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CC safe-encryption

Encrypt, decrypt, and manage keys with the SAFE CLI — a modern GPG alternative with post-quantum support.

modbender/skill-library-mcp Agent Skills author: modbender MIT 1 file body ≈ 14 652 tokens Open the sourcegithub.com↗ analyzed 2 d ago

Encrypt, decrypt, and manage keys with the SAFE CLI — a modern GPG alternative with post-quantum support.

As a process C 50/100 · Has gaps — weak spots: result and completion, inputs and preconditions, consistency

IntegrationGitHubPlaywrightAI and agentstype and topics are labelled automatically from the skill text
Runs in: OpenClaw Claude / Claude Code ChatGPT / Codex Gemini CLI Cursor GitHub Copilot / VS Code Qwen Code Kimi Code CLI Z.ai (GLM) DeepSeek (Deep Code) Mistral Vibe LangChain (deepagents) Goose OpenCode
JSON
Technical rating
C
66/100
safety, quality, tests
Safety 60%
75
Quality 40%
53
Run on models
none yet
Process rating
C
50/100
Has gaps
Result and completion w 14
0
Inputs and preconditions w 11
0
Consistency w 8
40
the three weakest of ten parameters · all ten

What is at stake

Medium-severity findings: the skill is probably honest, but read what alarmed the scanner.

Dangerous commands medium severity

Below is the worst case for this category. The finding here is medium: the guard saw a sign, not a proof.

If you install

The skill contains commands that delete files, rewrite disks or execute code fetched from the network. The agent may run them without asking if it believes the instructions require it.

For the author

Replace destructive commands with safe equivalents that ask for confirmation, scope them to one folder, and stop piping curl into a shell: pin a version and a checksum.

How to improve

  1. Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
  2. The SKILL.md body is over 5,000 tokens: move reference detail into references/ and load it when needed.
For the model run — optional
  • Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
  • A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.

Guard findings · 5

✓ No critical or high findings

Medium and low: 5
  • medium Dangerous commands cmd-privilege SKILL.md:28
    Privilege escalation / world-writable permissions
    curl -sL https://thesafe.dev/downloads/safe…m64 -o safe && chmod +x safe && sudo mv safe /usr/local/bin/
  • medium Dangerous commands cmd-privilege SKILL.md:33
    Privilege escalation / world-writable permissions
    curl -sL https://thesafe.dev/downloads/safe…d64 -o safe && chmod +x safe && sudo mv safe /usr/local/bin/
  • medium Dangerous commands cmd-privilege SKILL.md:38
    Privilege escalation / world-writable permissions
    curl -sL https://thesafe.dev/downloads/safe…d64 -o safe && chmod +x safe && sudo mv safe /usr/local/bin/
  • medium Dangerous commands cmd-privilege SKILL.md:43
    Privilege escalation / world-writable permissions
    curl -sL https://thesafe.dev/downloads/safe…m64 -o safe && chmod +x safe && sudo mv safe /usr/local/bin/
  • medium Dangerous commands cmd-privilege SKILL.md:50
    Privilege escalation / world-writable permissions
    curl -sL "https://thesafe.dev/downloads/safe-${OS}-${ARCH}" -o safe && chmod +x safe && sudo mv safe /usr/local/bin/; }

Files scanned: 1. Evidence is masked. Grey chips explain why severity was lowered.

Against the Agent Skills spec

  • warning description-no-when description does not say WHEN to use the skill (no "use when")
  • warning body-long SKILL.md body ≈ 14652 tokens (recommended < 5000); move details to references/

Process rating: all ten parameters 50/100

  • 0Result and completion. Does not say what the result is
  • 0Inputs and preconditions. Does not say what the process needs to start
  • 40Consistency. Frontmatter name (safe-encryption) differs from the folder (safe-encryption-skill)
  • 40Execution cost. Instruction body is 14652 tokens: crowds the task out of the window
  • 60Tools and files. Uses tools (bash, web, git) that frontmatter does not declare
  • 60Steps. 185 steps, 8 vague phrases
  • 70When it triggers. States when to use, but not when not to
  • 100Failures and branches. 3 branches, has a failure section
  • 100Running it twice. Mutating operations check current state
  • 100Progress reporting. Reports progress
  • medium Safety rules and hard prohibitions inside a skill: they belong in the system prompt, here they protect nothing
  • low 13 top-level sections: this looks like several domains in one skill
  • low The response is described with custom markup (6 tags): a typed call is more reliable

Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.

Quality signals

  • +5Description has no quoted example phrases that should trigger the skill
  • +4Description does not say when NOT to use the skill (false activations)
  • +3Description length 105: 120–800 characters recommended
  • +3Output format is not stated: the model decides each time
  • -4Absolute local paths (C:\Users, /home/…): not portable
  • -229 emoji in the instructions: noise for the model
  • +1No license
  • +2Single-language instructions
  • +4Structure: 63 headings
  • +3Step-by-step instructions: 185 items
  • +4Has examples (68 code blocks)

Quality base 70; lint remarks subtract, signals add up to 100. Result: 53.