> ## Documentation Index > Fetch the complete documentation index at: https://developers.1-funnel.org/llms.txt > Use this file to discover all available pages before exploring further. # Introduction > What the 1Funnel developer portal is for. The 1Funnel developer portal is the public documentation site for third-party integrations. Use it to understand how an approved integration is structured, where the API reference will live, and how changes are published. The External Integration API is not generally available. Nothing on this page is a production endpoint, credential, or response schema. ## What you will find here * Getting started material for integrators * Guides, once a capability has an approved public contract * An API reference generated from approved OpenAPI documents * Webhook documentation backed by validated AsyncAPI documents * SDK status, support, and the public changelog ## What this portal does not publish * Internal service APIs * Merchant Portal APIs * Private hostnames, infrastructure layout, or operational procedures * Credentials, API keys, or customer data * Contracts that have not been approved for external use Authentication for API consumers is provided by the 1Funnel Identity Platform. This portal documents the approved developer experience. It does not issue credentials. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.