Skill Creator 0.1.0

• Outcome: Pass
• Latest audit: Sep 15, 2026 · 1:19 AM UTC
• Version: 1.0.1

Overview

This is a plain Markdown guide for creating skills; its file editing and packaging instructions are expected for that purpose and no hidden execution or persistence was found.

Install only if you want the agent to help create or update skill packages. Expect it to guide file creation, deletion of generated examples, and packaging commands in a user-selected skill directory; review generated skill contents before sharing or installing them.

A.I.G

Vulnerability Patterns

• Skill Instruction Hijacking: Alters the agent's session goals or safety constraints when the skill loads
• Agent Memory Poisoning: Writes attacker-controlled rules into memory that affect later sessions
• Remote Payload Retrieval and Execution: Fetches external code whose behavior can change after review
• Embedded Malicious Code: Ships malicious scripts inside the skill and executes them locally
• Unauthorized Access and Privilege Escalation: Obtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns

• Rogue Agent: Self-Modification, Session Persistence
• Trigger Abuse: Overly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access

Findings (3)

Self-Modification

High

• Category: Rogue Agent
• Confidence: 85% confidence

Finding

Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.

Content

Scanner excerpt · SKILL.md (reported line 209)May include surrounding context.

md

1. Understand the skill with concrete examples
2. Plan reusable skill contents (scripts, references, assets)
3. Initialize the skill (run init_skill.py)
4. Edit the skill (implement resources and write SKILL.md)
5. Package the skill (run package_skill.py)
6. Iterate based on real usage

Self-Modification

High

• Category: Rogue Agent
• Confidence: 85% confidence

Finding

Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.

Content

Scanner excerpt · SKILL.md (reported line 300)May include surrounding context.

md

Any example files and directories not needed for the skill should be deleted. The initialization script creates example files in `scripts/`, `references/`, and `assets/` to demonstrate structure, but most skills won't need all of them.

#### Update SKILL.md

**Writing Guidelines:** Always use imperative/infinitive form.

Vague Triggers

Medium

• Category: Not specified by scanner
• Confidence: 87% confidence

Finding

The manifest-style description says the skill should be used when users want to create a new skill or update an existing skill that extends Claude's capabilities. This is a wide trigger scope without concrete boundaries, exclusions, or negative examples, increasing the chance of unintended invocation for many generic skill-editing requests.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.