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x402 + MCP: where does the budget check go?

This story is from 2026-09-26. It is preserved in the archive; the latest stories are on the live feed.

By Prakash Rao Bethapudi and Marco Gonzalez An agent needs to enrich a customer record. The tool that does it costs money. Nothing in x402 v2 says who is allowed to approve that. Nothing in MCP 2026-07-28 says it either. Both specs moved price and routing metadata into HTTP headers, which means you…

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  1. 2026-09-26 09:06 · DEV Community — AI
    x402 + MCP: where does the budget check go?

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