Build Your Own Receipt Gateway in 28 Lines of Python

说明与用途

使用28行Python代码构建自己的收据网关，生成工具执行的加密证明，确保执行完整性。

问题

Agents can claim tool execution without verifiable proof, making it hard to trust their outputs.

结果

A lightweight, 28‑line Python implementation that mints verifiable receipts for every tool call, ensuring execution integrity without external services.

工作流

• 1. Wrap the tool dispatch in execute_with_receipt, passing tool name, arguments, and the tool function.
• 2. The executor runs the tool and obtains the result.
• 3. Immediately after execution, generate a receipt containing a UUID, tool name, SHA‑256 hashes of canonicalized arguments and result, and a timestamp.
• 4. Store the receipt and result in an append‑only log (RECEIPT_LOG).
• 5. Return the result and receipt ID to the agent.
• 6. To verify, fetch the receipt by UUID and compare the SHA‑256 hash of the claimed result with the stored hash using verify_receipt.

证据

The receipt has to be minted by the thing that runs the tool, not the thing that talks about running the tool.

来源

Wrap your tool dispatch in execute_with_receipt, and every call your agent makes now carries independently checkable proof.

来源