Nikolas Sargeant
Two significant AI agent payment tools landed on the same day Wednesday, as Visa's crypto division unveiled an experimental command line interface for agentic payments while Stripe-backed Tempo launched its payments-focused blockchain on mainnet.
Visa Crypto Labs head Cuy Sheffield announced Visa CLI, describing it as the first experimental product from the division. The tool gives AI agents the ability to make programmatic card payments without relying on API keys, a deliberate design choice, as API keys can expose sensitive information that agents may inadvertently leak. The practical pitch is straightforward: an AI agent can pay for what it needs as it operates, without the security overhead traditional payment integrations require.
Simultaneously, Tempo went live on mainnet with a blockchain purpose-built for high-throughput stablecoin transactions, currently among the most common use cases for AI agents transacting online. Alongside the chain launch, Tempo released the Machine Payments Protocol, an open standard developed in collaboration with Stripe, designed to give agents and services a standardized way to coordinate payments programmatically across different payment rails. Visa extended support for the protocol on its card network, Stripe is supporting cards, wallets, and other payment methods, and crypto fintech Lightspark extended support over the Bitcoin Lightning Network.
The dual launches reflect growing momentum around agentic payment infrastructure. Coinbase introduced its x402 standard for stablecoin-based agent payments in May, which was most recently integrated into Sam Altman's World in a developer toolkit released Tuesday. As AI agents become capable of executing increasingly complex workflows, the race to establish the dominant payment standard for machine-to-machine transactions is clearly accelerating.
