> For a complete page index, fetch https://developer.close.com/llms.txt

# Close Developer Platform

Whether you're a [Close](https://close.com) customer automating your sales process or a partner building an integration, the Close Developer Platform gives everything you or your AI agents need.

#### [REST API Reference](/api)

Full endpoint docs with schemas, examples, and an interactive API explorer.

#### [Authentication](/api/overview/api-key-authentication)

API keys for scripts or OAuth 2.0 for user-facing integrations.

#### [Webhooks & Events](/api/resources/webhooks)

Real-time event notifications and a 30-day event log.

#### [MCP Server](/mcp)

Model Context Protocol for AI agents.

#### [Build an Integration](/integrations)

Create an OAuth app, connect your product, and get listed.

#### [API Clients](/api/overview/api-clients)

Community libraries for Python, Node.js, Ruby, PHP, Go, and more.

#### [API Changelog](/api/overview/changelog)

Latest API updates and deprecations.

#### [Browse 100+ Integrations ↗](https://close.com/integrations)

Explore the full directory of apps and tools that connect with Close.

## Use cases

* **Push in CRM data** — Push leads, contacts, activities, and custom data into Close from your website or other systems via the [REST API](/api).
* **Sync data out** — Stream changes with [webhooks](/api/resources/webhooks), query the [event log](/api/resources/events), or pull [reporting metrics](/api/resources/reporting) and pipeline data into your BI tools, data warehouse, or design custom dashboards & reports.
* **Automate outreach** — Manage workflows with [sequences](/api/resources/sequences) or [bulk actions](/api/resources/bulk-actions/email), or send email/SMS programmatically.
* **Publish an integration** — Build for many Close customers with [OAuth](/integrations) and get listed in the [integrations directory](https://close.com/integrations/).
* **Power AI agents** — Give Claude, ChatGPT, Cursor, and other tools direct access to Close data via the [MCP server](/mcp) — no code required.

## Getting help

Our [Support Team](mailto:support@close.com) can assist Close customers with any questions about the API.

Implementing something cool or want to chat about where our API is going? [Schedule a call](https://calendly.com/joe-close/api-chat) with Joe Kemp, VP of Engineering.