Skip to main content
Glama
badchars

mcp-security-scanner

by badchars

rt_pin_tools

Connect to an MCP server and create a cryptographic pin of its tool definitions. Use later to detect unauthorized changes, preventing rug pulls.

Instructions

Connect to server, SHA-256 hash every tool definition (name + description + schema), store as a pin file. Use rt_verify_pins later to detect tool definition changes (rug pull detection).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
commandYesServer command to execute (e.g. 'node', 'bun', 'npx')
argsNoCommand arguments (e.g. ['run', 'server.js'])
envNoAdditional environment variables
timeout_msNoConnection timeout in milliseconds (default: 30000)
pin_nameYesName for this pin (used as filename, e.g. 'my-mcp-server')
Behavior3/5

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

No annotations are provided, so the description must fully disclose behavior. It mentions connecting, hashing, and storing, but does not specify potential side effects like overwriting existing pin files or required permissions.

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 concise sentences. The first explains the action, the second explains the follow-up use. No unnecessary information.

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?

Given the tool's complexity (5 params, no output schema), the description covers the essential purpose and workflow. Missing details like error handling or file location, but sufficient for an AI agent to understand when to invoke.

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?

All parameters are described in the schema (100% coverage). The description adds overall purpose but does not enhance individual parameter meanings beyond what the schema provides.

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?

The description clearly states the tool connects to a server, hashes tool definitions, and stores a pin file, with a specific purpose (rug pull detection). It distinguishes itself from sibling rt_verify_pins.

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

Usage Guidelines4/5

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

The description explicitly mentions using rt_verify_pins later, providing context on when to use this tool. However, it does not mention when not to use it or provide alternatives beyond the mentioned sibling.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/badchars/mcp-security-scanner'

If you have feedback or need assistance with the MCP directory API, please join our Discord server