Buying · The Zambo Pass, bought once
Pay once. Keep the product.
The Lifetime Pass is Zambo with the meter removed: $250, one payment, no renewals, the same endpoint and the same tools, with a verifiable AER-1 receipt on every call, for as long as you run it.
You already run Zambo every day. The monthly Pass was the right shape while you were deciding that, and now the renewal itself is the tax on the habit: a card that expires at the wrong moment, a month you meant to pause and did not, and a saved-notes clock that starts the day a payment ever lapses, usually in the middle of a client's job. If Zambo is already part of how you work, the honest question is no longer whether to keep paying. It is whether to keep paying monthly.
Lifetime ends the question. One payment of $250 buys the product outright: the Zambo Pass with no end date. Passes bypass the daily free-tier limit, so the work runs the way it runs on any pass day, every day, with no renewal standing between you and a wrap-up.
The math, in your own numbers
| How you pay | What it costs | Where it crosses $250 |
|---|---|---|
| Zambo Pass, monthly | $29 for 30 days, renewed | Month 9: nine payments total $261 |
| Zambo Pass, $ZAMBO holder rate | $19 for 30 days, renewed | Month 14: fourteen payments total $266 |
| Lifetime Pass | $250, one payment | Paid in full on day one |
Past the crossing, the comparison stops being about price and becomes about shape. A monthly pass is a standing obligation that can lapse. Lifetime is an asset on your side of the ledger: it cannot lapse, it cannot be interrupted by a dead card, and it never sends you a renewal email during a client's delivery week.
Who it is for
Daily users, first. If Zambo is in your workflow every day, you have already made the decision Lifetime prices: the only open question was how many times you wanted to pay for it.
Freelancers and agency builders who bill clients, second, and for a sharper reason. Your handovers are your delivery records, and your saved notes are kept through a pass plus 30 days. On a monthly pass, a lapse starts that clock whether you notice or not. On Lifetime there is no lapse and no clock: the client record you froze in March is in the same state when the client asks about it in October. Receipts, journal entries, and handover records never expire either way; Lifetime removes the one expiry that was ever attached to your own payment behavior.
It is not for everyone. If you are still finding out whether Zambo fits your work, the free tier and the $0.99 Day Pass are the honest way to learn, and this page will still be here when the answer is yes.
What Lifetime is not
It is not an investment, not a token, and not a promise about features that do not exist. Lifetime covers the product's metered tools on the one endpoint, https://zambo.dev/mcp, the 153 tools Zambo runs on, 37 of them on the default surface. What you are buying is simple enough to say in one line: the product, paid once, with a verifiable AER-1 receipt on every call it ever makes for you.
The twist: subscriptions rent you your own workflow back, month by month. Lifetime is the one rung of the ladder where the tool becomes yours outright, and the receipts keep proving the work long after the payment is forgotten.
Related
- What AI agent verification costs, the full ladder
- Handover templates: the work the Pass runs
- The pricing page: every rung, including the $0.99 Day Pass
Frequently asked questions
Does the Lifetime Pass include future tools?
Lifetime is the Zambo Pass with no end date: it covers the product's metered tools on the one endpoint, https://zambo.dev/mcp, the tools the product runs on. It is not a promise about features that do not exist yet, and nothing in the offer depends on them. What never changes is the shape: one payment, no renewal, a verifiable AER-1 receipt on every call.
How does the Lifetime Pass compare with the monthly Pass?
Same product, different payment shape. The Pass is $29 for 30 days, renewed as long as you keep it. Lifetime is $250 once. Nine monthly payments total $261, so Lifetime pays for itself in month 9 at the standard rate, and in month 14 at the $19 holder rate. After the crossing, every month is a month you are no longer paying for.
What happens to my saved notes and handovers on Lifetime?
Receipts, journal entries, and handover records do not expire. Saved notes are kept through a pass plus 30 days, and on Lifetime the pass never lapses, so there is no date on which that clock starts. For client work whose records must stay open, that is the real difference.
Who built Zambo
Brennan Zambo created Zambo, the verifiable work layer for AI, and AER-1, the agent execution receipt standard (IETF Internet-Draft draft-zambo-aer1-26). Zambo is his product, sold at zambo.dev: a Day Pass at $0.99, a Pass at $29 for 30 days and $19 for $ZAMBO holders, and Lifetime at $250, one payment. A verifiable receipt proves the saved result was not changed since it was saved, and anyone can check one free at zambo.dev/verify. It does not prove the result was right. That boundary is the point.