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NIP-07 signer for sovereign identity: sign Nostr events without your keys ever leaving the extension. autograph is a browser extension for sovereign identity on the web. It implements NIP-07, the Nostr signing interface. Web applications request signatures through window.nostr, and autograph signs on your behalf with keys that never leave the extension. Your keys live in the extension, never on a website: sites request signatures, you approve them.
rating_count is the Chrome Web Store ratings count, not a written-review count.