# Crossdeck Docs

> Crossdeck is one SDK for revenue, analytics, and errors across web, server, and mobile — install and get a verified signal in ~10 minutes. Every page below is also available as clean markdown at its `index.md` twin (e.g. `/docs/quickstart-web/index.md`).

## Getting started

- [How identity works — read this first](https://cross-deck.com/docs/how-identity-works/)
- [Create a project](https://cross-deck.com/docs/create-a-project/)
- [Web SDK quickstart · 10 min](https://cross-deck.com/docs/quickstart-web/)
- [iOS (Swift) quickstart · 10 min](https://cross-deck.com/docs/quickstart-ios/)
- [Install with AI — generated prompts](https://cross-deck.com/docs/install-prompts/)
- [API keys & authentication](https://cross-deck.com/docs/api-keys/)
- [Migrate an existing product](https://cross-deck.com/docs/migration/)
- [Changelog — every SDK release, one feed](https://cross-deck.com/docs/changelog/)
- [Cookie policy template](https://cross-deck.com/docs/cookie-policy-template/)

## SDKs & CLI

- [Web SDK reference](https://cross-deck.com/docs/web-sdk/)
- [Node SDK reference](https://cross-deck.com/docs/node-sdk/)
- [Swift SDK reference (iOS / macOS / tvOS / watchOS)](https://cross-deck.com/docs/swift-sdk/)
- [React Native SDK reference](https://cross-deck.com/docs/react-native-sdk/)
- [CLI reference](https://cross-deck.com/docs/cli/)
- [Web SDK error codes](https://cross-deck.com/docs/web-sdk/error-codes/)
- [Event delivery & data durability](https://cross-deck.com/docs/sdk-event-durability/)
- [API reference](https://cross-deck.com/docs/api-reference/)
- [Prism — the intelligence layer (ask Prism: AI connector + API)](https://cross-deck.com/docs/prism/)
- [Prism — the API reference](https://cross-deck.com/docs/reporting-api/)
- [Prism — security & trust](https://cross-deck.com/docs/outbound-api-security/)
- [Limits & quotas](https://cross-deck.com/docs/limits-and-quotas/)

## Bolt-ons & guides

- [Contracts — structural guarantees, claim · code · test](https://cross-deck.com/docs/contracts/)
- [How we verify and identify users](https://cross-deck.com/docs/identity-verification/)
- [Identify users (auth bridges)](https://cross-deck.com/docs/identify-users/)
- [Track custom events](https://cross-deck.com/docs/track-events/)
- [Entitlements & gating](https://cross-deck.com/docs/entitlements/)
- [Access control & roles](https://cross-deck.com/docs/access-control/)
- [Server-side event ingestion](https://cross-deck.com/docs/server-events/)
- [Rail webhooks (inbound)](https://cross-deck.com/docs/rail-webhooks/)
- [Receiving Crossdeck webhooks (outbound)](https://cross-deck.com/docs/webhooks-receive/)
- [Delete a user’s data (GDPR)](https://cross-deck.com/docs/delete-a-users-data/)
- [Workspace operations](https://cross-deck.com/docs/workspace-operations/)

## Payment rails

- [Connect App Store](https://cross-deck.com/docs/connect-apple/)
- [One-off purchases on Apple](https://cross-deck.com/docs/apple-one-off-purchases/)
- [Connect Google Play](https://cross-deck.com/docs/connect-google/)
- [Connect Stripe](https://cross-deck.com/docs/connect-stripe/)
- [Sandbox vs production](https://cross-deck.com/docs/sandbox-vs-production/)

## Integrations

- [Connect HubSpot](https://cross-deck.com/docs/connect-hubspot/)
- [Connect Pipedrive](https://cross-deck.com/docs/connect-pipedrive/)
- [Connect Resend](https://cross-deck.com/docs/connect-resend/)

## Products & entitlements

- [Products — mirrored from your rail](https://cross-deck.com/docs/products/)
- [Entitlements & gating](https://cross-deck.com/docs/entitlements/)
- [Pay once, unlock forever](https://cross-deck.com/docs/pay-once-unlock-forever/)
- [Map products → entitlements](https://cross-deck.com/docs/products/index.html#mapping)
- [Migrate to Crossdeck](https://cross-deck.com/docs/migration/)

## Revenue intelligence

- [MRR](https://cross-deck.com/docs/revenue-intelligence/)
- [Refunds and disputes](https://cross-deck.com/docs/revenue-intelligence/index.html#refunds-disputes)
- [At-risk revenue](https://cross-deck.com/docs/revenue-intelligence/index.html#at-risk)

## Workbench

- [Workbench overview](https://cross-deck.com/docs/workbench/)
- [Rail Ledger](https://cross-deck.com/docs/workbench/rail-ledger/)
- [Identity Explorer](https://cross-deck.com/docs/workbench/identity-explorer/)
- [The round-trip test](https://cross-deck.com/docs/workbench/identity-explorer/index.html#test)

## Analytics

- [Events and properties](https://cross-deck.com/docs/track-events/)
- [Identify users and reset](https://cross-deck.com/docs/identify-users/)
- [Internal traffic](https://cross-deck.com/docs/internal-traffic/)

## Errors

- [Buckets OSS — where your reads go](https://cross-deck.com/docs/buckets/)
- [Cost alerts — paged before the bill](https://cross-deck.com/docs/buckets/index.html#alerts)
- [Capture an error](https://cross-deck.com/docs/capture-an-error/)
- [Global handlers and auto-capture](https://cross-deck.com/docs/capture-an-error/index.html#automatic)
- [Plain-English impact summaries](https://cross-deck.com/docs/alerts-and-triage/index.html#summaries)
- [Breadcrumbs and source maps](https://cross-deck.com/docs/source-maps/)
- [Source maps — AI-assisted setup](https://cross-deck.com/docs/source-maps/ai-setup/)
- [Slack and email alerts](https://cross-deck.com/docs/alerts-and-triage/)
- [What no SDK can capture](https://cross-deck.com/docs/what-no-sdk-can-capture/)
- [Observing App Review sessions](https://cross-deck.com/docs/guides/app-review-sessions/)

## Support

- [Billing & plans](https://cross-deck.com/docs/billing/)
- [Troubleshooting & FAQ](https://cross-deck.com/docs/troubleshooting/)
- [Delete a user’s data (GDPR)](https://cross-deck.com/docs/delete-a-users-data/)
- [Contact us](https://cross-deck.com/contact/)