I Added Cryptographic Receipts to MCP Tool Calls in 20 Lines of Code

Dev.to•Mon, Aug 24, 2026, 08:32 AM•2 min read

If you've built an MCP server, you know the drill: define a tool, write a handler, return a result. The SDK handles the protocol, the transport, the schema validation. It feels clean.

Source: [Dev.to](https://dev.to/correctover/i-added-cryptographic-receipts-to-mcp-tool-calls-in-20-lines-of-code-4h7o)

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