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prerequisites
65 / 100 · Review before installing
Check before installing. Some of what it can do is expected: a coding skill usually runs build and test commands.
By melodic-software/claude-code-plugins (GitHub) · coding · 30 stars · scanned at commit 677e798
Read-only report of external tools the enabled plugin fleet declares, and which of them are missing. Use when a hook says a formatter or CLI is missing, or when asking whether this machine has what the enabled plugins need. Never installs.
Works with any agent that supports SKILL.md skills.
What this skill can do
Runs commands on your computer
The author does not mention this. It runs automatically when the plugin is installed. Expected for a coding skill.
Found in 30 places.
Show 17 more
- plugins/harness-ops/skills/prerequisites/scripts/check-prerequisites.mjs, line 71
const r = spawnSync(claude, ["plugin", "list", "--json"], { - plugins/harness-ops/lib/prerequisites.mjs, line 30
import { spawnSync } from "node:child_process"; - plugins/harness-ops/lib/prerequisites.mjs, line 353
const r = spawnSync(path.resolve(file), args, { - plugins/harness-ops/lib/prerequisites.mjs, line 703
const r = spawnSync(process.execPath, [installer, "verify", "--quiet", "--repo", repo, "--plugin-root", root], { - plugins/harness-ops/.claude-plugin/plugin.json, line 187
"description": "Command run detached at SessionEnd with one argument: a directory holding the session files about to be pruned, deleted on the next retention ru - plugins/harness-ops/hooks/exec-bash.mjs, line 111
import { spawn, spawnSync } from "node:child_process"; - plugins/harness-ops/hooks/hook-failure-audit.test.sh, line 280
assert_absent "bash -c line-numbered error is not stale config" "$OUT_S" "$STALE_LABEL" - plugins/harness-ops/hooks/hook-failure-audit.test.sh, line 807
bash -c "$row_cmd" >/dev/null 2>&1 || row_rc=$? - plugins/harness-ops/hooks/hooks.json, line 12
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 29
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 45
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 61
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 77
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 94
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 110
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 127
"command": "node", - plugins/harness-ops/hooks/hooks.json, line 144
"command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/hook-failure-audit.sh\"",
and 10 more places
Downloads and installs other software
The author does not mention this.
Found in 5 places.
Show 2 more
Sends data to these websites: x, code.claude.com
The author does not mention this. It runs automatically when the plugin is installed.
Found in 34 places.
Show 17 more
- plugins/harness-ops/hooks/hook-events.registry.json, line 28
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 38
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 48
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 58
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 68
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 78
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 88
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 98
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 108
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 118
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 128
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 138
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 148
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 158
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 168
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 178
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)", - plugins/harness-ops/hooks/hook-events.registry.json, line 188
"basis": "https://code.claude.com/docs/en/hooks#hook-lifecycle (raw markdown of hooks.md, fetched with curl -sS -L)",
and 14 more places
Changes files outside its own folder
The author does not mention this. It runs automatically when the plugin is installed.
Found in 2 places.
Install
Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.
if [ -e ~/.agents/skills/'prerequisites' ] || [ -L ~/.agents/skills/'prerequisites' ]; then echo 'A skill folder named prerequisites already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/melodic-software/claude-code-plugins' "$d" && git -C "$d" checkout --quiet '677e7988f432dacb5e2d4df2b124f96da8e8f9f3' -- 'plugins/harness-ops/skills/prerequisites' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/harness-ops/skills/prerequisites' ~/.agents/skills/'prerequisites' && rm -rf "$d"; fi
Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'prerequisites' ~/.claude/skills/'prerequisites' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.
Badge for your README
The badge for melodic-software/claude-code-plugins shows the score of its lowest-scoring skill.
[](https://zalavijaysinh.github.io/skilltrust/repos/melodic-software/claude-code-plugins/)
Score history
| Date | Version | Score |
|---|
| 2026-11-09 | 677e798 | 65 |
| 2026-11-07 | 81c7244 | 65 |