Archal

Archal is a testing platform that gives coding agents and integration workflows isolated, stateful sandboxes for the APIs they depend on, so you can verify behavior end to end without ever touching live systems.

Through REST and MCP interfaces, it simulates the services your agents actually call on, including GitHub, Slack, Linear, Stripe, Datadog, Supabase, and more, responding with realistic behavior and consistent state across every step of a task.

Developers can spin up a sandbox with a known starting state, run their tasks against it, and then inspect every request and mutation the agent made. When something goes wrong, it is easy to see exactly what happened.

Environments can be reset at any time, making repeatable testing a routine part of your workflow. There are no production accounts to manage, no rate limits to work around, and no persistent test data left behind.