# XMR402

> Open standard for HTTP 402 payments — Monero-paid, agent-friendly, no signup.

**Canonical URL:** https://www.xmr.club/tools/xmr402
**Category:** tools / Payment Standard
**Grade (xmr.club rubric):** B
**KYC posture:** no_kyc
**Features:** open_source, xmr_native, api_available
**Highlights:** NO-KYC, SPEC
**Fees:** Spec / reference impl — free. Servers set their own price per resource.
**Website:** https://xmr402.org
**Last verified:** 2026-05-14

## Editorial review

Open spec for resurrecting the HTTP 402 status code as a real payment rail — XMR-first, with provisions for Lightning. Designed for the agentic web: machine-to-machine micropayments that need zero signup and minimal latency. Operator-disclosed: the curator runs this; the protocol itself is permissionless and the spec is open, but read /transparency for context before relying on it for production billing.

## Citation

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