Signed receipt
A cryptographically signed record returned with each paid call, proving what was charged and that the request was metered by the platform.
A signed receipt is a verifiable record the platform returns alongside the response to a paid request. It attests to the facts of the transaction, which listing was called, the exact amount charged, and a request identifier, and it is signed so the buyer can later prove the call and its price were genuine. Because it is cryptographically signed rather than just reported, neither side can quietly alter what the charge was after the fact.
On Proxygate, every call_api request returns the upstream body together with the exact amount charged, a signed receipt, and a request id. The receipt gives an autonomous agent an auditable trail: it can reconcile its own spending, dispute a discrepancy, and prove to a downstream system what it paid for a given piece of data, all without trusting the platform's word alone.
Signed receipts are what make metered, machine-speed commerce accountable. When an agent makes thousands of small purchases, per-call proof is the only practical way to audit spending and resolve disputes. The receipt is the settlement primitive that ties a specific charge to a specific response, which is essential for a neutral clearinghouse that both buyers and sellers must be able to trust.
Related concepts
Signed receipt: frequently asked questions
A signed receipt is a cryptographically signed record returned with each paid call. It attests to which listing was called, the exact amount charged, and a request identifier, so the buyer can later prove the charge was genuine.
Each call_api response includes the upstream body, the exact amount charged, a signed receipt, and a request id. Together they give an agent an auditable, verifiable trail of what it paid for each call.
When an agent makes thousands of small purchases, per-call signed proof is the practical way to reconcile spending and resolve disputes, and it lets a neutral clearinghouse tie each charge to a specific response that both sides can trust.