FetchSandbox as a Counterfact Alternative
Counterfact is useful when you want a local programmable API simulator. FetchSandbox is for teams who want to turn an OpenAPI spec into a hosted sandbox, docs portal, and runnable workflow surface without maintaining the simulator by hand.
Where Counterfact fits
Counterfact makes sense when a developer wants a local mock API they can program directly. If the team is comfortable owning the simulation code and running it locally, that control can be valuable.
Where FetchSandbox is different
FetchSandbox starts from the OpenAPI spec and builds a hosted surface around it: generated docs, seeded data, stateful resources, request logs, webhooks, and guided workflows. The goal is not to give you another local simulator to maintain. It is to give a developer, teammate, or coding agent a runnable environment they can use immediately.
Choose based on the job
Pick Counterfact when...
- You want a local-first simulator.
- You prefer hand-written behavior.
- Your team is comfortable maintaining mock code.
Pick FetchSandbox when...
- You want a hosted sandbox from an OpenAPI spec.
- You need docs, workflows, and logs in one place.
- You want agents or teammates to run the same flow.