Claude Code mod
runtime
harnist runtime mod — per-role subagent loading: trims skill list, MCP notes and CLAUDE.md per subagent type, enforces spawn rules and tool bans
Install
/plugin marketplace add Dominic-DK/harnist
/plugin install runtime@harnistMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L1Reads: reads files, reads env vars
- Sees
- subagent spawns
- Hooks
session.startcommand.runagent.spawnprompt.attachmenttool.check
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- Dominic-DK/harnist
- Folder
runtime- Marketplace
harnist- Author
- Dominic Lee
- License
- MIT
- Last updated
- 28 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is runtime?
harnist runtime mod — per-role subagent loading: trims skill list, MCP notes and CLAUDE.md per subagent type, enforces spawn rules and tool bans It is a mod for Claude Code, from Dominic-DK/harnist on GitHub.
What can the runtime mod access?
Its widest reach is "reads" (reads files, reads env vars). It sees subagent spawns. Like any mod, it runs with your permissions.
How do I install runtime?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add Dominic-DK/harnist and then /plugin install runtime@harnist.
Is runtime popular?
Dominic-DK/harnist has 3 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 28 October 2026.
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