Arga Labs secures $10 million in funding to build AI agent clones of Slack and GitHub

Arga Labs, a Y Combinator-backed startup with just four employees, has secured a $10 million seed funding round led by General Catalyst, with participation from BoxGroup, Emergence, Gradient, and SV Angel, according to Beating AI Express. The company specializes in building isolated test sandboxes for AI agents, replicating platforms such as Slack, GitHub, Salesforce, and Stripe to enable agents to run repeated operations before deployment. Traditional testing methods typically only fake API responses, missing many edge cases, while Arga replicates full software states, account permissions, webhooks, and error conditions. For example, sales agents can test on sandboxed Salesforce and HubSpot to identify duplicate contacts and avoid sending redundant emails. Arga currently supports over 30 software platforms. The firm notes it can replicate a SaaS backend in under 12 hours, and clients have launched more than 100,000 test environments in the past 16 weeks, with teams including Slash, Monaco, and Y Combinator utilizing its service. The new funding will be directed toward automated environment creation, as Arga develops a next-generation system to reduce SaaS replication time from hours to minutes. Its ultimate goal is to allow agents to discover new APIs, with the system automatically generating corresponding test environments for trial runs before agents access production systems.