Event timeline
21 events, 29 April 2025 to 20 October 2026. Full dataset: events.json.
2026-10-20 — Visa / BILL / Billtrust
First live pilot: trusted AI agents initiate and complete approved buyer invoice payments end-to-end through supplier portals. [pilot]
Region: United States · Stakeholders: Issuer, Acquirer, Merchant, PSP, Card network · Settlement: Card
What it means for the payments chain: The first live end-to-end agent payment flow for approved B2B invoices proved the control model in production: approved instructions first, agent execution second, supplier oversight preserved.
Sources: Visa press release, Billtrust
2026-10-20 — Mastercard
Agent Pay for Machines opened to developers in early access at Cloudflare Connect; demo: 9 payments, 2 merchants, 1 approved budget. [early-access]
Region: Global · Stakeholders: PSP, Merchant, Card network · Settlement: Multi-rail
What it means for the payments chain: Developers got the machine-payment toolkit (APIs, sandbox): 9 payments, 2 merchants, 1 budget demonstrated budget-bounded agent spending with signed vouchers.
Sources: Crypto Briefing, Payspace Magazine
2026-10-15 — Google
Google's Universal Cart began rolling out to US users in Search and the Gemini app, with checkout tied to UCP. [product]
Region: United States · Stakeholders: Merchant, PSP · Settlement: Card
What it means for the payments chain: Agent-assisted multi-retailer carts reached a mass consumer surface in the US; checkout still hands off to retailers in many cases.
Sources: TechCrunch: Google's Universal Cart launches in the US (15 Oct 2026)
2026-09-30 — Mastercard
Mastercard published the Agent Pay Trust Framework (identity, intent, controls, trusted execution, intelligence). [product]
Region: Global · Stakeholders: Card network, Issuer, Acquirer, Merchant · Settlement: Card
What it means for the payments chain: Trust vocabulary standardized (identity, intent, controls, execution, intelligence), but the loss split on disputed agent purchases stayed undisclosed — the framework names the questions without pricing the risk.
Sources: Banking News AI tracker
2026-07-14 — Linux Foundation
The x402 Foundation launched under the Linux Foundation to govern agent payments, with 40 member organisations. [standard]
Region: Global · Stakeholders: PSP, Card network, Merchant · Settlement: Stablecoin
What it means for the payments chain: Machine-payment governance went neutral under the Linux Foundation with 40 members, giving the rail a standards path independent of any single company.
Sources: Agentic Plug tracker
2026-06-10 — Mastercard
Mastercard launched Agent Pay for Machines, for permissioned machine-to-machine payments across cards, accounts and stablecoins, with 30+ participants. [announced]
Region: Global · Stakeholders: Card network, Acquirer, PSP, Merchant · Settlement: Multi-rail
What it means for the payments chain: Machine-to-machine payments gained a network service with permissioning and guaranteed multi-rail settlement, so high-frequency agent payments don't need a human per transaction.
Sources: Mastercard press release: Mastercard launches Agent Pay for Machines (10 Jun 2026), Banking News AI tracker, Agentic Plug tracker
2026-06-10 — Visa / OpenAI
Visa and OpenAI announced a strategic collaboration to enable secure Visa payments within agentic commerce. [partnership]
Region: Global · Stakeholders: Card network, Merchant, PSP · Settlement: Card
What it means for the payments chain: The largest card network tied agent payments to the largest consumer AI surface, signaling that agent checkout will arrive through existing AI products rather than new ones.
2026-05-19 — Google
Google unveiled Universal Cart and expanded UCP checkout at I/O 2026. [product]
Region: United States · Stakeholders: Merchant, PSP · Settlement: Card
What it means for the payments chain: Consumer agent checkout reached a major surface (Search, Gemini app): merchants face agent-initiated carts through a shared commerce standard rather than one-off integrations.
Sources: Agentic Plug tracker
2026-04-28 — Google
AP2 v0.2 released and AP2 donated to the FIDO Alliance; v0.2 adds Human Not Present payments and Verifiable Intent (co-developed with Mastercard). [standard]
Region: Global · Stakeholders: Card network, Issuer, PSP, Merchant · Settlement: Card
What it means for the payments chain: Authorization governance went neutral: FIDO stewardship means authorization and dispute rules for agent payments are written in the open, not in one vendor’s terms.
Sources: Google blog: donating AP2 to the FIDO Alliance, releasing AP2 v0.2 (28 Apr 2026), FIDO Alliance: standards for trusted AI agent interactions (28 Apr 2026), inriver explainer, nohacks FAQ
2026-04-14 — American Express
American Express announced its ACE developer kit and Agent Purchase Protection, a commitment to protect eligible Card Members from charges related to errors by registered AI agents. [announced]
Region: Global · Stakeholders: Card network, Issuer, Merchant · Settlement: Card
What it means for the payments chain: The first network commitment to absorb agent-error losses for cardholders, limited to registered agents with authenticated intent and subject to terms not yet published.
Sources: American Express press release: ACE developer kit and Agent Purchase Protection (14 Apr 2026)
2026-04-08 — Visa
Visa announced Intelligent Commerce Connect, a single integration for accepting agent-initiated payments across protocols. [product]
Region: Global · Stakeholders: Card network, Acquirer, Merchant, PSP · Settlement: Card
What it means for the payments chain: Acceptance consolidated: one integration lets merchants accept agent payments across protocols, shifting the merchant's problem from per-protocol integration to agent verification.
Sources: Medium / thesoftix, thesoftix
2026-03-18 — Stripe / Tempo
Stripe and Tempo launched the Machine Payments Protocol alongside Tempo's mainnet; Visa contributed card-payment specifications. [protocol]
Region: Global · Stakeholders: PSP, Merchant, Card network · Settlement: Multi-rail
What it means for the payments chain: A second HTTP-native machine-payment protocol arrived with a large PSP behind it, accepting stablecoins and fiat.
Sources: Stripe blog: Introducing the Machine Payments Protocol (18 Mar 2026), Fortune: Stripe and Tempo launch MPP; Visa contributed card specifications (18 Mar 2026)
2026-03-02 — Mastercard / Santander
Europe's first live end-to-end payment executed by an AI agent, on Santander's live payments infrastructure via Mastercard Agent Pay. [pilot]
Region: Europe · Stakeholders: Issuer, Card network, Merchant · Settlement: Card
What it means for the payments chain: Europe's first live agent payment proved the model inside a regulated bank's live infrastructure, moving agent payments from announcements to controlled production.
Sources: ACP Ready directory
2026-01-11 — Google
Google announced the Universal Commerce Protocol, built with Shopify, Etsy, Wayfair, Target and Walmart and endorsed by 20+ more. [protocol]
Region: United States · Stakeholders: Merchant, PSP · Settlement: Card
What it means for the payments chain: Retail checkout by agents gained a shared commerce standard backed by major US retailers, with the merchant as merchant of record.
Sources: Google: NRF 2026 remarks announcing UCP (11 Jan 2026)
2025-12-18 — Visa
Visa said hundreds of agent-initiated transactions had been completed with partners; US pilots in closed beta, with Asia Pacific and Europe pilots expected in early 2026. [pilot]
Region: United States · Stakeholders: Card network, Issuer, Merchant · Settlement: Card
What it means for the payments chain: Visa Intelligent Commerce moved from announcement to controlled production transactions with named partners, still short of general availability.
Sources: Visa press release: Visa and Partners Complete Secure AI Transactions (18 Dec 2025)
2025-12-11 — Coinbase
x402 V2 released. [protocol]
Region: Global · Stakeholders: PSP, Merchant · Settlement: Stablecoin
What it means for the payments chain: The machine-payment rail matured to multi-chain with session-based payments, widening which assets and chains agent payments can settle on.
Sources: Crypto News explainer
2025-10-14 — Visa
Visa and Cloudflare introduced the Trusted Agent Protocol, an open framework for agents to send signed identity, intent and consumer-recognition signals to merchants. [protocol]
Region: Global · Stakeholders: Card network, Merchant, PSP · Settlement: None (identity layer)
What it means for the payments chain: Merchants gained a way to tell a registered agent from an unknown bot at the request level, separating agent identity from spend authority.
Sources: Visa press release: Trusted Agent Protocol (14 Oct 2025)
2025-09-29 — OpenAI / Stripe
OpenAI launched Instant Checkout in ChatGPT and the Agentic Commerce Protocol, co-developed with Stripe, for US users buying from US Etsy sellers. [product]
Region: United States · Stakeholders: Merchant, PSP · Settlement: Card
What it means for the payments chain: A consumer AI surface began completing purchases while the merchant stayed merchant of record and charged through its own payment provider.
Sources: OpenAI: Buy it in ChatGPT, Instant Checkout and the Agentic Commerce Protocol (29 Sep 2025)
2025-09-16 — Google
Google announced the Agent Payments Protocol (AP2). [standard]
Region: Global · Stakeholders: Card network, Issuer, PSP, Merchant · Settlement: Card
What it means for the payments chain: Authorization evidence became portable: signed mandates let any party verify buyer authorization, separating proof of authorization from settlement.
Sources: inriver explainer, Crypto News explainer
2025-05-06 — Coinbase
Coinbase launched x402, an open protocol for HTTP-native machine-to-machine payments. [protocol]
Region: Global · Stakeholders: PSP, Merchant · Settlement: Stablecoin
What it means for the payments chain: Machine payments gained an HTTP-native rail: servers can quote prices and settle in stablecoins without accounts or API keys, moving settlement outside card clearing.
Sources: Crypto News explainer
2025-04-29 — Mastercard
Mastercard announced Agent Pay, its card-based program for agent-led purchases using tokenized payment credentials. [product]
Region: Global · Stakeholders: Card network, Issuer, Acquirer, Merchant · Settlement: Card
What it means for the payments chain: Card networks entered agent payments: agent purchases ride existing card rails with tokenized credentials, so issuers and acquirers process agent orders through familiar authorization and dispute queues.
Sources: Crypto News explainer