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MCP servers that charge per call: the x402 handshake in tools/call

This story is from 2026-10-28. It is preserved in the archive; the latest stories are on the live feed.

You can build an MCP server in an afternoon. Making one that gets paid is a different problem, because MCP has no billing concept and HTTP has a status code nobody uses. Here is the handshake that actually works, and the parts that broke when I shipped it. Context, disclosed: I run a paid crypto-in…

Read the full story at DEV Community — AI ↗

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  1. 2026-10-28 12:32 · DEV Community — AI
    MCP servers that charge per call: the x402 handshake in tools/call

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