Licensing

Xynthis is free to use. The Free tier is the full product (the brain, the agent, corpus indexing, the on-device model, the macOS app) with two limits. Pro removes them and adds the cloud features.

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Free vs Pro

The 7-day window applies to recall, not storage. Free installations store everything permanently, exactly like Pro: the brain keeps writing memory with no cap. What Free limits is how far back a chat turn or a recall query reaches. Upgrade later and your full history is already there, back to day one. A Team tier exists for seat-managed licenses; the product limits match Pro.

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Buying a license

Licenses are sold at xynthis.com. Payment is USDC on the Base network: self-custody, paid straight from your own wallet. You don’t need an account before buying: checkout takes an email address, and the license key is delivered to it after the payment confirms.

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Activating

In the app, open Settings → License and paste the key. The app verifies it locally (the key is a signed token checked against a bundled public key, so activation itself needs no network round-trip) and Pro features unlock immediately. A periodic heartbeat to the license server keeps the key current; a machine that goes offline keeps working within a 30-day grace window.

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Expiry and renewal

When a license expires, Xynthis degrades softly to Free. Nothing is deleted: your memory, sessions, and trained models stay exactly where they are, and the recall window simply drops to 7 days until you renew. The app keeps the expired license on record so it can show which plan lapsed and when, and prompts you to renew; signing out dismisses the prompt. Uninstalling behaves the same way: removing the binaries preserves ~/.xynthis/bmc/. Your data is only gone if you delete ~/.xynthis yourself.

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How enforcement works

The license is checked in the app and passed to the local daemon per request, which caps the recall window and gates multi-agent execution for Free-tier turns. Cloud features are gated harder: the web chat relay only connects with a valid, unexpired Pro key, verified server-side. The CLI itself does not take a license key. Tier limits apply through the app; a terminal-only installation runs without one.