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everything-claude-code-harness — Claude Code skill: agents, hooks

The skill builds out an agent harness: subagents, slash commands, memory hooks and a security scan. Useful when every Claude session starts from a blank slate.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add reason-machines/trending-skills --skill everything-claude-code-harness -a claude-code
Open on GitHub

What everything-claude-code-harness does

Inside the skill you get a set of specialised subagents, skill modules, custom slash commands, lifecycle hooks and language rules. Commands run with the plugin prefix, so a planning call looks like /everything-claude-code:plan and a scan like /everything-claude-code:security-scan.

Hooks listen on SessionStart, Stop, PostEdit, PreBash and PostBash. Strictness comes from ECC_HOOK_PROFILE — minimal, standard or strict — and individual hooks are switched off by listing them in ECC_DISABLED_HOOKS. Package manager detection walks a chain that starts with CLAUDE_PACKAGE_MANAGER, then .claude/package-manager.json, then lock files.

The rules/ folder is not shipped into your project by the plugin. You copy the stack you need into .claude/rules/ or call ./install.sh with a stack name such as ./install.sh typescript, adding --target cursor when the rules should land in Cursor. Skip that step and the agent picks up commands and hooks while the rules never arrive.

What it helps with

  • put the right rules for a TypeScript, Python, Go or Swift repo in place
  • run a security scan before pushing a branch
  • turn a pattern from a past session into a reusable instinct
  • switch hook strictness to match the task at hand
  • plan multi-agent work that spans backend and frontend

Example prompts for the agent

  • Run /everything-claude-code:plan "Add an OAuth2 login flow" and lay out the steps
  • Scan the current branch with /everything-claude-code:security-scan
  • Look into caching options first: /everything-claude-code:research "content hashing for API responses"

How to install everything-claude-code-harness

1Skills CLI (Vercel)

npx skills add reason-machines/trending-skills --skill everything-claude-code-harness -a claude-code

2Manually: put the files in place

~/.claude/skills/everything-claude-code-harness/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/everything-claude-code-harness/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about everything-claude-code-harness

How do I install everything-claude-code-harness in Claude Code?

Run npx skills add reason-machines/trending-skills --skill everything-claude-code-harness -a claude-code. The skill lands at ~/.claude/skills/everything-claude-code-harness/SKILL.md.

What does everything-claude-code-harness do?

It gives the agent a working harness: subagents, skills, slash commands, hooks that persist memory across sessions, and rules for the project's language stack.

Why are no rules active after install?

Claude plugins can't push rules into a project by themselves. Copy the folders you need from rules/ into .claude/rules/, or run ./install.sh with a stack name.

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