Arga Labs
Arga Labs is a YC Spring 2026 (P26) company. Based in San Francisco, CA, USA. Team of 4.
About Arga Labs
Summary
Arga Labs builds sandbox environments for testing AI agents before they touch production systems. Engineering teams deploy their agents against stateful replicas of external services, including Slack, GitHub, Stripe, Gmail, and dozens more, using the same APIs, SDKs, and MCP tool calls as the real thing. The product replaces manual integration testing and risky production experiments by letting teams spin up thousands of parallel sandbox instances, seed them with natural language, and observe real agent behavior across complex, multi-service workflows.
Business model
Book-a-demo sales with a pricing page, indicating paid plans; specific pricing structure not public.
Go-to-market
Engineering teams at B2B software companies are the buyer; they start through a book-a-demo flow or self-serve sandbox access after connecting their agent with a one-line code change.
From the Y Combinator listing
Real-world sandboxes to test agents and agent-facing software
We build environments to test your app and agents against the real world. Deploy your code/agent into a sandbox that runs against replicas of external services (Stripe, Slack, Google Drive, etc.). Twins support the same APIs, MCP tool calls & SDKs as the real software, and you can spin up thousands of instances in parallel and seed them using natural language. Run real workflows, surface edge cases, and observe how your code/agents actually behave before hitting production.
Facts
- B2B / B2B
- San Francisco, CA, USA
- 4
- Active
- Early
Founders (2)
- Phillip Li
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