Harbor is the internal tool Stripe teams use to prototype with an AI agent. This post covers how it compiles prototypes in the browser, how the agent inspects its own work, and how comments stay anchored when the page is rewritten.

• AI
• Developer Productivity
• Engineering

This is the story of how our Developer Productivity team extended and rolled out rubyfmt, our Rust-based zero-config, ultra-fast autoformatter across the world's largest Ruby codebase.

• Engineering
• Developer Productivity

Stripe's Selective Test Execution system employs some clever tricks to allow us to continue scaling our team and our codebase while only running around 5% of our tests on average. Find out how it works!

• Developer Productivity
• Engineering
• Testing

Minions are Stripe’s homegrown coding agents, responsible for more than a thousand pull requests merged each week. Though humans review the code, minions write it from start to finish. Learn how they work, and how we built them.

• AI
• Developer Productivity
• Engineering

Minions are Stripe’s homegrown coding agents, responsible for more than a thousand pull requests merged each week. Though humans review the code, minions write it from start to finish. Learn how they work, and how we built them.

• AI
• Developer Productivity
• Engineering

Stripe Billing allows businesses to manage customer relationships with recurring payments, usage triggers, and other customizable features.

• Billing
• Developer Productivity
• Engineering
• Testing

Markdoc delivers a good user experience without compromising the authoring experience. It enables writers to express interactivity and simple page logic without mixing code and content.

• Open Source
• Developer Productivity
• Engineering

On Sunday, March 6, we migrated we converted more than 3.7 million lines of code with a single pull request. The next day, hundreds of engineers came in to start writing TypeScript for their projects.

• Developer Productivity
• Open Source
• Engineering

Stripe's continuous integration system is responsible for orchestrating build pipelines and executing tens of thousands of test suites. To meet our exceptionally high security bar, we lean on a combination of open-source tech and novel engineering.

• Developer Productivity
• Infrastructure
• Engineering

Stripe uses Sorbet to type check our 15 million lines of Ruby code, making engineers more productive. Here's why we love Sorbet.

• Developer Productivity
• Open Source
• Engineering