Sign In With Google Web
google/skills/skills/identity/sign-in-with-google-webby googlec6c7e67107f02e3423df8481272f296bbe61902aNo license21K starsListed Oct 9, 2026Updated Oct 9, 2026Repository updated today
Implement, configure, and secure Sign In With Google (SiwG) using Google Identity Services (GIS / `https://accounts.google.com/gsi/client`) across web architectures. Use when creating Google sign-in buttons, implementing Google One Tap with FedCM, integrating GIS in React/Next.js/Angular/HTML, verifying ID tokens on backend runtimes (Python/Node.js/Go/Java), enforcing Google Workspace domain restrictions (`hd`), securing client-side ID tokens via WebCrypto nonces or encrypted IndexedDB, embedding in cross-origin iframes via the Intermediate Iframe API (`https://accounts.google.com/gsi/intermediate`), configuring Content Security Policy (CSP), COOP, and Permissions Policy (`identity-credentials-get`) headers, or handling sign-out and revocation. Don't use for legacy Google Sign-In (`gapi.auth2`), Google Cloud IAM service accounts, or Android/iOS native Credential Manager.
Only the file list is public. File contents are available once the skill is installed in a workspace.
| Path | Size | Type |
|---|---|---|
| references/bff_fastapi_verification.md | 3.4 KB | text/markdown |
| references/in_memory_spa_nonce.md | 3.1 KB | text/markdown |
| references/intermediate_iframe.md | 1.9 KB | text/markdown |
| references/offline_pwa_encryption.md | 3.9 KB | text/markdown |
| references/tmb_login_uri_redirect.md | 2.7 KB | text/markdown |
| SKILL.md | 17.1 KB | text/markdown |
Source and attribution
Source:google/skillsinskills/identity/sign-in-with-google-webat commitc6c7e67
License: No license
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