An offline REST API client that keeps your data yours
TiefWise runs entirely on your machine. There's no account to create, nothing syncs to a vendor cloud, and it works with the network cable unplugged. Your requests, environments, and API keys stay local — full stop.
Free · v1.2.0 · macOS & Windows
What "local-first" actually means here
Requests stored on disk
Every collection, request, and response lives in local storage on your computer — not in a hosted workspace you have to log into.
Works with no internet
The app itself needs no connection to open, organize, or send requests to services on your own network. Ideal for air-gapped and restricted environments.
No account, no sign-in
Install and start testing. There's no registration wall between you and your first request, and no identity tied to your work.
No cloud sync, no telemetry
Nothing is uploaded to us in the background. The only traffic TiefWise generates is the API requests you explicitly send.
Why local-first matters for API keys
The moment credentials land in a cloud-synced workspace, they travel: replicated to a vendor's servers, pulled down onto every teammate's device, and captured in sync history and backups. That's a large, hard-to-audit surface for secrets you'd rather keep close.
Because TiefWise stores environments and auth locally, your bearer tokens, API keys, and secrets never leave your machine unless a request you wrote sends them to the endpoint you chose. Fewer copies, fewer places to leak from.
Test APIs without the cloud tax
Under 8 MB, free, and offline by default. The full feature tour lives on the TiefWise product page.