Skill Vetter

Security-first vetting protocol for AI agent skills. Never install a skill without vetting it first.

When to Use

• Before installing any skill from the platform skill market
• Before installing external skills from skillhub
• Before running skills from GitHub repositories
• When evaluating skills shared by other agents
• Anytime you are asked to install unknown code

Vetting Protocol

Step 1: Source Check

Questions to answer:

• Where did this skill come from? (platform market / skillhub / GitHub / other)
• Is the author known or reputable?
• How many downloads or stars does it have?
• When was it last updated?
• Are there reviews from other agents?

Step 2: Preview Install to Temp Dir, Then Read All Files

Do not install to the real skills directory yet. Install to a temp directory first for inspection.

Choose the preview method based on the source:

skillhub source (supports --dir for temp directory):

skillhub --dir /tmp/skillhub-preview/ install <slug>

After install, use shell_exec to list and read all files:

# List all files
shell_exec(command="find /tmp/skillhub-preview/<skill-name> -type f | sort")

# Read each file
shell_exec(command="cat /tmp/skillhub-preview/<skill-name>/SKILL.md")
shell_exec(command="cat /tmp/skillhub-preview/<skill-name>/scripts/<file>.py")
# ... read all scripts, configs, and reference files

If approved, run the normal install without --dir. Either way, clean up the temp dir:

shell_exec(command="rm -rf /tmp/skillhub-preview/")

Platform market / my skill library source (also supports --dir for temp directory):

shell_exec(command="skillhub install-platform-me <code> --dir /tmp/skillhub-preview/")
# or
shell_exec(command="skillhub install-platform-market <code> --dir /tmp/skillhub-preview/")

After install, use shell_exec to list and read all files:

# List all files
shell_exec(command="find /tmp/skillhub-preview/<skill-name> -type f | sort")

# Read each file
shell_exec(command="cat /tmp/skillhub-preview/<skill-name>/SKILL.md")
shell_exec(command="cat /tmp/skillhub-preview/<skill-name>/scripts/<file>.py")
# ... read all files

If approved, run the normal install without --dir. Either way, clean up the temp dir:

shell_exec(command="rm -rf /tmp/skillhub-preview/")

Step 3: Code Review (MANDATORY)

Read ALL files in the skill. Reject immediately if any of the following are present:

REJECT IMMEDIATELY IF YOU SEE:
─────────────────────────────────────────
- curl/wget to unknown URLs
- Sends data to external servers
- Requests credentials, tokens, or API keys
- Reads ~/.ssh, ~/.aws, ~/.config without clear reason
- Accesses MEMORY.md, USER.md, SOUL.md, IDENTITY.md
- Uses base64 decode on anything
- Uses eval() or exec() with external input
- Modifies system files outside the workspace
- Installs packages without listing them explicitly
- Network calls to raw IP addresses instead of domains
- Obfuscated code (compressed, encoded, or minified)
- Requests elevated or sudo permissions
- Accesses browser cookies or sessions
- Touches credential files
─────────────────────────────────────────

Step 4: Permission Scope

Evaluate:

• What files does it need to read?
• What files does it need to write?
• What commands does it run?
• Does it need network access? To where?
• Is the scope minimal for its stated purpose?

Step 5: Risk Classification

Output Format

After vetting, produce this report:

SKILL VETTING REPORT
=======================================
Skill: [name]
Source: [platform market / skillhub / GitHub / other]
Author: [username]
Version: [version]
---------------------------------------
METRICS:
- Downloads/Stars: [count]
- Last Updated: [date]
- Files Reviewed: [count]
---------------------------------------
RED FLAGS: [None / list them]

PERMISSIONS NEEDED:
- Files: [list or "None"]
- Network: [list or "None"]
- Commands: [list or "None"]
---------------------------------------
RISK LEVEL: [LOW / MEDIUM / HIGH / EXTREME]

VERDICT: [SAFE TO INSTALL / INSTALL WITH CAUTION / DO NOT INSTALL]

NOTES: [Any observations]
=======================================

Trust Hierarchy

1. Official platform skills (published via platform market) — lower scrutiny (still review)
2. High-star repos (1000+) — moderate scrutiny
3. Known authors — moderate scrutiny
4. New or unknown sources — maximum scrutiny
5. Skills requesting credentials — human approval always required

Principles

• No skill is worth compromising security
• When in doubt, do not install
• Escalate high-risk decisions to the user
• Document what you vet for future reference