# Visa, Google and Stripe All Want to Be How Agents Pay. Who's Building What?

*Noden blog · 2026-10-10 · https://getnoden.com/blog/cards-vs-open-rails-agent-payments*

If the agent payment news of 2026 left you with a list of acronyms and no clear picture, this is the map.

## Two different jobs

Most of the confusion clears once you separate two kinds of purchase.

**Agents shopping for people.** Your assistant books a flight or reorders groceries. The amounts are ordinary, the buyer is a consumer, and cards work fine.

**Agents buying from machines.** Your agent pays another service a fraction of a cent for one lookup, thousands of times a day. Card fees and card minimums make this impractical.

Different companies are solving different halves.

## The card networks

- **Visa** launched Intelligent Commerce Connect on 8 April 2026, a single integration for accepting agent-initiated payments across several protocols. On 10 June it announced a partnership with OpenAI to bring Visa payments, with spending limits and fraud controls, to ChatGPT.
- **Mastercard** offers Agent Pay, which uses tokens made for agents so purchases can be tracked and authenticated.

Both focus mainly on the first job: agents buying on behalf of cardholders.

## Google and the retailers

Google announced the **Universal Commerce Protocol** on 11 January 2026 with Shopify, Etsy, Wayfair, Target and Walmart. It gives agents a common way to talk to any merchant. Its companion, the **Agent Payments Protocol (AP2)**, records what the user authorized as a tamper-proof mandate. Google donated AP2 to the FIDO Alliance in April.

## Stripe

Stripe and Tempo launched the **Machine Payments Protocol** on 18 March 2026. It targets the second job: paying for a service inside the same web request, by card, stablecoin or Lightning.

## The open rails

- **x402** moved from Coinbase to the Linux Foundation on 2 April 2026, with forty member organizations at launch, the card networks among them.
- **L402** runs on Bitcoin's Lightning Network and has been in development at Lightning Labs since 2020.
- In September, **Block joined the x402 Foundation and added Lightning support.**

## What to take from it

1. **These mostly stack, not compete.** One protocol describes the shop, another proves authorization, another moves the money.
2. **The same names appear everywhere.** Visa, Mastercard, Google and Stripe all sit in the x402 Foundation. Nobody is betting on a single winner.
3. **Choose by purchase size.** Consumer-sized purchases suit cards. Sub-cent, high-volume calls suit Lightning or stablecoins.

A caution on forecasts: you will see projections of a trillion dollars or more in agent-driven commerce by 2030. They are projections. Current machine-to-machine volume is still small.

Noden sits in the second half of the map: agents buying capabilities per call, paid with credits or over Lightning. [See how it works](https://getnoden.com).

## Sources

- [Visa Partners with OpenAI to Bring Visa Payments to ChatGPT, Stellagent](https://stellagent.ai/insights/visa-openai-agentic-commerce-partnership)
- [E-commerce and AI Commerce News Digest, April 9, 2026, Stellagent](https://stellagent.ai/insights/ec-ai-news-digest-2026-04-09)
- [Mastercard, Visa Redefine Trust in Agentic Transactions, CardRates](https://www.cardrates.com/news/mastercard-visa-redefine-trust-in-agentic-transactions/)
- [Google's Universal Cart, PPC Land](https://ppc.land/googles-universal-cart-wants-to-follow-you-everywhere-you-shop/)
- [Stripe and Tempo publish open payment standard for AI agents, Stellagent](https://stellagent.ai/insights/stripe-machine-payments-protocol-m2m)
- [Linux Foundation launches the x402 Foundation](https://www.linuxfoundation.org/press/linux-foundation-is-launching-the-x402-foundation-and-welcoming-the-contribution-of-the-x402-protocol)
- [Block brings Bitcoin Lightning payments to x402, Cointelegraph](https://cointelegraph.com/news/block-brings-bitcoin-lightning-payments-to-x402-for-ai-agents)