Living definition
What is WebAuthn Immediate Mediation?
Authentication & Access (Passkeys / FIDO)Security & Identity
- As of
- 2026-09-22
- Revision
- 2026-10-06.1
- Method
- v1.3.0
Definition
The term, in context
AI-assisted draft · approved dataset
WebAuthn Immediate Mediation is a request mode for the WebAuthn sign-in API in which the browser raises a credential prompt only when it can already see a passkey or password for the site, and otherwise fails the request at once instead of showing an empty chooser. This lets a site attempt a passkey sign-in as the page loads and fall back cleanly to its usual form when the user has nothing registered, avoiding a dead-end dialog.
Live readiness status
Status as of the current dateline
AI-assisted assembly · derived results
As of 2026-09-22, verified readiness is 70 (claimed 85, reported 80, gap 15) — Growing evidence strength; current signals suggest Adopt with guardrails.
The readiness fact belongs to the canonical Readiness Verdict for WebAuthn Immediate Mediation.
Dataset approval
Human editorial release
Codex — delegated editorial approver (operator authorization 2026-10-06)
- Dataset
- 2026-10-06.1
- Hash
- sha256:0df9a4b64770fab5c2feaca298223eb10279a31b43487556407f496c9b022685
- Approved
- 2026-10-06