Radar / AI coding tools / ZCode
ZCode: Z.ai's Apache-2.0 open-source coding-agent harness, open-sourced 2026-09-21
Z.ai's official coding-agent harness, an Electron desktop app plus browser interface, terminal agent and agent runtime built for GLM models, open-sourced under Apache-2.0 on 2026-09-21. The release came three days after users caught the desktop client silently packaging entire git histories (86.6% of the payload was .git) into encrypted archives for upload to Z.ai's cloud.
Why it matters
A rare look at a frontier lab's first-party agent harness source, published under Apache-2.0 only because of a privacy scandal; it exposes the real client-side design of a Claude-Code-style system, with the upload pipeline scrubbed from the public code.
What you could build with it
A developer-tools team can fork the Apache-2.0 harness to ship a GLM-tuned or self-hosted coding agent with its own sandboxing and telemetry policy, instead of wrapping a closed CLI.
Does it hold up?
Usable with caveats: the open-source drop is two consolidated commits with no dev history, Linux is still beta, but the desktop harness has real users on r/ZaiGLM reporting a high cache rate and few tool-call errors.
Built with ZCode
- Z.ai open-sources ZCode after its coding agent uploaded Git historiesarticle · Investigative piece documenting the encrypted git-history upload scandal and the Apache-2.0 release that followed.
- ZCode memory architecture teardowngithub · Agent-memory atlas report dissecting ZCode's per-project Markdown memory store, its permission rules and the gaps in verification.
- Z.ai ZCode harness surveygithub · Independent harness survey covering ZCode's model+harness co-design, goal-mode sessions and Claude-Code-compatible extensibility.
Learn more
deep dive on the scandal and release →
First spotted on github: source.
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