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conformance · v139

v139 · web-authentication-immediate-ui-mode — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://github.com/w3c/webauthn/pull/2291 chromestatus: #5164322780872704 generated 2026-06-01T08:13:31Z by conformance-author-v1-subagent
0
pass
0
fail
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blocked
6
total
id contract kind verdict detail
credentials-container-exposed navigator.credentials is exposed (the CredentialsContainer where get() lives). exists
credentials-get-method navigator.credentials.get is exposed as a function — the entry point for the immediate UI mode. typeof
public-key-credential-exposed PublicKeyCredential is exposed; the WebAuthn type returned by immediate UI mode. exists
public-key-credential-is-conditional-mediation-available PublicKeyCredential.isConditionalMediationAvailable is exposed; the conditional mediation path remains available alongside immediate UI. script
credentials-get-accepts-mediation-immediate navigator.credentials.get({mediation:'immediate', publicKey:...}) returns a Promise — the API accepts the new 'immediate' mediation value. spec ↗ script
password-credential-still-exposed PasswordCredential is exposed; immediate UI mode covers both passkeys and passwords known to the browser. script