# CleverReach Developers

> CleverReach is an email marketing software provider. The Developer Platform provides REST APIs, Webhooks, and developer tools (SDKs, MCP server) to integrate applications with the CleverReach ecosystem.

Important notes:

- Prefer OAuth2 authentication flows over Personal Access Tokens for non-internal scripts.
- Use Core API (v3) for Receiver, Form, and Mailing CRUD operations.
- Use Flows API exclusively for complex automation rules (THEA).

## Developer Onboarding & Account

- [Create Account](https://www.cleverreach.com): Sign up for a CleverReach account.
- [Authentication Guide](/docs/guides/authentication/): OAuth2 and API Token authentication documentation.

## Integrations & Ecosystem

- [Integrations Directory](https://www.cleverreach.com/en/integrations/): Ready-to-use plugins (Shopify, WooCommerce, Shopware, WordPress, etc.).

## AI & Developer Tools

- [Model Context Protocol (MCP) Server](/docs/guides/developer-tools/mcp-server): Add CleverReach capabilities to AI agents (Cursor, Claude).
- [PHP SDK](/docs/guides/developer-tools/php-sdk): Official CleverReach PHP SDK documentation.

## Core Documentation & API

- [Guides & Quickstart](/docs/guides/): Developer Guides covering Webhooks, Double Opt-In, and Authentication.
- [Core API v3 OpenAPI Spec](https://rest.cleverreach.com/v3/explorer/swagger.json): Machine-readable OpenAPI 3.0 specification for the main REST API.
- [Core REST API (v3) Docs](/docs/api/main/): Human-readable endpoints reference for Core API.
- [Flows API OpenAPI Spec](https://rest.cleverreach.com/flow/swagger.json): Machine-readable OpenAPI specification for the THEA marketing automation system.
- [Flows API Docs](/docs/api/flows/): Human-readable endpoints reference for Flows API.
- [Webhooks](/docs/guides/webhooks/): Documentation on consuming real-time event notifications.
- [Changelog](/docs/changelog/): Release notes, deprecations, and API updates.

## Optional

- [Pricing & Subscriptions](https://www.cleverreach.com/en/pricing/): Account limits and send volumes.
- [Terms & Conditions](https://www.cleverreach.com/en/terms-of-service): Terms of service.
- [Privacy Policy](https://www.cleverreach.com/en/privacy-policy): Data protection and privacy compliance.
- [Legal Information](https://www.cleverreach.com/en/legal-information): Imprint and legal notices.