authio (Python)

Part of Authio Lobby — Authio's drop-in passwordless authentication. Learn more at https://authio.com/products/lobby.

Authio Python server SDK. Multi-org-first auth for B2B Python apps (FastAPI, Django, Flask, Litestar, etc.).

What's new — 2026-05-23 WorkOS-parity sprint

Four new product surfaces shipped on the Authio API (authio_proto). Python idiomatic bindings for all four are on the next-release roadmap; Flask snippets for the HMAC verifier are already published on the docs:

• Embeddable widgets — drop-in React surface; mint widget tokens from any Python BFF via POST /v1/widget-tokens. See docs.authio.com/widgets/overview.
• Synchronous Actions — customer-hosted HTTPS webhook with HMAC-SHA256 envelope. Python (Flask) signature verification on docs.authio.com/actions/signature-verification.
• Dynamic Client Registration + CIMD — RFC 7591 / 7592 + MCP-spec 2025-11-25 preferred path. See docs.authio.com/guides/mcp-integration.
• Roles + permissions on the JWT — the existing verify_session() path now exposes claims["roles"] (str in single-role mode, list in multi-role) and claims["permissions"] (always list). See docs.authio.com/concepts/roles-and-permissions.

Install

pip install authio

Quick start

from authio import Authio

client = Authio(api_key="sk_live_...")
memberships = client.list_memberships("user_01HX...")

License

MIT