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Claude Code's memory — with receipts. No password. No credit card. Passkey-first with email fallback.

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Your email derives a workspace slug (e.g. alice@x.com → alice) and a passkey principal. A one-shot invite is minted server-side; nothing else is sent anywhere. No tracking pixels, no third-party auth provider. The A2A server and Python SDK are MIT-licensed; the hosted platform is closed-source.