A lightweight harness that adds safety guards, intelligent model routing, and multi-agent orchestration — all through native hooks. Zero config, instant boost.
claude plugin install oh-my-harness@oh-my-harness
OMH believes the best harness is one you barely notice. Warnings instead of walls, reminders instead of restrictions. Install once — it works everywhere.
OMH hooks into Claude Code's lifecycle at every stage.
Auto-detects your project's language, test framework, and linter. Injects conventions as context.
[omh:convention-detect]
Checks for ambiguity and multi-task requests. Asks clarifying questions or suggests plan mode.
[omh:ambiguity-guard]
[omh:auto-plan]
Warns before destructive commands. Routes subagents to the right model tier. Enforces commit conventions.
[omh:dangerous-guard]
[omh:model-routing]
Verifies tests exist for changed code. Saves context snapshots before compaction.
[omh:test-enforcement]
13 features that activate automatically. No manual intervention needed.
Ambiguity detection, dangerous operation warnings, scope restrictions. Guide with warnings, never block.
Automatically delegates tasks to the right model tier — Haiku for lookups, Sonnet for implementation, Opus for architecture.
Spawn parallel Claude agents in tmux panes with git worktree isolation. Preview diffs, merge when ready.
Scans your project at session start — detects language, test runner, linter, and formatter. Supports Node, Python, Go, Rust, Java, Kotlin.
Verifies tests exist after every code change. Auto-generates project-specific skills for code review, test writing, and linting.
Cost-efficient delegation. The right model for the right task.
File lookups, simple questions, code exploration, pattern searches.
"Find all TODO comments"
"What's in this file?"
Bug fixes, feature implementation, debugging, test writing.
"Fix this validation bug"
"Write unit tests"
System design, complex refactoring, security review, deep analysis.
"Design the auth system"
"Security audit"
OMH replaces Claude Code's default status line with a live dashboard.
claude plugin install oh-my-harness@oh-my-harness
/harness-setup
Smart defaults activate automatically.