Blog/Engineering
EngineeringFebruary 2026 · 6 min read

Billing that an agent can drive safely

How upgrades and top-ups became a single call your agent can make on your behalf, without ever holding your card.

If the agent does the work, it also runs into the limits. So it needs a safe way to keep going — without ever touching your payment details directly.

The agent can ask to spend; only you can approve it.

A link, not a card

When a project needs more headroom, the agent generates a checkout link and hands it to you. You pay on any device; the agent never sees or stores a card. The boundary is clean: the agent requests, the human approves.

Only success counts

Failed calls never draw down your balance, so retries are free and surprises are rare. Everything settles against one number, which keeps the whole thing legible even when an agent is driving.

Build the thing you’re reading about.

Free to start. Your agent handles the rest.