Timeline events since 2026-07-17

  1. ERC-8004: Trustless AgentsSecurityVerified

    Single externally owned account owns the proxies on Ethereum and Base Source [1]

    Holder not published.

  2. MarketMarketVerified

    Observed: x402.org counter unchanged, 8004scan passes 561,000 registrations Source [2, 3, 4]

    x402.org still shows 75.41M transactions and $24.24M for the last 30 days, values seen since mid August; 8004scan shows 561,614 agents across 30 networks; mppscan shows 127.4K transactions in what appears to be a 7-day window.

  3. StandardsReleaseVerified

    ERC-8226 adds per-asset mandates Source [5]

    Mandates keyed by agent, principal and asset (PR #2060). Still Draft.

  4. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    mppx 0.13.4 released Source [6]

  5. PolicyPolicyVerified

    MAS issues Guidelines on AI Risk Management Source [7, 8]

    Effective 2027-10-07, with some expectations phased to 2028-10-07. MAS plans to consult on more agentic AI guidance in 2027.

  6. AP2ReleaseVerified

    TypeScript SDK pull request closed unmerged Source [9]

    PR 305.

  7. Mastercard Agent PayLaunchVerified

    Trust Framework named; probability score testing in the US; Skyfire as KYA partner Source [10]

  8. x402PilotVerified

    Cloudflare Monetization Gateway closed beta Source [11]

    Settles USDC on Base through Coinbase's facilitator; US only.

  9. Stripe MPP (Machine Payments Protocol)GovernanceVerified

    Generic session intent pull request closed unmerged Source [12]

  10. ERC-8004: Trustless AgentsMarketVerified

    CSOAI census of 505,635 agent ids Source [13]

  11. UCPReleaseVerified

    Draft lodging booking capability merged on main Source [14, 15]

  12. x402ReleaseVerified

    exact on Lightning (lnbtc) Source [16]

  13. UCPMarketReported

    Reported automatic enrollment of US Shopify merchants in Google native checkout Source [17]

  14. Stripe MPP (Machine Payments Protocol)GovernanceVerified

    draft-ryan-httpauth-payment expired Source [18]

  15. StandardsReleaseVerified

    Web Monetization draft republished Source [19]

    WICG Draft Community Group Report with Interledger Foundation editors; not a W3C standard. No agent program announced.

  16. PolicyPolicyReported

    NPCI AI-agent registry for UPI reported Source [20]

    Reuters-relayed report of a planned agent registry and framework; no NPCI publication found.

  17. PolicyPolicyReported

    Ant International, Mastercard and Visa start Know Your Agent interoperability work Source [21, 22]

    A collaboration through the MAS-convened BuildFin.ai platform, building on Visa TAP, Mastercard Verifiable Intent and Ant's Agentic Mobile Protocol. No network rule change announced.

  18. AP2SecurityVerified

    Whisper attacks and A-VIP defense Source [23]

    arXiv:2609.11757.

  19. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    draft-httpauth-payment-01 posted Source [24, 25]

    A revision, not a rename; expires 2027-03-13.

  20. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    XRPL charge and session methods merged Source [26]

  21. UCPAnnouncementVerified

    UCP sessions at the W3C and GS1 workshop Source [27]

  22. AP2ReleaseVerified

    draft-stone-vcap-ap2-binding-01 Source [28]

    Third-party individual Internet-Draft; still names v0.1 objects.

  23. UCPGovernanceVerified

    Payments Tech Council formed Source [14]

  24. Mastercard Agent PayGovernanceVerified

    EMVCo draft agentic framework names Verifiable Intent Source [29]

  25. PolicyPolicyVerified

    EMVCo publishes a draft framework for card-based agentic payments Source [29, 30]

    Draft for comment until 2026-09-30, proposing Intent Services. EMVCo lists Know Your Agent and Agentic Transaction Indicators as possible future work.

  26. Visa Trusted Agent ProtocolGovernanceVerified

    Web Bot Auth working group draft -00 Source [31]

    TAP predates and does not conform to it.

  27. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    mppx 0.9.0 dual MPP and x402 wrappers Source [32]

  28. AP2ReleaseVerified

    UCP renames the extension and aligns with v0.2 Source [33, 34]

    dev.ucp.common.payment.ap2_mandate in release v2026-08-25.

  29. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    header parameter and Payment-Authorization merged Source [35]

  30. UCPReleaseVerified

    Release v2026-08-25: actions, 3DS2, split payments, AP2 rename Source [34, 36]

    dev.ucp.shopping.ap2_mandate became dev.ucp.common.payment.ap2_mandate.

  31. AP2SecurityVerified

    Beyond the Mandate security analysis Source [37]

    48 threats to v0.2, eight High.

  32. x402ReleaseVerified

    Client spend controls Source [38, 39]

    @x402/core 2.23.0: spendControls with a $1 default per payment.

  33. ERC-8004: Trustless AgentsLaunchVerified

    Robinhood Chain listed as the 25th mainnet Source [40]

  34. Visa Trusted Agent ProtocolReleaseVerified

    TAP attestation in mppx Source [41]

  35. UCPGovernanceVerified

    Lodging Tech Council formed Source [14]

  36. PolicyPolicyVerified

    Ninth Circuit vacates the Amazon v. Perplexity injunction Source [42]

    The user, not Perplexity, accessed Amazon using the agent as a tool; Amazon unlikely to succeed under the CFAA or CDAFA on these facts. Remanded.

  37. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    TAP and Web Bot Auth attestation merged in mppx Source [43, 44]

    Shipped in 0.8.17 on 2026-08-10; blog 2026-08-12.

  38. PolicyPolicyVerified

    EU AI Act general application date, including Article 50 transparency Source [45, 46]

    The general date of application of Regulation (EU) 2024/1689, kept by the Digital Omnibus. Chatbot-style disclosure duties under Article 50 apply from here.

  39. PolicyPolicyReported

    Worldpay: no liability shift yet for agent card payments Source [47]

    Analysis from an acquirer: properly tokenized agent transactions follow existing rules, while liability for disputes short of fraud is unresolved.

  40. Stripe MPP (Machine Payments Protocol)ReleaseVerified

    Subscription intent with Stripe and Tempo methods merged Source [48]

  41. PolicyPolicyVerified

    EU Digital Omnibus on AI enters into force Source [45]

    Regulation (EU) 2026/1744 moves Annex III high-risk obligations to 2027-12-02 and Annex I to 2028-08-02, and adds a grace period to 2026-12-02 for Article 50(2) marking by existing generative systems.

  42. MarketMarketReported

    Visa and Artemis adjust x402 volume to $15.0 million Source [49]

    Adjusted from $135.7 million raw; data to 2026-04-21. MPP measured at about $25,000.

  43. Agentic Commerce Protocol (ACP)ReleaseVerified

    Last commit to date Source [50]

    Optional product url on checkout items (unreleased); no commits through 2026-10-11.

  44. Mastercard Agent PaySecurityReported

    Verifiable Intent issue 29 on duplicate digests opened Source [51]

Dated after the build

Scheduled or effective dates later than 2026-10-15.

  1. PolicyVerified

    GENIUS Act latest effective date (scheduled) Source [52, 53]

Open the full timeline

Spec repositories

Latest release and latest commit on the default branch for 27 repositories, read from the GitHub API on . A "new" mark means the date falls on or after 2026-07-17.

Active in the last 90 days (17)
RepositoryLatest releaseLatest commit
ethereum/ERCs (external link)
The Ethereum Request for Comment repository
No releasesb1f2bd8 new
x402-foundation/x402 (external link)
A payments protocol for the internet. Built on HTTP.
No releasesf8f8330 new
tempoxyz/pympp (external link)
Python SDK for the Machine Payments Protocol
v0.11.0 (external link) new1303c1b new
Universal-Commerce-Protocol/ucp (external link)
Specification and documentation for the Universal Commerce Protocol (UCP)
v2026-08-25 (external link) newad9950b new
wevm/mppx (external link)
TypeScript Interface for Machine Payments Protocol
mppx@0.13.4 (external link) newd8d800f new
tempoxyz/mpp (external link)
Website for the Machine Payments Protocol
No releases6c5a0c6 new
tempoxyz/mpp-specs (external link)
Specifications for the Machine Payments Protocol - powered by the "Payment" HTTP authentication scheme
spec-artifacts-50309c8e67e6d64b5547f1cc354fb327bda1301e (external link) new50309c8 new
Universal-Commerce-Protocol/.github (external link)
This repository is for cross-repository configs (Code of Conduct, Linters) and implements PR triage via GitHub Code Owners
No releases95b77fd new
Universal-Commerce-Protocol/js-sdk (external link)
The official JavaScript SDK for UCP
v0.5.1 (external link) new6f7a6da new
Universal-Commerce-Protocol/python-sdk (external link)
The official Python SDK for UCP
v2026-08-25 (external link) new8f13fda new
Universal-Commerce-Protocol/samples (external link)
Samples for UCP
No releasescdb291c new
mastercard/developers-agent-toolkit (external link)
The Mastercard Developers Agent Toolkit allows popular agent frameworks to integrate with Mastercard Developers Platform for service discovery and integration guides.
No releases2c6781c new
visa/mcp (external link)
Integration toolkit for connecting AI agents to the Visa Intelligent Commerce platform.
No releases1c544e5 new
Merit-Systems/x402scan (external link)
x402 Ecosystem Explorer
@x402scan/mcp@0.3.1 (external link) 131a5d3 new
Universal-Commerce-Protocol/conformance (external link)
Conformance Tests for UCP
No releases016ecbc new
erc-8004/erc-8004-contracts (external link)
Registry contracts curated by the 8004 team
No releasesb9e466c new
agentic-commerce-protocol/agentic-commerce-protocol (external link)
The Agentic Commerce Protocol (ACP) is an interaction model and open standard for connecting buyers, their AI agents, and businesses to complete purchases seamlessly. The specification is currently maintained by OpenAI and Stripe.
No releases7fdd78d new
Quiet for 90 days or more (10)
RepositoryLatest releaseLatest commit
visa/vic-reference-agent (external link)
Open source reference app to run and experience agentic commerce functionality.
No releases39bc93d
google-agentic-commerce/a2a-x402 (external link)
The A2A x402 Extension brings cryptocurrency payments to the Agent-to-Agent (A2A) protocol, enabling agents to monetize their services through on-chain payments. This extension revives the spirit of HTTP 402 "Payment Required" for the decentralized agent ecosystem.
v0.1.0 (external link) 125db55
google-agentic-commerce/AP2 (external link)
Building a Secure and Interoperable Future for AI-Driven Payments.
v0.2.0 (external link) e1ea56d
coinbase/x402 (external link)
A payments protocol for the internet. Built on HTTP.
No releasesdd927a2
agent-intent/verifiable-intent (external link)
Open specification for cryptographic agent authorization in commerce
No releases356c296
lightninglabs/L402 (external link)
Pay for APIs with Lightning. Authenticate with the receipt. HTTP 402, realized.
No releases592203a
agent0lab/agent0-py (external link)
Agent0 is the SDK for agentic economies: open discovery and trust for agents
No releases943433e
agent0lab/agent0-ts (external link)
TypeScript SDK for agent portability, discovery and trust based on ERC-8004.
No releasesa6fb487
erc-8004/best-practices (external link)No releases8a99b86
visa/trusted-agent-protocol (external link)
Establishing a universal standard of trust between AI agents and merchants for the next phase of agentic commerce.
No releases16d59bd

Sources

  1. On-chain reads of the ERC-8004 proxies (owner, getVersion, ERC-1967 implementation slot) on Ethereum and Base (external link)Atlas research (eth_call through public RPCs). Dataset, primary source. Accessed .
  2. x402.org home page Last 30 Days counters (observed 2026-10-11) (external link)x402 Foundation. Dataset, primary source. Accessed .
  3. 8004scan home page statistics (observed 2026-10-11, later fetch) (external link)8004scan (powered by AltLayer). Dataset. Accessed .
  4. mppscan: Machine Payments Protocol explorer (observed 2026-10-11) (external link)mppscan. Dataset. Accessed .
  5. ERC-8226 file history in ethereum/ERCs (PRs #1679, #1844, #1982, #2060) (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  6. mppx on npm (external link)npm. Dataset, primary source. Accessed .
  7. MAS Sets Out Supervisory Expectations on Responsible AI Adoption by Financial Institutions (external link)Monetary Authority of Singapore. Announcement, primary source. Published . Accessed .
  8. Guidelines on Artificial Intelligence Risk Management for Financial Institutions (external link)Monetary Authority of Singapore. Standard, primary source. Published . Accessed .
  9. AP2 issues and pull requests opened since 2026-04-29 (GitHub issues API) (external link)GitHub. Dataset, primary source. Accessed .
  10. Mastercard Advances Agentic Commerce With New Trust and Intelligence Services (external link)Mastercard (Investor Relations, Business Wire release). Announcement, primary source. Published . Accessed .
  11. Monetization Gateway beta (external link)Cloudflare. Announcement, primary source. Published . Accessed .
  12. mpp-specs PR #280: docs: add generic session intent (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  13. ERC-8004 agent census (measured read, 2026-09-26) (external link)CSOAI Ltd (Council of AI) on Hugging Face. Dataset, primary source. Published . Accessed .
  14. UCP announcements (external link)UCP Authors. Announcement, primary source. Published . Accessed .
  15. UCP repository main branch schemas (draft, commit ad9950b) (external link)UCP Authors. Repository, primary source. Published . Accessed .
  16. x402 PR #2861: Specify exact Lightning on BIP-122 (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  17. Google switched on AI Mode checkout for Shopify stores without asking (external link)PPC Land. News. Published . Accessed .
  18. draft-ryan-httpauth-payment (IETF Datatracker record and history) (external link)IETF Datatracker. Standard, primary source. Published . Accessed .
  19. Web Monetization (Draft Community Group Report) (external link)W3C Web Platform Incubator Community Group / Interledger Foundation editors. Specification, primary source. Published . Accessed .
  20. India plans AI-agent registry for UPI payments (external link)TechNode Global (relaying Reuters). News. Published . Accessed .
  21. Ant International, Mastercard and Visa initiate collaboration on Know Your Agent interoperability to scale agentic commerce (external link)The Asian Banker (press release from Ant International). Announcement. Published . Accessed .
  22. Visa and Mastercard team with Ant on Know Your Agent framework (external link)PYMNTS. News. Accessed .
  23. Signing the Transaction but Not the Decision: Whisper Attacks and a Binding Defense for AP2 (external link)arXiv (Louck, Dvir, Stulman). Paper, primary source. Published . Accessed .
  24. draft-httpauth-payment (IETF Datatracker record and history) (external link)IETF Datatracker. Standard, primary source. Published . Accessed .
  25. mpp-specs PR #351: fix: renew IETF draft from Datatracker expiry (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  26. XRP Ledger Charge and Session Intents (draft-xrpl-charge-00, draft-xrpl-session-00) (external link)Ripple. Specification, primary source. Accessed .
  27. W3C/GS1 Workshop: E-commerce for Humans and AI Agents, agenda (external link)W3C and GS1. Video, primary source. Published . Accessed .
  28. VCAP-AP2 Binding: Verified Delivery Settlement for the Agent Payments Protocol (draft-stone-vcap-ap2-binding-01) (external link)IETF Datatracker (individual draft, B. Stone, SwarmSync.AI). Standard, primary source. Published . Accessed .
  29. EMVCo Requests Feedback on Framework for Secure, Interoperable and Scalable Card-Based Agentic Payments (external link)EMVCo. Standard, primary source. Published . Accessed .
  30. How EMVCo is Working to Enable Secure, Interoperable and Scalable Card-Based Agentic Payments (external link)EMVCo Knowledge Hub (Clinton Allen). Standard, primary source. Accessed .
  31. draft-ietf-webbotauth-httpsig-protocol-00: HTTP Message Signatures for automated traffic (external link)IETF Web Bot Auth working group. Standard, primary source. Published . Accessed .
  32. mppx CHANGELOG.md (external link)wevm. Repository, primary source. Accessed .
  33. UCP GitHub releases (v2026-01-11, v2026-01-23, v2026-04-08, v2026-08-25) (external link)Universal Commerce Protocol. Repository, primary source. Published . Accessed .
  34. payment_ap2_mandate.json (v2026-08-25) (external link)UCP Authors. Specification, primary source. Published . Accessed .
  35. mpp-specs PR #328: Alternate payment credential header (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  36. Release v2026-08-25 (external link)UCP Authors. Announcement, primary source. Published . Accessed .
  37. Beyond the Mandate: A Systematic Security Analysis of the Agent Payments Protocol (AP2) (external link)arXiv. Paper, primary source. Published . Accessed .
  38. @x402/core CHANGELOG.md (external link)x402 Foundation. Repository, primary source. Accessed .
  39. @x402/core on npm (external link)npm. Dataset, primary source. Accessed .
  40. Commit history of erc-8004-contracts README.md (external link)erc-8004 (GitHub organization). Repository, primary source. Accessed .
  41. Expanding identity support in mppx (blog) and advanced/identity.mdx (external link)Tempo (mpp.dev). Documentation, primary source. Published . Accessed .
  42. Amazon.com Services, LLC v. Perplexity AI, Inc., No. 26-1444 (9th Cir.), opinion (external link)US Court of Appeals for the Ninth Circuit. Other, primary source. Published . Accessed .
  43. mppx PR #732: feat: add TAP and Web Bot Auth attestation (external link)GitHub (wevm/mppx). Repository, primary source. Accessed .
  44. Expanding identity support in mppx (MPP blog) (external link)Tempo Labs (mpp.dev). Announcement, primary source. Published . Accessed .
  45. Regulation (EU) 2026/1744 (Digital Omnibus on AI), OJ L 2026/1744 of 24.7.2026 (external link)EUR-Lex (Publications Office of the EU). Standard, primary source. Published . Accessed .
  46. Regulation (EU) 2024/1689 (Artificial Intelligence Act) (external link)EUR-Lex (Publications Office of the EU). Standard, primary source. Published . Accessed .
  47. Agentic commerce liability is still being written (external link)Worldpay. Analysis. Published . Accessed .
  48. mpp-specs PR #230: Subscriptions: Intent + Stripe and Tempo Implementations (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  49. Visa/Artemis: The $0.14 Reality of Agent Commerce (external link)Forkast. News. Published . Accessed .
  50. GitHub commits API for agentic-commerce-protocol/agentic-commerce-protocol (per-path history) (external link)GitHub. Dataset, primary source. Accessed .
  51. VI v0.1 L2 format lists each mandate disclosure digest in both _sd and delegate_payload; RFC 9901 requires verifiers to reject the credentials (external link)GitHub (agent-intent issue). Repository. Published . Accessed .
  52. Public Law 119-27, GENIUS Act (S. 1582) (external link)U.S. Government Publishing Office. Standard, primary source. Published . Accessed .
  53. OCC Promises Final Rule for GENIUS Act by November (external link)PYMNTS. News. Published . Accessed .

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