Welcome to Kitten
Kitten is a fast, GPU-accelerated, local-first API client built in Rust on GPUI. Collections live on your machine, sync through your own git, and import straight from Postman, Bruno, Insomnia and Yaak.
Kitten is in beta. Download a build from the download page, or read what changed in the release notes.
Bring your collections
Kitten reads Postman collections (v2.0 and v2.1) and environments, Bruno .bru folders and JSON exports, Insomnia v4 and v5 exports, and Yaak workspace exports. Requests, environments, auth and scripts come across; the import report lists anything that needed attention.
Pre-request scripts and tests are translated to Rhai, the scripting language Kitten runs in a sandbox. Read how that works in Scripts.
Scripts
If you come from Postman or Bruno, start with the side-by-side tables: