Agentsid Scanner
Description
Security scanner for MCP servers. Grades auth, permissions, injection risks, and tool safety. The Lighthouse of agent security.
Installation
This entry records only its repository, not the path inside it, so there is no
exact command to give. Open the source below and copy the folder into
~/.claude/skills/, or the file into ~/.claude/agents/.
README
AgentsID Scanner
The Lighthouse of agent security.
Scan any MCP server. Get a security report card.
Your MCP server exposes tools to AI agents. How secure is it?
Most MCP servers ship with no authentication, no per-tool permissions, no input validation, and tool descriptions vulnerable to prompt injection. **You just don't know it yet.**
AgentsID Scanner tells you.
Quick Start
npx @agentsid/scanner -- npx @some/mcp-server
That's it. You get a letter grade and detailed findings.
What It Scans
| Category | What It Checks | Why It Matters |
|---|---|---|
| Injection | Tool descriptions for 11 prompt injection patterns | Malicious tool descriptions can hijack agent behavior |
| Permissions | Tool names classified by risk (destructive, execution, financial, credential) | 50 tools with no access control is a 50-surface attack |
| Validation | Input schemas for missing constraints, unbounded strings, optional-only params | No validation = arbitrary input to your tool handlers |
| Auth | Authentication indicators in tool surface | No auth tools = unauthenticated agents calling your tools |
| Secrets | Tools that may expose credentials in output | API keys, tokens, passwords leaked in responses |
| Output | Unfiltered file/data output | Sensitive file contents returned without redaction |
The Report
╔══════════════════════════════════════════════════════════════╗
║ AgentsID Security Scanner — Report ║
╚═════════════════
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