We’re working on a new series that explains how to build AI agents that are true economic actors with Circle Agent Stack. It will include practical tutorials you can follow with any AI agent harness. Can’t wait to share what we’ve been building. Stay tuned.

If you live in the UK, this is how to turn your fan into AC . - Put some salt in a water bottle - Freeze it properly - Attach it to the back of your fan - Put a towel at the base so water doesn’t fill your floor when the ice melts This can last for about 6 hours or more blowing cold air any direction. The salt helps it stay colder for longer because salt lowers the freezing point of water.

Today, we launched Circle Agent Stack, and I want to explain the core problem this solves. AI agents can browse, reason, write code, call tools, and complete tasks. But they still struggle with one very basic thing: paying for services on the internet. Let’s say an agent needs to call a paid API. That sounds simple. But the normal internet payment flow is built for humans. - Create account. - Add card. - Choose plan. - Go through checkout. - Approve payment. - Wait for access. That works for people. It does not work for autonomous software. An agent does not need a checkout page. It needs a wallet, a price, and a payment protocol. That is what Circle Agent Stack enables. With Agent Wallets, developers can give AI agents wallets funded with USDC. With Circle CLI and Circle Skills, agents in tools like Codex, Claude Code, and Cursor can discover services and transact programmatically. And with Nanopayments powered by Circle Gateway, agents can pay for APIs, data, compute, and services in real time. This matters because the natural pricing model for agentic services is usage-based. Agents should be able to pay for resources at the moment they need them, without being forced through a card form, checkout page, or manual approval flow. From a developer perspective, you can create an agent wallet, fund it with USDC, and let your agent start paying for services. From a seller perspective, your service can accept USDC from agents without forcing them through a human payment flow. The bigger shift is simple: APIs can become paid resources for agents. Software can pay software for useful work. That is agentic commerce. We are live today. Start building here