Agentic Rails Atlasby merces.ai

Cross-cutting

Timeline

Every dated event in the atlas on one chart: a lane per protocol, plus lanes for standards, policy, market and the prehistory of paying over HTTP. Each event carries its sources and a confidence.

Verified (verified under 30 days ago)

226 events: 199 verified, 27 reported, 0 unverified.

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208 of 226 events, 2025 to 2027, grouped by month.

ERC-8004: Trustless Agents
x402
Visa Trusted Agent Protocol
Agentic Commerce Protocol (ACP)
UCP
Stripe MPP (Machine Payments Protocol)
AP2
Mastercard Agent Pay
Standards
Policy
Market

Select a marker to read its events and sources, or switch to the list view.

Sources

  1. Blind Signatures for Untraceable Payments (Chaum), Advances in Cryptology: Proceedings of Crypto 82 (external link)Springer (Plenum Press). Paper, primary source. Published . Accessed .
  2. The Millicent Protocol for Inexpensive Electronic Commerce (Glassman, Manasse, Abadi, Gauthier, Sobalvarro) (external link)W3C (Fourth International World Wide Web Conference archive). Paper, primary source. Published . Accessed .
  3. The Millicent Protocols for Electronic Commerce (Manasse) (external link)USENIX. Paper, primary source. Published . Accessed .
  4. PayWord and MicroMint: Two simple micropayment schemes (Rivest, Shamir), Security Protocols, LNCS 1189 (external link)Springer. Paper, primary source. Published . Accessed .
  5. RFC 2068: Hypertext Transfer Protocol, HTTP/1.1 (external link)RFC Editor (IETF). Standard, primary source. Published . Accessed .
  6. Electronic lottery tickets as micropayments (Rivest), Financial Cryptography 1997, LNCS 1318 (external link)Springer. Paper, primary source. Published . Accessed .
  7. RFC 2616: Hypertext Transfer Protocol, HTTP/1.1 (external link)RFC Editor (IETF). Standard, primary source. Published . Accessed .
  8. Macaroons: Cookies with Contextual Caveats for Decentralized Authorization in the Cloud (Birgisson et al.) (external link)Internet Society (NDSS Symposium 2014). Paper, primary source. Published . Accessed .
  9. EMVCo Releases Tokenization Specification, Invites Feedback (March 11, 2014) (external link)FinTech Futures. News. Published . Accessed .
  10. The evolution of payment tokenization (external link)Federal Reserve Bank of Boston. Analysis. Accessed .
  11. The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments (Poon, Dryja), draft version 0.5.9.2 (external link)lightning.network. Paper, primary source. Published . Accessed .
  12. ERC: Key Manager (issue 734) (external link)ethereum/EIPs (GitHub). Other, primary source. Published . Accessed .
  13. ERC: Claim Holder (issue 735) (external link)ethereum/EIPs (GitHub). Other, primary source. Published . Accessed .
  14. lightninglabs/L402 commit history (external link)Lightning Labs (GitHub). Repository, primary source. Published . Accessed .
  15. LSAT: Authentication and Payments for the Lightning-Native Web (external link)Lightning Labs. Announcement, primary source. Published . Accessed .
  16. ERC-3643: T-REX - Token for Regulated EXchanges (external link)Ethereum ERCs repository. Specification, primary source. Accessed .
  17. RFC 9110: HTTP Semantics (external link)RFC Editor (IETF). Standard, primary source. Published . Accessed .
  18. L402 protocol specification, section 10 Backwards Compatibility (external link)Lightning Labs (GitHub). Specification, primary source. Accessed .
  19. AI for All: Powering APIs and Large Language Models with Lightning (external link)Lightning Labs. Announcement, primary source. Published . Accessed .
  20. blip-0026: L402 - Lightning HTTP 402 Protocol (pull request #26) (external link)lightning/blips (GitHub). Standard, primary source. Published . Accessed .
  21. bLIP-0026: L402 (pull request #26 head, open and unmerged) (external link)Lightning bLIPs. Standard, primary source. Published . Accessed .
  22. RFC 9421: HTTP Message Signatures (external link)RFC Editor (IETF). Standard, primary source. Published . Accessed .
  23. RFC 9530: Digest Fields (external link)RFC Editor (IETF). Standard, primary source. Published . Accessed .
  24. x402 commit history for specs/ (GitHub commits API) (external link)GitHub. Repository, primary source. Accessed .
  25. FIDO Alliance Launches Payments Working Group (external link)FIDO Alliance. Announcement, primary source. Published . Accessed .
  26. Mastercard Unveils Agent Pay, Pioneering Agentic Payments Technology to Power Commerce in the Age of AI (external link)Mastercard (Investor Relations, Business Wire release). Announcement, primary source. Published . Accessed .
  27. Find and Buy with AI: Visa Unveils New Era of Commerce (external link)Visa. Announcement, primary source. Published . Accessed .
  28. x402: An open standard for internet-native payments (whitepaper) (external link)Coinbase Developer Platform. Specification, primary source. Published . Accessed .
  29. x402 (legacy V1 TypeScript package) on npm (external link)npm. Dataset, primary source. Accessed .
  30. GitHub API repository metadata for google-agentic-commerce/AP2 (external link)GitHub. Dataset, primary source. Accessed .
  31. Public Law 119-27, GENIUS Act (S. 1582) (external link)U.S. Government Publishing Office. Standard, primary source. Published . Accessed .
  32. GitHub API: mastercard/developers-agent-toolkit repository metadata (external link)GitHub. Dataset, primary source. Accessed .
  33. ERC-8004: Trustless Agents (specification source, ERCS/erc-8004.md) (external link)Ethereum ERCs repository. Specification, primary source. Published . Accessed .
  34. Add ERC: Trustless Agents (#1170) (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  35. GHSA-3j63-5h8p-gf7c: x402 legacy npm packages below 0.5.2 (external link)GitHub Advisory Database. Other, primary source. Published . Accessed .
  36. Personal Financial Data Rights Reconsideration (advance notice of proposed rulemaking) (external link)Consumer Financial Protection Bureau (Federal Register). Standard, primary source. Published . Accessed .
  37. Visa advances agentic commerce with MCP Server, Acceptance Agent Toolkit (external link)Visa. Announcement, primary source. Published . Accessed .
  38. Retail payments supervision (external link)Bank of Canada. Documentation, primary source. Accessed .
  39. Retail Payment Activities Act (S.C. 2021, c. 23, s. 177) (external link)Justice Laws Website (Government of Canada). Standard, primary source. Accessed .
  40. Mastercard Unveils New Tools and Collaborations to Power Smarter, Safer Agentic Commerce (external link)Mastercard (Investor Relations, Business Wire release). Announcement, primary source. Published . Accessed .
  41. Powering AI commerce with the new Agent Payments Protocol (AP2) (external link)Google Cloud Blog. Announcement, primary source. Published . Accessed .
  42. AP2 GitHub releases v0.1.0 and v0.2.0 (external link)Google (google-agentic-commerce). Repository, primary source. Published . Accessed .
  43. Powering AI commerce with the new Agent Payments Protocol (AP2) (external link)Google Cloud. Announcement, primary source. Published . Accessed .
  44. a2a-x402 release v0.1.0 (external link)Google Agentic Commerce. Repository, primary source. Published . Accessed .
  45. Launching the x402 Foundation with Coinbase, and support for x402 transactions (external link)Cloudflare. Announcement, primary source. Published . Accessed .
  46. Buy it in ChatGPT: Instant Checkout and the Agentic Commerce Protocol (external link)OpenAI. Announcement, primary source. Published . Accessed . Archived copy (external link).
  47. Stripe powers Instant Checkout in ChatGPT and releases Agentic Commerce Protocol co-developed with OpenAI (external link)Stripe. Announcement, primary source. Published . Accessed .
  48. The agentic commerce opportunity: How AI agents are ushering in a new era for consumers and merchants (external link)McKinsey and Company (QuantumBlack). Analysis, primary source. Accessed .
  49. Agentic commerce moves closer to reality with PayOS and Mastercard (external link)Payments Industry Intelligence. News. Published . Accessed .
  50. Update ERC-8004: Move to Review (#1244) (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  51. Commit history of erc-8004/erc-8004-contracts (external link)erc-8004 (GitHub organization). Repository, primary source. Accessed .
  52. Razorpay, NPCI, and OpenAI Come Together to Launch Agentic Payments, Ushering in AI-Driven Commerce at National Scale (external link)Razorpay. Announcement, primary source. Published . Accessed .
  53. OpenAI's ChatGPT in India: UPI agentic payments pilot (TechCrunch) (external link)TechCrunch. News. Published . Accessed .
  54. Trusted Agent Protocol Product Terms (external link)Visa. Documentation, primary source. Published . Accessed .
  55. visa/trusted-agent-protocol repository metadata, commits, pull requests and issues (GitHub API) (external link)GitHub. Repository, primary source. Accessed .
  56. Walmart Partners with OpenAI to Create AI-First Shopping Experiences (external link)Walmart. Announcement, primary source. Published . Accessed .
  57. Visa Introduces Trusted Agent Protocol: An Ecosystem-Led Framework for AI Commerce (external link)Visa. Announcement, primary source. Published . Accessed .
  58. Mastercard Checkout Solutions: Release History (external link)Mastercard Developers. Documentation, primary source. Accessed .
  59. Coinbase's x402 transactions rise 10,000 percent (external link)Cointelegraph. News. Accessed .
  60. Commit history of erc-8004-contracts README.md (external link)erc-8004 (GitHub organization). Repository, primary source. Accessed .
  61. Securing agentic commerce: helping AI Agents transact with Visa and Mastercard (external link)Cloudflare Blog. Announcement, primary source. Published . Accessed .
  62. Securing agentic commerce: helping AI Agents transact with Visa and Mastercard (external link)Cloudflare. Analysis, primary source. Published . Accessed .
  63. Mastercard and PayPal Join Forces To Accelerate Secure Global Agentic Commerce (external link)PayPal Newsroom. Announcement, primary source. Published . Accessed .
  64. OpenAI and PayPal Team Up to Power Instant Checkout and Agentic Commerce in ChatGPT (external link)PayPal. Announcement, primary source. Published . Accessed .
  65. History of docs/partners.md (56 entries at e66fc0b, 113 at b43b072, 125 at 61f5de4; removed in b4587ac) (external link)Google (google-agentic-commerce). Repository, primary source. Published . Accessed .
  66. Mastercard Incorporated (NYSE:MA) Q3 2025 Earnings Call Transcript (external link)Insider Monkey. News. Published . Accessed .
  67. Mastercard CEO Sees Long Runway for Agentic Commerce (external link)PYMNTS. News. Published . Accessed .
  68. A2A Protocol: x402 Payments Extension v0.2 (external link)Google (google-agentic-commerce). Specification, primary source. Published . Accessed .
  69. Amazon.com Services LLC v. Perplexity AI, Inc. dockets (N.D. Cal. 3:25-cv-09514; 9th Cir. 26-1444) (external link)CourtListener (Free Law Project). Dataset, primary source. Published . Accessed .
  70. 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 .
  71. remove feedbackAuth and change bytes to tags in ReputationRegistry (external link)erc-8004 (GitHub organization). Repository, primary source. Published . Accessed .
  72. Trustless Agent Day (Devconnect Buenos Aires) (external link)Luma (8004 Builder Community). Announcement, primary source. Published . Accessed .
  73. ACP CLA Signatories (external link)Agentic Commerce Protocol project. Repository, primary source. Accessed .
  74. PSD3 and PSR: final compromise texts published (external link)Arthur Cox. Analysis. Accessed .
  75. PSD3 and PSR for developers (readiness timeline) (external link)Open Banking Tracker. Analysis. Accessed .
  76. Mastercard unveils Agent Pay in Latin America and the Caribbean, accelerating smarter, safer agentic commerce (external link)Mastercard Newsroom. Announcement, primary source. Published . Accessed .
  77. Morgan Stanley: AI agentic shoppers could drive $385 billion in online sales (external link)Digital Commerce 360. News. Published . Accessed .
  78. x402 Protocol Specification v2 (external link)x402 Foundation. Specification, primary source. Published . Accessed .
  79. Stripe launches the Agentic Commerce Suite to help every business thrive in the AI-enabled commerce era (external link)Stripe. Announcement, primary source. Published . Accessed .
  80. x402 PR #705: Development v2 (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  81. @x402/core on npm (external link)npm. Dataset, primary source. Accessed .
  82. Introducing x402 V2: Evolving the Standard for Internet-native Payments (external link)x402 Foundation. Announcement, primary source. Published . Accessed .
  83. ACP changelog, version 2025-12-12 (external link)Agentic Commerce Protocol project. Specification, primary source. Published . Accessed .
  84. AP2 commit history on main (GitHub commits API) (external link)GitHub. Dataset, primary source. Accessed .
  85. Klarna Launches Agentic Product Protocol: The Open Standard That Makes 100M Products Instantly Discoverable by AI Agents (external link)Klarna (Business Wire). Announcement, primary source. Published . Accessed .
  86. 2030 forecast: how agentic AI will reshape US retail (snap chart) (external link)Bain and Company. Analysis, primary source. Published . Accessed .
  87. Akamai and Visa join forces to secure the next era of agentic commerce (external link)Akamai. Announcement, primary source. Published . Accessed .
  88. Visa and Partners Complete Secure AI Transactions, Setting the Stage for Mainstream Adoption in 2026 (external link)Visa. Announcement, primary source. Published . Accessed .
  89. GitHub repository metadata for Universal-Commerce-Protocol/ucp (external link)GitHub. Repository, primary source. Published . Accessed .
  90. tempoxyz/mpp-specs commit history (GitHub API) (external link)GitHub. Repository, primary source. Accessed .
  91. Update ERC-8004: Update erc-8004.md (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  92. Adobe: Holiday Shopping Season Drove a Record $257.8 Billion Online with Consumers Embracing Generative AI Tools (external link)Adobe. Announcement, primary source. Published . Accessed .
  93. AI and agents account for $262 billion of 2025 holiday spend (external link)Salesforce. Announcement, primary source. Published . Accessed .
  94. Conversations that Convert: Copilot Checkout and Brand Agents (external link)Microsoft Advertising. Announcement, primary source. Published . Accessed .
  95. UCP AP2 Mandates Extension (external link)Universal Commerce Protocol. Specification, primary source. Published . Accessed .
  96. ap2_mandate.json (v2026-04-08) (external link)UCP Authors. Specification, primary source. Published . Accessed .
  97. The next era of agentic retail (NRF 2026 remarks) (external link)Google (Sundar Pichai). Announcement, primary source. Published . Accessed .
  98. Under the Hood: Universal Commerce Protocol (UCP) (external link)Google Developers Blog (Amit Handa, Ashish Gupta). Announcement, primary source. Published . Accessed .
  99. UCP GitHub releases and tags (external link)GitHub. Repository, primary source. Published . Accessed .
  100. Update erc-8004.md (#1470) (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  101. Extension: bazaar (external link)x402 Foundation. Specification, primary source. Published . Accessed .
  102. ACP changelog, version 2026-01-16 (external link)Agentic Commerce Protocol project. Specification, primary source. Published . Accessed .
  103. Shopify Merchants to Pay 4% Fee on ChatGPT Checkout Sales (external link)PYMNTS. News. Published . Accessed .
  104. Update ERC-8004: Updates from community feedback (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  105. Mastercard accelerates AI-powered commerce with Australia’s first authenticated agentic transactions using Agent Pay (external link)Mastercard Newsroom. Announcement, primary source. Published . Accessed .
  106. Whispers of Wealth: Red-Teaming Google's Agent Payments Protocol via Prompt Injection (external link)arXiv. Paper, primary source. Published . Accessed .
  107. ACP changelog, version 2026-01-30 (external link)Agentic Commerce Protocol project. Specification, primary source. Published . Accessed .
  108. Extension: sign-in-with-x (external link)x402 Foundation. Specification, primary source. Published . Accessed .
  109. US Senator Demands Answers on Google's New Commerce Protocol (external link)eWeek. News. Published . Accessed .
  110. Zero-Trust Runtime Verification for Agentic Payment Protocols: Mitigating Replay and Context-Binding Failures in AP2 (external link)arXiv. Paper, primary source. Published . Accessed .
  111. Stripe adds x402 integration for USDC agent payments on Base (external link)The Block. News. Published . Accessed .
  112. What to expect in digital advertising and commerce in 2026 (external link)Google (Vidhya Srinivasan). Announcement, primary source. Published . Accessed .
  113. mppx on npm (external link)npm. Dataset, primary source. Accessed .
  114. draft-ryan-httpauth-payment (IETF Datatracker record and history) (external link)IETF Datatracker. Standard, primary source. Published . Accessed .
  115. UCP pull requests (merge dates via GitHub API) (external link)GitHub. Repository, primary source. Accessed .
  116. Verifiable Intent CHANGELOG (external link)agent-intent. Repository, primary source. Published . Accessed .
  117. Razorpay and NPCI Launch Agentic Payments on Claude, Powering Zomato, Swiggy and Zepto at the India AI Impact Summit (external link)Razorpay. Announcement, primary source. Published . Accessed .
  118. bLIP-0026: L402: The Lightning HTTP 402 Protocol (PR head text) (external link)Lightning bLIPs (Olaoluwa Osuntokun, Oliver Gugger, Wilmer Paulino). Specification, primary source. Published . Accessed .
  119. A402: Binding Cryptocurrency Payments to Service Execution for Agentic Commerce (external link)arXiv. Paper, primary source. Published . Accessed .
  120. Santander and Mastercard complete Europe’s first live end-to-end payment executed by an AI agent (external link)Mastercard Newsroom. Announcement, primary source. Published . Accessed .
  121. Supporting additional payment methods for agentic commerce (external link)Stripe Blog. Announcement, primary source. Published . Accessed .
  122. x402 PR #1074: upto scheme specification (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  123. GitHub API: agent-intent/verifiable-intent repository metadata (external link)GitHub. Dataset, primary source. Accessed .
  124. Verifiable Intent tag v0.1.0 (external link)GitHub (agent-intent). Repository, primary source. Published . Accessed .
  125. Mastercard Unveils Open Standard to Verify AI Agent Transactions (external link)PYMNTS. News. Published . Accessed .
  126. GHSA-qr2g-p6q7-w82m: facilitators processing Solana payments (external link)GitHub Advisory Database. Other, primary source. Published . Accessed .
  127. Judge blocks Perplexity's AI bot from shopping on Amazon in early test of agentic commerce (external link)GeekWire. News. Published . Accessed .
  128. Amazon Wins Court Order Blocking Perplexity AI Shopping Agent (external link)Decrypt. News. Accessed .
  129. Amazon secures injunction against Perplexity (external link)Payment Expert. News. Published . Accessed .
  130. Judge grants Perplexity access to Amazon for agentic AI (external link)Digital Commerce 360. News. Published . Accessed .
  131. Opinion, Amazon.com Services, LLC v. Perplexity AI, Inc., No. 26-1444 (external link)U.S. Court of Appeals for the Ninth Circuit. Other, primary source. Published . Accessed .
  132. Agentic Commerce Protocol (ACP) Governance (external link)Agentic Commerce Protocol project. Repository, primary source. Published . Accessed .
  133. GitHub commits API for agentic-commerce-protocol/agentic-commerce-protocol (per-path history) (external link)GitHub. Dataset, primary source. Accessed .
  134. OpenAI to pivot from 'Instant Checkout' ChatGPT feature months after launch (external link)Retail Systems. News. Published . Accessed .
  135. Mastercard completes Korea’s first live agentic transactions, unlocking trusted AI-powered commerce (external link)Mastercard Newsroom. Announcement, primary source. Published . Accessed .
  136. Visa launches Agentic Ready programme to advance agentic commerce in Europe (external link)Visa. Announcement, primary source. Published . Accessed .
  137. Tempo Mainnet Is Live: Build on Tempo Today (external link)Tempo. Announcement, primary source. Published . Accessed .
  138. Introducing the Machine Payments Protocol (Stripe blog) (external link)Stripe. Announcement, primary source. Published . Accessed .
  139. Tempo Mainnet is live (Tempo blog) (external link)Tempo Labs. Announcement, primary source. Published . Accessed .
  140. Visa introduces card specification and SDK for Machine Payments Protocol (external link)Visa. Announcement, primary source. Published . Accessed .
  141. Visa introduces card specification and SDK for Machine Payments Protocol (external link)Visa. Announcement, primary source. Published . Accessed .
  142. draft-card-charge-00: Card Network Charge Intent for HTTP Payment Authentication (external link)Visa (author J. Brans) in tempoxyz/mpp-specs. Specification, primary source. Accessed .
  143. Google Updates UCP With Carts, Catalogs, Loyalty (external link)Let's Data Science. News. Accessed .
  144. Mastercard advances agentic payments in Latin America and the Caribbean with live transactions completed across the region (external link)Mastercard Newsroom. Announcement, primary source. Published . Accessed .
  145. Powering Product Discovery in ChatGPT (external link)OpenAI. Announcement, primary source. Published . Accessed . Archived copy (external link).
  146. Solana Charge and Session Intents (draft-solana-charge-00, draft-solana-session-00) (external link)Solana Foundation; Moonsong Labs (session). Specification, primary source. Accessed .
  147. Payments Regulatory Priorities (March 2026) (external link)Financial Conduct Authority. Documentation, primary source. Published . Accessed .
  148. Regulatory Priorities reports (external link)Financial Conduct Authority. Documentation, primary source. Accessed .
  149. Bill C-15 (45-1): Budget 2025 Implementation Act, No. 1 (external link)Parliament of Canada (LEGISinfo). Standard, primary source. Published . Accessed .
  150. Canada enacts framework to regulate stablecoin in Bill C-15 (external link)DLA Piper. Analysis. Published . Accessed .
  151. GHSA-mv9j-8jvg-j8mr / CVE-2026-34209: mppx Tempo session close voucher bypass (external link)GitHub Advisory Database. Other, primary source. Published . Accessed .
  152. GHSA-8mhj-rffc-rcvw / CVE-2026-34210: mppx Stripe charge credential replay (external link)GitHub Advisory Database. Other, primary source. Published . Accessed .
  153. wevm/mppx repository security advisories (external link)GitHub (wevm/mppx). Other, primary source. Accessed .
  154. GHSA-fxc9-7j2w-vx54: mpp (Rust) multiple payment bypass and griefing vulnerabilities (external link)GitHub Advisory Database. Other, primary source. Published . Accessed .
  155. Technical Charter for x402 a Series of LF Projects, LLC (external link)LF Projects, LLC. Standard, primary source. Published . Accessed .
  156. Linux Foundation is Launching the x402 Foundation and Welcoming the Contribution of the x402 Protocol (external link)Linux Foundation. Announcement, primary source. Published . Accessed .
  157. Release v2026-04-08 (external link)UCP Authors. Announcement, primary source. Published . Accessed .
  158. Visa Opens the Door to AI-Driven Shopping for Businesses Worldwide (Intelligent Commerce Connect) (external link)Visa. Announcement, primary source. Published . Accessed .
  159. ERC-8226: Regulated Agent Mandate (external link)Ethereum Improvement Proposals (eips.ethereum.org). Standard, primary source. Published . Accessed .
  160. ERC-8226 file history in ethereum/ERCs (PRs #1679, #1844, #1982, #2060) (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Published . Accessed .
  161. mpp-specs PR #231: spec: add Accept-Payment negotiation (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  162. Agent0 subgraphs live: indexing the ERC-8004 agent economy (external link)The Graph Foundation. Announcement, primary source. Published . Accessed .
  163. American Express Debuts Agentic Commerce Experiences (ACE) Developer Kit and Agent Purchase Protection (external link)American Express (Business Wire release via Nasdaq). Announcement, primary source. Published . Accessed .
  164. x402 PR #1145: batch-settlement scheme with cloudflare:402 binding and http-message-signatures extension (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  165. Scheme: batch-settlement on cloudflare:402 (external link)x402 Foundation. Specification, primary source. Published . Accessed .
  166. ACP changelog, version 2026-04-17 (external link)Agentic Commerce Protocol project. Specification, primary source. Published . Accessed .
  167. EVM Charge and Session Intents (draft-evm-charge-00, draft-evm-session-00) (external link)Coinbase, MegaETH Labs, Monad Foundation (charge); OKG (session). Specification, primary source. Accessed .
  168. BREAKING: Field alignment v2 (constraint prefixes, cnf restructure, risk_data, VCT versioning) (external link)GitHub (agent-intent). Repository, primary source. Published . Accessed .
  169. Delegate SD-JWT (draft-gco-oauth-delegate-sd-jwt-00) (external link)IETF Datatracker (individual draft, G. Oliver). Standard, primary source. Published . Accessed .
  170. UCP announcements (external link)UCP Authors. Announcement, primary source. Published . Accessed .
  171. We're donating Agent Payments Protocol to the FIDO Alliance to support the future of secure, agentic payments (external link)Google (The Keyword blog). Announcement, primary source. Published . Accessed .
  172. FIDO Alliance to Develop Standards for Trusted AI Agent Interactions (external link)FIDO Alliance. Announcement, primary source. Published . Accessed .
  173. FIDO Alliance to Develop Standards for Trusted AI Agent Interactions (external link)FIDO Alliance. Announcement, primary source. Published . Accessed .
  174. Donating Agent Payments Protocol to the FIDO Alliance (external link)Google. Announcement, primary source. Published . Accessed .
  175. Everything we announced at Sessions 2026 (Stripe blog) (external link)Stripe. Announcement, primary source. Published . Accessed .
  176. Nanopayments powered by Circle Gateway is now live on mainnet (external link)Circle. Announcement, primary source. Published . Accessed .
  177. MPP blog posts (subscriptions 2026-05-12, EVM and x402 support 2026-06-08, Go and Ruby SDKs 2026-04-21, multi-method discovery 2026-04-28, payment hooks 2026-05-21, agent runtimes 2026-07-27, relays 2026-08-03) (external link)Tempo Labs (mpp.dev). Announcement, primary source. Accessed .
  178. x402 PR #2253: Create TSC.md (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  179. TSC.md (Technical Steering Committee roster) (external link)x402 Foundation. Documentation, primary source. Published . Accessed .
  180. x402 PR #1425: auth-capture scheme specification (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  181. Google Shopping introduces Universal Cart (external link)Google. Announcement, primary source. Published . Accessed .
  182. How we're helping retailers thrive with new Universal Commerce Protocol features and AI tools on Google (external link)Google. Announcement, primary source. Published . Accessed .
  183. Keyrock identifies cryptocurrencies as financial base for AI agents (external link)ForkLog. News. Published . Accessed .
  184. Issue 268: Checkout JWT algorithm constraint forces dual keys under WBA (and conflicts with normative Security and Privacy guidance) (external link)GitHub (igrigorik). Other, primary source. Published . Accessed .
  185. Commit history of ERCS/erc-8126.md (external link)Ethereum ERCs repository (GitHub). Repository, primary source. Accessed .
  186. Europe is Building the Foundations for Trusted Agentic Commerce (external link)Mastercard Newsroom (Brice van de Walle). Announcement, primary source. Published . Accessed .
  187. Letter from Senator Mark R. Warner to Treasury Secretary Scott Bessent on AI agents in financial services (external link)Office of Senator Mark R. Warner (hosted by Punchbowl News). Other, primary source. Published . Accessed .
  188. Warner floats federal framework for AI agents, presses Treasury on financial services risks (external link)AccountsRecovery.net. News. Published . Accessed .
  189. mppx CHANGELOG.md (external link)wevm. Repository, primary source. Accessed .
  190. Mastercard Launches Agent Pay for Machines to Unlock Super-Fast, Always-On Payments (external link)Mastercard (Investor Relations, Business Wire release). Announcement, primary source. Published . Accessed .
  191. Visa Announces New AI, Stablecoin and Token Innovations to Power Intelligent, Programmable Commerce at Visa Payments Forum (external link)Visa. Announcement, primary source. Published . Accessed .
  192. "usdc" Payment Method for HTTP Payment Authentication (draft-usdc-charge-00) (external link)Circle Internet Group, Inc.. Specification, primary source. Accessed .
  193. draft-httpauth-payment (IETF Datatracker record and history) (external link)IETF Datatracker. Standard, primary source. Published . Accessed .
  194. Can Trustless Agents Be Trusted? An Empirical Study of the ERC-8004 Decentralized AI Agent Ecosystem (external link)arXiv (Xiong, Li, Wei, Wang et al.). Paper, primary source. Published . Accessed .
  195. mpp-specs PR #278: docs: document Tempo session v2 protocol (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  196. An improved sessions experience (MPP blog) (external link)Tempo Labs (mpp.dev). Announcement, primary source. Published . Accessed .
  197. End of the MiCA transitional period: ESMA sets out its expectations of professionals and warns retail investors (external link)Autorite des marches financiers (AMF). Announcement, primary source. Published . Accessed .
  198. Regulation (EU) 2023/1114 on markets in crypto-assets (MiCA) (external link)EUR-Lex (Publications Office of the EU). Standard, primary source. Published . Accessed .
  199. Visa and Banks Across Europe Reach the Next Phase of Agentic Commerce, Unlocking Secure Access to Merchants (external link)Visa. Announcement, primary source. Published . Accessed .
  200. eDO Taps Visa to Allow AI Agents to Purchase Travel (external link)PYMNTS. News. Published . Accessed .
  201. Modernising Payment Services Regulation (consultation) (external link)HM Treasury. Documentation, primary source. Published . Accessed .
  202. Linux Foundation Announces Operational Launch of x402 Foundation (external link)Linux Foundation. Announcement, primary source. Published . Accessed .
  203. 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 .
  204. Visa/Artemis: The $0.14 Reality of Agent Commerce (external link)Forkast. News. Published . Accessed .
  205. 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 .
  206. mpp-specs PR #230: Subscriptions: Intent + Stripe and Tempo Implementations (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  207. Agentic commerce liability is still being written (external link)Worldpay. Analysis. Published . Accessed .
  208. Regulation (EU) 2024/1689 (Artificial Intelligence Act) (external link)EUR-Lex (Publications Office of the EU). Standard, primary source. Published . Accessed .
  209. mppx PR #732: feat: add TAP and Web Bot Auth attestation (external link)GitHub (wevm/mppx). Repository, primary source. Accessed .
  210. Expanding identity support in mppx (MPP blog) (external link)Tempo Labs (mpp.dev). Announcement, primary source. Published . Accessed .
  211. Expanding identity support in mppx (blog) and advanced/identity.mdx (external link)Tempo (mpp.dev). Documentation, primary source. Published . Accessed .
  212. @x402/core CHANGELOG.md (external link)x402 Foundation. Repository, primary source. Accessed .
  213. Beyond the Mandate: A Systematic Security Analysis of the Agent Payments Protocol (AP2) (external link)arXiv. Paper, primary source. Published . Accessed .
  214. 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 .
  215. payment_ap2_mandate.json (v2026-08-25) (external link)UCP Authors. Specification, primary source. Published . Accessed .
  216. mpp-specs PR #328: Alternate payment credential header (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  217. Release v2026-08-25 (external link)UCP Authors. Announcement, primary source. Published . Accessed .
  218. EMVCo Requests Feedback on Framework for Secure, Interoperable and Scalable Card-Based Agentic Payments (external link)EMVCo. Standard, primary source. Published . Accessed .
  219. 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 .
  220. 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 .
  221. 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 .
  222. XRP Ledger Charge and Session Intents (draft-xrpl-charge-00, draft-xrpl-session-00) (external link)Ripple. Specification, primary source. Accessed .
  223. W3C/GS1 Workshop: E-commerce for Humans and AI Agents, agenda (external link)W3C and GS1. Video, primary source. Published . Accessed .
  224. mpp-specs PR #351: fix: renew IETF draft from Datatracker expiry (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  225. 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 .
  226. 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 .
  227. Visa and Mastercard team with Ant on Know Your Agent framework (external link)PYMNTS. News. Accessed .
  228. India plans AI-agent registry for UPI payments (external link)TechNode Global (relaying Reuters). News. Published . Accessed .
  229. Web Monetization (Draft Community Group Report) (external link)W3C Web Platform Incubator Community Group / Interledger Foundation editors. Specification, primary source. Published . Accessed .
  230. Google switched on AI Mode checkout for Shopify stores without asking (external link)PPC Land. News. Published . Accessed .
  231. x402 PR #2861: Specify exact Lightning on BIP-122 (external link)x402 Foundation. Repository, primary source. Published . Accessed .
  232. UCP repository main branch schemas (draft, commit ad9950b) (external link)UCP Authors. Repository, primary source. Published . Accessed .
  233. ERC-8004 agent census (measured read, 2026-09-26) (external link)CSOAI Ltd (Council of AI) on Hugging Face. Dataset, primary source. Published . Accessed .
  234. mpp-specs PR #280: docs: add generic session intent (external link)GitHub (tempoxyz/mpp-specs). Repository, primary source. Accessed .
  235. Mastercard Advances Agentic Commerce With New Trust and Intelligence Services (external link)Mastercard (Investor Relations, Business Wire release). Announcement, primary source. Published . Accessed .
  236. Monetization Gateway beta (external link)Cloudflare. Announcement, primary source. Published . Accessed .
  237. AP2 issues and pull requests opened since 2026-04-29 (GitHub issues API) (external link)GitHub. Dataset, primary source. Accessed .
  238. MAS Sets Out Supervisory Expectations on Responsible AI Adoption by Financial Institutions (external link)Monetary Authority of Singapore. Announcement, primary source. Published . Accessed .
  239. Guidelines on Artificial Intelligence Risk Management for Financial Institutions (external link)Monetary Authority of Singapore. Standard, primary source. Published . Accessed .
  240. 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 .
  241. x402.org home page Last 30 Days counters (observed 2026-10-11) (external link)x402 Foundation. Dataset, primary source. Accessed .
  242. 8004scan home page statistics (observed 2026-10-11, later fetch) (external link)8004scan (powered by AltLayer). Dataset. Accessed .
  243. mppscan: Machine Payments Protocol explorer (observed 2026-10-11) (external link)mppscan. Dataset. Accessed .
  244. OCC Promises Final Rule for GENIUS Act by November (external link)PYMNTS. News. Published . Accessed .

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