SpaceXAI Grok Engineer Ships 2,000 PRs a Month Using pstack Workflow

Lauren Tan, an engineer on SpaceXAI's Grok team, published a guide to her agentic pstack workflow that ships up to 2,000 pull requests per month. She calls verification the key skill, with the agent checking its own work via CLI and a structured app runtime.

• pstack ships up to 2,000 PRs a month, nearly 100 per workday
• Verification is the key skill Tan calls critical infrastructure
• Agent runs the app via CLI, checks state, gets JSON responses
• No ready runtime exists for distributed systems with hundreds of services