What does Arga Labs do?
Arga Labs builds real-world sandboxes for testing and training AI agents, creating high-fidelity stateful 'digital twins' of third-party services like Salesforce, Workday, Slack, GitHub, Stripe and Gmail (API, CLI, MCP and UI). Teams seed scenarios in natural language, run automated evaluations per commit or PR, and capture full traces of provider calls and service-state changes. The company is a Y Combinator Spring 2026 company based in San Francisco.