Authentik

OAuth 2.0 provider for Authentik.

Also see the OAuth 2.0 with PKCE guide.

Initialization

The baseURL parameter is the full URL where the Authentik instance is hosted. Pass the client secret for confidential clients.

import * as arctic from "arctic";

const baseURL = "https://my-app.com/authentik";
const authentik = new arctic.Authentik(baseURL, clientId, clientSecret, redirectURI);
const authentik = new arctic.Authentik(baseURL, clientId, null, redirectURI);

Create authorization URL

import * as arctic from "arctic";

const state = arctic.generateState();
const codeVerifier = arctic.generateCodeVerifier();
const scopes = ["openid", "profile"];
const url = authentik.createAuthorizationURL(state, codeVerifier, scopes);

Validate authorization code

validateAuthorizationCode() will either return an OAuth2Tokens, or throw one of OAuth2RequestError, ArcticFetchError, UnexpectedResponseError, or UnexpectedErrorResponseBodyError. Actual values returned by Authentik depends on your configuration and version.

import * as arctic from "arctic";

try {
	const tokens = await authentik.validateAuthorizationCode(code, codeVerifier);
	const accessToken = tokens.accessToken();
	const accessTokenExpiresAt = tokens.accessTokenExpiresAt();
	const refreshToken = tokens.refreshToken();
} catch (e) {
	if (e instanceof arctic.OAuth2RequestError) {
		// Invalid authorization code, credentials, or redirect URI
		const code = e.code;
		// ...
	}
	if (e instanceof arctic.ArcticFetchError) {
		// Failed to call `fetch()`
		const cause = e.cause;
		// ...
	}
	// Parse error
}

OpenID Connect

Use OpenID Connect with the openid scope to get the user's profile with an ID token or the userinfo endpoint. Arctic provides decodeIdToken() for decoding the token's payload.

const scopes = ["openid"];
const url = authentik.createAuthorizationURL(state, codeVerifier, scopes);

import * as arctic from "arctic";

const tokens = await authentik.validateAuthorizationCode(code, codeVerifier);
const idToken = tokens.idToken();
const claims = arctic.decodeIdToken(idToken);

Refresh access tokens

Use refreshAccessToken() to get a new access token using a refresh token. This method also returns OAuth2Tokens and throws the same errors as validateAuthorizationCode().

import * as arctic from "arctic";

try {
	const tokens = await authentik.refreshAccessToken(refreshToken);
} catch (e) {
	if (e instanceof arctic.OAuth2RequestError) {
		// Invalid authorization code, credentials, or redirect URI
	}
	if (e instanceof arctic.ArcticFetchError) {
		// Failed to call `fetch()`
	}
	// Parse error
}

Revoke tokens

Use revokeToken() to revoke a token. This can throw the same errors as validateAuthorizationCode().

try {
	await authentik.revokeToken(token);
} catch (e) {
	if (e instanceof arctic.OAuth2RequestError) {
		// Invalid authorization code, credentials, or redirect URI
	}
	if (e instanceof arctic.ArcticFetchError) {
		// Failed to call `fetch()`
	}
	// Parse error
}