Claude Code mod
opm
An opinionated engineering workflow for Claude Code: brainstorm -> plan -> TDD execution with fresh-context subagents -> verification -> captured learnings. Lean reviewers, stack-specific patterns for TypeScript/React, Python and Flutter, and six light safety hooks.
Install
/plugin marketplace add harshadmadaye/OPM
/plugin install opm@opmMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: runs processes, sets env vars, reads files, reads env vars, persists state, draws
- Sees
- Bash calls, Edit calls, Write calls, every skill
- Hooks
session.startcommand.runturn.completetool.callskill.prompt
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
- harshadmadaye/OPM
- Folder
.- Marketplace
opm- Author
- Harshad Madaye
- License
- MIT
- Last updated
- 5 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is opm?
An opinionated engineering workflow for Claude Code: brainstorm -> plan -> TDD execution with fresh-context subagents -> verification -> captured learnings. Lean reviewers, stack-specific patterns for TypeScript/React, Python and Flutter, and six light safety hooks. It is a mod for Claude Code, from harshadmadaye/OPM on GitHub.
What can the opm mod access?
Its widest reach is "writes or runs" (runs processes, sets env vars, reads files, reads env vars, persists state, draws). It sees Bash calls, Edit calls, Write calls, every skill. Like any mod, it runs with your permissions.
How do I install opm?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add harshadmadaye/OPM and then /plugin install opm@opm.
Is opm popular?
harshadmadaye/OPM has 5 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 5 October 2026.
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