# Developers (https://www.getfounderhq.com/docs/developers)

Each product keeps its own SDK and API pages next to its guides. This page
is the map across all of them.

## Keys

Every SDK and API call carries a key. A key belongs to one brand.

| Key | Looks like | Where it runs |
| --- | --- | --- |
| Publishable key | `fhq_pk_XXXX` | Browsers and shipped mobile apps |
| Secret key | `fhq_sk_XXXX` | Your server only |

Create and revoke keys in [Settings → API Keys](https://app.getfounderhq.com/?openSettings=api-keys). FounderHQ
shows the full key once, when you create it.

## SDKs

| You are building | Install | Reference |
| --- | --- | --- |
| A website | A script tag or `@founderhq/events` | [Web SDK](/analytics/sdks/web) |
| A React Native or Expo app | `@founderhq/events-react-native` | [React Native SDK](/analytics/sdks/react-native) |
| An iOS app | Swift Package Manager or CocoaPods | [iOS SDK](/analytics/sdks/ios) |
| An Android app | `com.getfounderhq:events` | [Android SDK](/analytics/sdks/android) |
| A Node server | `@founderhq/events-node` | [Node SDK](/analytics/sdks/node) |
| A Journey inside your product | `@founderhq/journeys` and the native wrappers | [Embed on the web](/journeys/embed-on-the-web), [Mobile](/journeys/mobile) |

## HTTP APIs

| API | What it does |
| --- | --- |
| [Analytics API](/analytics/api-reference/ingestServerEvents) | Send events, send revenue, and mint attribution tokens. |
| [Journeys API](/journeys/api-reference/getPublishedJourney) | Read a published Journey and record its answers. |
| [Send API](/sequences/send-api) | Send one message to one contact from your server. |
| [Enrollment API](/sequences/start-a-sequence#from-your-own-server) | Put a person into a sequence from your server. |
| [Event protocol](/analytics/protocol-reference) | The wire format, for writing your own client. |

## For coding agents

<Cards>
  <Card title="MCP server" href="/developers/ai-resources/mcp-server">
    Let your agent search and read these docs while it works.
  </Card>
  <Card title="llms.txt and markdown" href="/developers/ai-resources/llms-and-markdown-routes">
    The whole site as one file, and any page as Markdown.
  </Card>
</Cards>