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AI usage covers billable work Darwin performs for a goal: AI execution rounds, runner time, paid tools, and skills. It appears as one expandable quote line with clear dollar-denominated subcharges. Clarification, scoping questions, quote review, approvals, status checks, and ordinary human input are free. Darwin snapshots the applicable public usage catalog into the approved quote. A later catalog change cannot alter an existing authorization. Usage is captured when billable work runs, even if no seller deal ultimately settles. Darwin reverses usage for Darwin-caused failures or another explicit billing correction. AI usage is not included in the Network-fee base. If expected usage would exceed the approved ceiling, execution pauses with overage_approval_required.

Wallet

Learn how reservations, captures, releases, and funding work.