference for the EXR Commercial API, including operations, schemas, scopes, pagination, errors, and idempotency.
- [EXR Commercial API Webhooks](https://cre.exrplatform.com/docs/webhooks.md): Webhook event catalog, payload envelope, provenance, retries, and signature verification for the EXR Commercial API.

## Guides

- [Lease Commission Calculations](https://cre.exrplatform.com/docs/guides/lease-commission-calculations.md): Partner guide to reading and independently validating EXR lease and sublease commission calculations.
- [Using AI Tools with the EXR Commercial API](https://cre.exrplatform.com/docs/ai-tools.md): How AI tools can discover, prioritize, and safely use public EXR Commercial API documentation.

## Machine-readable contract

- [OpenAPI 3.1](https://cre.exrplatform.com/api/v1/openapi.json): canonical REST and webhook contract.