Z.ai open-sources the ZCode coding agent stack

Z.ai has released its ZCode repository under the Apache License 2.0. The pnpm monorepo includes the Electron desktop client, browser interface, backend services, shared components, and Agent CLI runtime.

The TypeScript project passed 4,000 GitHub stars during its first day. ZCode runs on macOS, Windows, and Linux, with interfaces for desktop, browser, and terminal use.

One repository, three interfaces

ZCode supplies the application layer around a coding model, connecting agent workflows to project files, shell commands, user interfaces, and supported messaging services. Developers can inspect and modify the client, server, UI components, and agent runtime from one workspace.

The CLI distribution exposes three modes through the zcode command. Running it without arguments opens the terminal UI, --web starts the local browser interface, and other arguments pass through to the Agent CLI. These modes run without Electron.

zcode
zcode --web
zcode --web --workspace /path/to/project --port 3030 --no-open
zcode --help

GLM gets first-class support

Z.ai’s product site presents ZCode as the official harness for GLM-5.3, with optimizations for coding, reasoning, and multi-agent workflows. It also advertises GLM-5.3-Flash support for screenshot and image analysis. The supported commercial path pairs ZCode with a BigModel GLM Coding Plan subscription.

The same site says a BigModel subscription can provide GLM access to more than 20 coding clients, including Claude Code, Codex, Roo Code, Cline, Kilo Code, OpenCode, Crush, Goose, Cursor, Windsurf, and Trae. That compatibility claim concerns GLM access from those clients. Teams evaluating alternate models inside ZCode should inspect the runtime’s provider adapters and configuration; the Apache license allows them to add or replace integrations.