# Xident

> Age and identity verification with a "verify once, access everywhere" model.
> Integration is backend-only: your server creates a session with a secret key,
> redirects the user to a hosted widget, then reads a verdict. There is no
> client-side SDK to install.

Xident returns a verdict your code reports. It never asks you to infer one:
gate access on the `verified` field, not on document contents or anything a
user supplied.

## Start here

- [Quick start](https://docs.xident.io/getting-started): the two-call backend integration
- [Core concepts](https://docs.xident.io/concepts): sessions, tokens, verification paths, webhooks
- [Building with AI agents](https://docs.xident.io/agents): agent skill and MCP servers
- [API reference](https://docs.xident.io/api-reference): every endpoint
- [OpenAPI spec](https://docs.xident.io/openapi.json): machine-readable, generated from the running routes

## Integration

- [SDK integration](https://docs.xident.io/integration)
- [Node.js](https://docs.xident.io/sdks/nodejs) · [Python](https://docs.xident.io/sdks/python) · [Go](https://docs.xident.io/sdks/go) · [PHP](https://docs.xident.io/sdks/php)
- [Mobile apps](https://docs.xident.io/sdks/mobile): open the verify URL, keep init and result on your backend

## Login with Xident (OAuth)

- [Overview](https://docs.xident.io/oauth) · [Authorization flow](https://docs.xident.io/oauth/authorization-flow) · [Scopes and claims](https://docs.xident.io/oauth/scopes-and-claims)

## Optional

- [Dashboard guide](https://docs.xident.io/dashboard-guide)
- [Changelog](https://docs.xident.io/changelog): the v1 result and webhook shapes are frozen; changes are additive-only
- [Full text for LLMs](https://docs.xident.io/llms-full.txt)