harness-health SKILL.md skillA
harness-health from ucsandman/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ucsandman/claude-skills/harness-health@git:20260904.14d2e37Pins git:20260904.14d2e37 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ucsandman/claude-skills
- Path
harness-health/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260904.14d2e37, committed Sep 4, 2026
- First version recorded
- Aug 12, 2026
- Size
- 5,515 bytes
- Repository stars
- 5
- License
- MIT
Read-only health check of the Claude Code harness - hooks, MCP servers, plugins. Use after editing settings.json/.mcp.json or hooks misbehave.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Harness Health
Run: `pwsh -NoProfile -File "$env:USERPROFILE\.claude\scripts\harness-health.ps1"`
Read-only — the only file it ever writes is its own `harness-health.state.json` (next to the script). It scans every settings layer Claude Code merges — `~/.claude/settings.json`, `~/.claude/settings.local.json`, and each known project's `.claude/settings.json` / `.claude/settings.local.json` (projects come from `~/.claude.json`) — so a `/config` write in one repo is caught globally. It also reads the MCP config: the per-project entries in `~/.claude.json` plus every `.mcp.json` at a known project root and `~/.claude/.mcp.json`.
Switches:
- `-Probe` — additionally executes every distinct hook command once with `{}` on stdin, a 10s cap, and `CLAUDE_PROJECT_DIR` set to that layer's project (`$CLAUDE_PROJECT_DIR`/`$HOME` in the command are expanded first, since the probe runs through `cmd.exe`). Default runs execute nothing.
- `-IfChanged` — exits silently unless some `settings*.json` layer is newer than the state file. For hook wiring.
Interpret the output:
…Read the whole file at its exact version.
How to install
mdr add ucsandman/claude-skills/harness-health@sha256:f0b2e205233bf6ceThe line at the top of this page pins the label git:20260904.14d2e37, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_mmme6vd44ocqekub)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 12, 2026 and Sep 4, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260904.14d2e37 latest | 2026-09-04 | 14d2e37 | 5,515 B | A | view · diff |
| git:20260812.9665e9c | 2026-08-12 | 9665e9c | 1,548 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5515 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
ucsandman/claude-skills · 5 stars · license MIT · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mmme6vd44ocqekub GET https://markdownregistry.com/api/v1/resolve?ref=ucsandman/claude-skills/harness-health GET https://markdownregistry.com/api/v1/blob/f0b2e205233bf6ce9250d7eb3717fadb149c18c271cd52f94924bb3f0b5f7226
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.