How Anthropic Automated 100% of Its Pull Requests with Claude Code
Internal metrics and setup details from the tool's creator reveal a practical workflow for near-total code automation.
Practical Summary
Boris Cherny, creator of Claude Code, shares that 100% of Anthropic's pull requests and 80-90% of code reviews are now written by the tool. His workflow relies on slash commands to create automated loops, drastically reducing manual prompting.
Why It Matters
This provides concrete, high-impact evidence of an AI tool replacing core development workflows. For engineering leaders and developers, it demonstrates a path to significant efficiency gains and potential cost reduction in software development cycles.
Understanding the Core Automation
According to the creator, Claude Code handles 100% of Anthropic's pull requests and 80-90% of their code review process. This represents a near-total automation of two major developer workflows.
The Key Technique: Slash Commands and Built Loops
The primary method for this automation is the use of slash commands. Instead of prompting Claude for each task, the user builds operational loops that the agent runs autonomously. This shifts the workflow from interactive prompting to designing self-running processes.
Origin and Setup Context
Claude Code originated as a hackathon project where the creator gave the model a basic bash tool to control music via AppleScript. The current setup for these high automation rates involves specific configurations of slash commands, pre-approved tools, and custom agents. The creator suggests the detailed setup walkthrough in a podcast is more valuable than a paid course.
