v136 · identity
IdP JSON Validator
Paste an IdP accounts endpoint JSON response. The validator checks the schema, flags missing or invalid alternative fields, resolves the display name using Chrome 136's precedence rules, and renders a preview of what each account tile would look like in the FedCM chooser.
FedCM is a browser-mediated API — simulating Chrome 136 validation rules in-page.
Chrome 136 adds
name, given_name, tel, username, and label_hint as optional alternative fields in the accounts response. The browser resolves the display name using: name → given_name → email → username → tel. This validator checks each account entry and shows the resolved primary + secondary identifiers.
Accounts endpoint JSON