{
 "id": "x402",
 "name": "x402",
 "org": "Linux Foundation",
 "kind": "specification",
 "tier": "core",
 "status": "Open payment protocol under the x402 Foundation (Linux Foundation): intent announced 2026-04-02; operational launch and completed contribution by Coinbase announced 2026-07-14, with 40 member organisations at launch. On 2026-10-13 main is at commit 6c470a8 and the core specification header reads \"Protocol Version: 2\" (specs/x402-specification-v2.md); no release is listed on GitHub (not found, 2026-10-13). The file ROADMAP.md, which read \"(update coming soon)\" on 2026-10-03, was removed from main on 2026-10-13 by PR #3789, \"chore: remove outdated ROADMAP.md and PROJECT-IDEAS.md\".",
 "status_as_of": "2026-10-13",
 "relevance": "The README says \"x402 is an open standard for internet native payments.\"; the server answers 402 with a PAYMENT-REQUIRED header, the client replies with PAYMENT-SIGNATURE, and an http-message-signatures extension identifies the paying agent. The offer-and-receipt extension lets the server \"cryptographically commit to the payment terms it presents in\" accepts[] (the payment terms of the offer, not the commercial terms of the sale) and sign a receipt; it says \"Wire shape and field placement are not considered stable\". The FAQ describes the exact scheme as a push payment, \"irreversible once executed\".\n",
 "boundary": "The FAQ answers \"Not natively.\" on credit-card deposits, placing fiat rails outside the protocol.",
 "committed_next": [],
 "sources": [
  {
   "url": "https://www.linuxfoundation.org/press/linux-foundation-is-launching-the-x402-foundation-and-welcoming-the-contribution-of-the-x402-protocol",
   "read": "2026-10-03",
   "class": "decision"
  },
  {
   "url": "https://www.linuxfoundation.org/press/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications",
   "read": "2026-10-03",
   "class": "decision"
  },
  {
   "url": "https://github.com/x402-foundation/x402/blob/main/TSC.md",
   "read": "2026-10-13",
   "class": "normative"
  },
  {
   "url": "https://github.com/x402-foundation/x402/blob/main/specs/extensions/extension-offer-and-receipt.md",
   "read": "2026-10-13",
   "class": "normative"
  },
  {
   "url": "https://github.com/x402-foundation/x402/pull/3789",
   "read": "2026-10-13",
   "class": "decision"
  },
  {
   "url": "https://github.com/x402-foundation/x402/blob/main/python/legacy/README.md",
   "read": "2026-10-03",
   "class": "normative"
  },
  {
   "url": "https://github.com/x402-foundation/x402/pull/1311",
   "read": "2026-10-03",
   "class": "third-party"
  },
  {
   "url": "https://github.com/x402-foundation/x402/blob/main/docs/faq.md",
   "read": "2026-10-03",
   "class": "normative"
  }
 ],
 "overlaps": [
  "acp",
  "ucp",
  "verifiable-intent",
  "ietf-httpauth-payment"
 ],
 "seams": [
  "S2",
  "S3",
  "S4"
 ],
 "verified": "2026-10-14",
 "evidence": {
  "read": "On 2026-10-13 (fetch of the repository, commit 6c470a8): TSC.md, README.md, the core specification header, specs/extensions/extension-offer-and-receipt.md (still \"Wire shape and field placement are not considered stable\"), docs/faq.md, and the state of PRs #1986, #3220, #3656, #3789 and issues #2887, #2906, #3500. x402-foundation/x402, 2026-10-03: main branch read (README, TSC.md, ROADMAP, specs, docs, Technical Charter), issues and pull requests updated since 2026-03-01, and the two Linux Foundation releases.",
  "not_read": "Slack, the tsc and wg-identity repositories, x402.org member and calendar pages, older items; usage figures on x402.org (self-reported)."
 },
 "open_proposals": [
  {
   "what": "Terms extension specification",
   "author": "a participant",
   "date": "2026-04-10",
   "state": "open",
   "url": "https://github.com/x402-foundation/x402/pull/1986"
  },
  {
   "what": "Authority extension: bounded, offline-verifiable spending mandates",
   "author": "a participant",
   "date": "2026-08-20",
   "state": "open",
   "url": "https://github.com/x402-foundation/x402/pull/3220"
  },
  {
   "what": "Offer-receipt additions: action-receipt, v2 bindings, delivery proof, conformance (#2906 and others)",
   "author": "a participant",
   "date": "2026-07-19",
   "state": "open",
   "url": "https://github.com/x402-foundation/x402/issues/2906"
  },
  {
   "what": "Dispute evidence layer: working-group request (#2887), feature (#3500)",
   "author": "a participant",
   "date": "2026-07-17",
   "state": "open",
   "url": "https://github.com/x402-foundation/x402/issues/2887"
  },
  {
   "what": "Reviews extension: links to payment-backed reviews in 402 and settlement responses",
   "author": "a participant",
   "date": "2026-10-02",
   "state": "open",
   "url": "https://github.com/x402-foundation/x402/pull/3656"
  }
 ],
 "matrix": {
  "governance": "x402 Foundation (Linux Foundation); intent 2026-04-02, operational launch 2026-07-14; TSC.md lists Coinbase, Cloudflare, Stripe",
  "version_state": "v1 SDK packages marked \"Deprecated (v1)\"; offer-and-receipt: \"Wire shape and field placement are not considered stable\"",
  "signs": "Payer signs the payment (PAYMENT-SIGNATURE); with offer-and-receipt the server commits to the offer terms and signs a receipt",
  "signer": "The client for the payment; the server for offer and receipt",
  "record": "Signed receipt (offer-and-receipt), declared use \"dispute evidence and auditability\"; wire shape not stable",
  "dispute": "\"irreversible once executed\" (exact scheme, FAQ); auth-capture: void, refund, reclaim; dispute process: not found in the pages read, 2026-10-03; the repository has changed since (head e95b066 on 2026-10-13) and a text search of 2026-10-14 finds the word dispute in 26 files, among them the offer-and-receipt specification and scheme texts, not read for a dispute process",
  "source": "https://github.com/x402-foundation/x402/blob/main/specs/extensions/extension-offer-and-receipt.md"
 },
 "url": "https://frmoretto.github.io/agentic-standards-map/entries/x402.html",
 "source_url": "https://github.com/frmoretto/agentic-standards-map/blob/a1ae242918902e0768e0e6a79bd2bffc4ac5cfa3/entries/x402.yaml",
 "licence": "https://creativecommons.org/licenses/by/4.0/"
}