Stripe built an agentic payment method factory from over 100 reusable prompts, hardened by agents observing implementation runs, and kept them current by feeding back each run's learnings.

• Engineering
• AI

How Stripe used WebMCP to accelerate agent purchases from the browser.

• Engineering
• AI

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

To minimize failed payments for our users, Stripe targets 99.9995% reliability. As traffic grew beyond 1.6% of global GDP, this put intense strain on the service mesh. This is the story of the infrastructure team replacing Envoy, a popular solution, with an alternative architecture.

• Engineering
• Infrastructure

Stripe's Knowledge AI Platform is our versatile AI agent platform built to handle diverse non-coding knowledge work, from quick queries to complex, multi-day projects. By connecting employees to over 1,000 internal tools and skills, it enables secure, enterprise-scale productivity across the organization.

• Engineering
• AI

Discover how we modeled our MongoDB infrastructure as a traversable graph and then use pathfinding algorithms to dynamically compute and execute recovery plans. This automated approach reduced pager volume by 30% (~200 pages/year), eliminated 12 days of unhealthy shard states annually, and supports new shard layouts with zero manual effort.

• Engineering

Most of the world's money still moves in batches. A wire submitted at 2pm might settle by end of day, if you made the cutoff. ACH takes one to three business days. Cross-border payments touch correspondent banks, each adding lag and a fee. Stripe has spent over a decade building the Global Payments and Treasury Network (GPTN), a programmable infrastructure for global money movement that batches transfers to reduce cost, nets opposing flows to minimize actual cash moved, and routes through the optimal path between accounts. Under the hood, it's a graph with accounts as nodes, and payment rails as edges.

• Engineering
• Crypto

When a Stripe engineer makes changes to an API, merging the PR is just the beginning. Stripe maintains a vast developer product suite that needs to stay in sync with the API changes we frequently ship:

• Engineering

We all know the stereotypes of working at enterprise tech companies: endless bureaucracy and behemoth codebases running on a years-old language version. Most organizations know they should modernize quickly, but haven’t figured out how to build an upgrade path compatible with a large codebase. The recurring cost of upgrading keeps most large JVM codebases trailing behind the latest Java versions.

• 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

In this post we’ll dive into how we built a virtual cashless payment method that works for prepaid and Stripe-issued credits, and cleanly integrates with our accounting, compliance, and other frameworks.

• Engineering
• Payments

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

Among global business leaders surveyed, 84% agree that adapting pricing quickly will be a key competitive advantage. Our new real-time analytics system for Stripe Billing helps them spot customer trends just as they emerge.

• Billing
• Infrastructure
• Engineering

Our new jurisdiction resolution system (JRS) is a faster, less resource-intensive solution to the challenging problem of determining tax obligations in places with complicated, overlapping tax jurisdictions.

• Tax
• Engineering

In this blog post we’ll share an overview of Stripe’s database infrastructure and discuss the design and application of the Data Movement Platform.

• Infrastructure
• Engineering

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

• Billing
• Developer Productivity
• Engineering
• Testing

This blog discusses the technical details of how we built Shepherd and how we are expanding the capabilities of Chronon to meet Stripe’s scale.

• Machine Learning
• Infrastructure
• Open Source
• Fraud Detection
• Engineering

Technical details on how Stripe built Ledger, a state-of-the-art money movement tracking system, including how teams at Stripe interact with the data quality metrics that underlie our payment processing network.

• Engineering
• Payments
• Infrastructure

What makes Radar, Stripe’s fraud prevention solution, so powerful? Here are some of the key decisions made—and lessons learned—in the years it has taken to build it.

• Machine Learning
• Fraud Detection
• Security
• Engineering

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

Abstracting away the complexity of payments has driven the evolution of our APIs over the last decade. Learn more about Stripe payments APIs here.

• Engineering
• Payments