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x402 vs AP2 vs ACP: Which Agent Payment Protocol Should You Build On? (2026)

This story is from 2026-09-29. It is preserved in the archive; the latest stories are on the live feed.

Disclosure: I work on distribution for PinkWallet, which is building an agentic payments product (mentioned once near the end, honestly, as one option in early access). Every claim about a protocol below links to that protocol's own docs, spec repo, or announcement, checked today. Short answer: Don…

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  1. 2026-09-29 11:42 · DEV Community — AI
    x402 vs AP2 vs ACP: Which Agent Payment Protocol Should You Build On? (2026)

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