Dangerous: exceptd-skills - mcp.json | Skillgate

Skillgate scanned data/playbooks/mcp.json in exceptd-skills and rated it Dangerous with a risk score of 94/100 (5 detections).

Skillgate found one or more attack-shaped patterns - the kind used for credential exfiltration, remote code execution, or instruction hijack. Do not load this file into an agent without reading it end to end.

What was found

• SG-018 Memory Poisoning - CRITICAL: Writes to CLAUDE.md or ~/.claude/memory to persist malicious instructions across sessions
• SG-024 MCP Tool Poisoning - CRITICAL (2x): Malicious instructions in MCP tool descriptions, credential-capturing schemas, built-in tool shadowing
• SG-097 Fetch-and-Execute - MEDIUM: Network-fetched content executed as code (pipe-to-shell, process substitution, eval, render-then-run, download-then-run)
• SG-098 Agent Safety-Control Suppression - MEDIUM: Instruction to suppress safety warnings, skip confirmation, or hide actions from the user

What to do

Read the flagged lines in the source file yourself before installing it or letting an agent load it. Every detection above links to the rule that fired, with the conditions that trigger it and remediation where one exists. Open the interactive report for evidence lines and context.

About Skillgate

Skillgate is a free scanner from Mitiga Labs for AI agent skills, hooks, MCP configs, and instruction files (SKILL.md, CLAUDE.md, AGENTS.md, .cursorrules, .claude/settings.json). It runs static rules plus an LLM judge and maps each finding to a known attack technique. Static analysis only: it never executes the file it scans. No scanner is 100% accurate - a verdict is a signal, not a guarantee. Browse all detection rules.