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mcp-security-scanner

mcp-security-scanner

by badchars
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

cfg_auto_discover

Automatically locates MCP configuration files in Claude Desktop, Claude Code, Cursor, VS Code, and Windsurf. Returns discovered configs and server counts.

Instructions

Auto-discover all MCP configuration files on the system. Checks Claude Desktop, Claude Code, Cursor, VS Code, Windsurf locations. Returns found config files with server counts.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "cfg_auto_discover"
  }
}

Input Schema

NameRequiredDescriptionDefault
scan_homeNoScan home directory for configs (default: true)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.8/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It specifies return format but does not disclose whether the tool is read-only, modifies anything, or requires specific permissions. Lacks explicit safety or side-effect information.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, no wasted words. First sentence states action, second adds details on scope and return value. Highly concise and front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 1 optional parameter and no output schema, the description covers purpose, scope, and return value. Could be improved by stating it is read-only, but otherwise adequate.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% (one boolean parameter fully described). Tool description adds no additional meaning beyond the schema, so baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description uses specific verb 'auto-discover' and resource 'MCP configuration files'. Lists exact locations (Claude Desktop, Claude Code, etc.) and return value (found config files with server counts). Clearly distinguishes from sibling tools that audit/check specific aspects.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool vs alternatives like cfg_audit_mcp_config. Usage is implied (for initial discovery) but no when-to-use or when-not-to-use information.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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