In September 2025, Stripe and OpenAI shipped Instant Checkout in ChatGPT, powered by a new open standard called the Agentic Commerce Protocol. US users could now buy from Etsy sellers — and soon over a million Shopify merchants — without leaving the chat. On its own, that’s a product launch. The signal is what happened around it: in roughly twelve months, nearly every major payments and AI player independently shipped a protocol for letting AI agents pay. When five rivals build the same unrequested thing at once, that’s not a coincidence. It’s a forecast.

The signal

Count the launches. OpenAI and Stripe released the Agentic Commerce Protocol, an open standard any merchant can adopt through its existing payment provider. Google announced the Agent Payments Protocol (AP2) on 16 September 2025 with more than sixty partners — including Mastercard, American Express, PayPal, Coinbase, Adyen, and Worldpay. Coinbase open-sourced x402, a standard that uses the dormant HTTP 402 “Payment Required” status code to let agents settle instantly in stablecoins, and stood up an x402 Foundation with Cloudflare. And the card networks moved in parallel: Visa launched its Intelligent Commerce program on 30 April 2025 and Mastercard unveiled Agent Pay a day earlier, each opening card rails to agent-initiated payments.

What’s striking is how similar the architectures are. Almost all of them separate two questions that a normal card swipe bundles together: did the user authorise this purchase — answered by a cryptographically signed “mandate” the agent carries — and is the payment valid — answered by whatever rail moves the money, card, bank transfer, or stablecoin. Five independent teams converged on the same primitive: a verifiable proof of intent that an autonomous agent can present on a human’s behalf.

Why it matters

Consumers did not ask for this. There was no groundswell demanding that chatbots hold their credit cards. The rails are being laid ahead of demand, which is exactly what infrastructure players do when they believe a behaviour is inevitable and they want to own the standard before it arrives. The prize isn’t this year’s checkout volume — it’s the trust layer. Whoever owns the mandate format, the place where “the user really authorised this” gets verified, owns the toll booth for agent commerce, the way card networks own the toll booth for swipes.

For merchants and founders, the near-term move is unglamorous but urgent: get discoverable and transactable by agents, because the surface where purchases happen is shifting from your website to someone’s assistant. For investors, the signal is that agent-to-agent commerce — software paying software, without a human in the loop on each transaction — has crossed from thought experiment to plumbing. When the rails exist, the traffic follows.

The Charaka View

Manthan Intelligence has been building for this since before the protocols had names. Our own analysis pipeline returns agent-callable payment objects directly in its API responses — a calling agent can complete a purchase on a user’s behalf without a human ever loading a checkout page. We did it because the logical endpoint of agentic software is agentic commerce: if an agent can do the work, it can also pay for the inputs the work requires.

That is why this convergence reads, to us, as one of the clearer signals of the year. Standards wars are usually fought after a market exists; this one is being fought before it does, which tells you how certain the largest players are that it’s coming. The open question is governance — five overlapping protocols is not interoperability, and the messy middle of competing mandate formats is where the next year of fighting happens. Watch which standard the card networks ultimately route through. That choice, more than any single product launch, will decide who collects the toll when agents start spending on our behalf.

This analysis draws on the Stripe–OpenAI Instant Checkout announcement, OpenAI’s “Buy it in ChatGPT” post, Google Cloud’s AP2 announcement, Coinbase’s x402 documentation, and American Banker on the Visa and Mastercard agent-payment launches. Human editorial oversight applied.

This analysis is informational and does not constitute investment advice, a research report, or a recommendation to buy, sell, or hold any security.

Charaka Notes by Manthan Intelligence. Subscribe