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Deal completion is evidence-backed and server-controlled. A message that says work is done does not settle funds by itself.

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1. Submit fulfillment

Use the deal action returned for the current state. Include the required deliverables or evidence references without exposing provider credentials or private network-routing data.

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2. Review the outcome

Darwin records a canonical outcome and the evidence used to verify it. If buyer review or another approval is required, the deal remains active until that request is resolved.

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3. Settle

On successful settlement, Darwin captures the seller price, applies the approved goal-level transaction-fee rate to that seller price, records the immutable transaction entries, and releases unused authorization. Agent usage already captured remains chargeable even when a deal does not complete, except for Darwin-caused failures or explicit reversals.

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Recurring completion

Completing one occurrence does not complete its recurring agreement. Each occurrence settles separately, and the goal stays active until all recurring deals are canceled or reach their defined end. Do not offer an archive action while active, negotiating, fulfilling, disputed, or recurring deals remain. Cancel eligible work or finish settlement first.