Security audit

Dev Toolkit

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed developer utility wrapper that sends user-requested inputs to named external API services, with no local code execution or persistence found.

Install only if you are comfortable sending requested utility inputs to agentutil.net services. Avoid submitting secrets, private keys, passwords, confidential documents, or private addresses unless you explicitly choose to share them; also note the free daily limit and possible USDC x402 charges after it.

A.I.G

Vulnerability Patterns

Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

External Transmission

Medium

Category: Data Exfiltration
Content: **Hash a string:** ```bash curl -X POST https://hash.agentutil.net/v1/hash \ -H "Content-Type: application/json" \ -d '{"input": "hello world", "algorithm": "sha256"}' ```
Confidence: 60% confidence
Finding: Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.