Harness profile

Zed Agent

GPL-3.0-or-laterRust88.9k GitHub stars (Aug 2026)

MakerZed Industries

LicenseGPL-3.0-or-later

StackRust

ModelsDrives Claude, Codex or OpenCode over the Agent Client Protocol

Runs whereInside the Zed editor

Behavior changed byThe editor

Durable memoryDepends on driven agent

Drives other agentsYes (via ACP)

Best for

Editor-native work where you watch the diff as it lands.

Main weakness

Assumes you have adopted the editor, and the review surface is catching up: with an external agent the diff and accept-reject UI can be missing entirely (still open as of Aug 2026). GPL license.

Official docs / repo · Not sure? Run the chooser

Profile facts from the winder.ai comparison of nine agent harnesses (table checked Aug 19, 2026; DeepSeek Harness star count updated Sep 25, 2026 from the live GitHub repo) and vendor documentation. If something here is stale, the vendor page wins - tell us via the kit signup and we will fix it.