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Security audit

Agent-Readiness Audit: AI Agent Website Checker (llms.txt, MCP, AI crawlers)

Security checks for vulnerabilities and agentic risk

Overview

The skill performs a clearly disclosed website audit by sending the public URL you choose to an external service.

Submit only public URLs you are comfortable sharing with Gain Solutions and having included in stored, publicly viewable reports. Exclude private links and URLs containing secrets. The remote service's behavior was not independently verified.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: shell.

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 60)May include surrounding context.

Request (or sh {baseDir}/scripts/audit.sh scan gainsolutions.io):

bash
curl -sS -m 90 -X POST https://audit.gainsolutions.io/api/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"scan_site","arguments":{"url":"https://gainsolutions.io"}}}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · scripts/audit.sh (reported line 16)May include surrounding context.

sh
}

call() {
  curl -sS -m "$1" -X POST "$ENDPOINT" \
    -H 'Content-Type: application/json' \
    -H 'Accept: application/json, text/event-stream' \
    -d "$2"

Static analysis

No suspicious patterns detected.