Claude Code, Skill
Harness Engineering Skills
Agent skills for Cursor, Claude Code, and Codex — help coding agents finish work reliably, not just write code faster.
Compatibility: Not stated.
Grade B
Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.
Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.
NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV
Why this grade
- NETWORK_NO_FIXED_HOST Low
Makes a network call whose host is not written as a fixed address.
skills/harness-e2e/SKILL.md, line 112
"curl -f http://localhost:3000/health" - SECRETS_PATH_DOTENV Low
Mentions a .env file.
skills/harness-environment/SKILL.md, line 50
3. Env files - copy .env.example → .env if missing; never commit secrets
Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.
Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.
What was checked
Plain notes from the hygiene checks.
Permissions
Pass
No shell or command execution found, and no extra permission was declared.
Install and update
Pass
No install-time script found, and dependencies are pinned or absent.
Network
Concern
can reach a host that is not written as a fixed address.
NETWORK_NO_FIXED_HOST
skills/harness-e2e/SKILL.md, line 112
"curl -f http://localhost:3000/health"
skills/harness-environment/SKILL.md, line 84
# curl -sf http://localhost:3000/api/health or npm test -- --runInBand
skills/harness-environment/SKILL.md, line 136
curl -sf http://localhost:3000/api/health || echo "start app, then re-check"
Show more
skills/harness-observability/SKILL.md, line 67
- Health check: `curl localhost:3000/health`
Secrets
Concern
reads a credential or environment file.
SECRETS_PATH_DOTENV
skills/harness-environment/SKILL.md, line 50
3. Env files - copy .env.example → .env if missing; never commit secrets
skills/harness-environment/SKILL.md, line 75
if [ ! -f .env ] && [ -f .env.example ]; then
skills/harness-environment/SKILL.md, line 76
echo "Missing .env - copy .env.example and fill required values"
Show more
skills/harness-environment/SKILL.md, line 100
| Env file | Copy `.env.example` → `.env` |
skills/harness-environment/SKILL.md, line 105
Required env vars are listed in `.env.example`. Do not invent values for secrets.
skills/harness-environment/SKILL.md, line 132
test -f .env || { echo "copy .env.example → .env"; exit 1; }
skills/harness-environment/SKILL.md, line 143
test -f .env || { echo "copy .env.example → .env"; exit 1; }
AGENTS.md, line 19
This repo is a zero-dependency Node CLI. No `.env`, Docker, or database.
Agent instructions
Pass
No instruction to ignore earlier instructions or to hide a step.
Obfuscation
Pass
No encoded or minified payload found.
Licence
Pass
A licence file is present (LICENSE).
Maintainer activity
Pass
The latest commit is within the last 365 days.
Note
Hygiene check of commit 7e8ef2d52ba1. can reach a host that is not written as a fixed address. reads a credential or environment file.
Date and source
Date checked:
github.com
Commit graded: 7e8ef2d52ba1a2e590735bd3f44c605b781d3ab8
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