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Authorization and signed evidence for agentic commerce

Agents shouldn't hold unlimited wallets, and customers shouldn't have to approve every action. Your customer approves the limits once. Every step after that, from the approval to the payment, is checked against them and signed into one record.

Our position

The authority layer for autonomous software.

The biggest challenge in autonomous software is not capability. It is proof. Agents can already reason, plan, and act. What they cannot do is prove who allowed them to. Between the instruction and the outcome sit the model, the price, the merchant, and the executor. Any link can drift.

From agent intent to signed proof.

The customer defines the permission. Attesso verifies the agent's request and produces signed evidence that proves it. The integration is plain HTTPS: create a mandate, submit the proposed action, commit the outcome.

See the implementation path

~/customer-controlled

The customer sets the limit. The agent stays inside it.

~/independently-verifiable

Signed evidence records what was approved and what the agent requested.

~/keep-your-payment-provider

Add agent authorization without replacing your existing payment rail.

Built for agents that act while you're away.

A traveler approves a bounded mandate before boarding: this route, this cabin, up to this price, until Friday. When the airline moves the flight, the booking agent rebooks inside exactly those limits, and every decision comes back as signed evidence.

Put one signed mandate between your agent and its next payment.

Every step, from the customer's approval to that payment, comes back signed.