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Archal

Archal is a YC Summer 2026 (S26) company. Based in San Francisco, CA, USA. Team of 2.

  • Artificial Intelligence
  • Developer Tools
  • API
  • Infrastructure

About Archal

GPAgent's own fund-neutral profile, written from public information. Updated Oct 4, 2026.

Summary

Archal builds stateful API sandboxes for developers testing AI agents against third-party integrations. Each sandbox spins up isolated, production-like environments for services such as Stripe, GitHub, HubSpot, and Slack, replacing shared test accounts and the dirty state they accumulate. Agent developers, connector teams, and integration engineers use it to run tests, CI jobs, and reinforcement-learning rollouts against a known baseline that resets in milliseconds.

Business model

$20 in usage credits included at signup, billed by consumption beyond that

Go-to-market

Agent developers, connector teams, and integration engineers are the target buyers; adoption starts self-serve through a free credit tier and a quickstart flow, with a book-a-call path for larger teams.

From the Y Combinator listing

How Archal describes itself in Y Combinator's public directory.

API sandboxes, built for AI agents

Archal provisions sandboxes with the API environments your CI, tests, and evals need. Your coding agent can start the sandbox & environments, connect to your API integrations, run tests, and inspect state changes. Sandboxes and environments are startable within seconds and take milliseconds to reset.

Facts

Industry
B2B / B2B -> Infrastructure
Location
San Francisco, CA, USA
Team size
2
Status
Active
Stage
Early

Founders (2)

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