How Stripe scaled fraud detection and improved it with rapid agent-assisted experimentation for the Radar product.

• Engineering
• AI Research
• AI

SFT helps Stripes make more precise risk assessments. We explain the training approach and investigate what the model learns about legitimate businesses.

• AI Research

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
• AI Research

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
• AI Research

The low-level code that makes a payment go through is getting cheap, fast. What is becoming valuable is the judgment above it: knowing what the money is supposed to do and making sure the code obeys it.

• AI
• AI Research
• Payments

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
• AI Research