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list_tools

Read-onlyIdempotent

Browse and filter 670+ cybersecurity tools by module, install method, or installed status to find available options before installing or checking.

Instructions

List and filter the 670+ cybersecurity tools in the registry.

Returns the tools drawn from tools_config.json — the same registry the installer and the advisors share — with the total count, the filters still available to narrow the results, and one entry per tool. Combine the filters to scope the list: module="web" for web tools, method="pipx" for Python-packaged tools, installed_only=True for only what is on this host. Start here to discover what exists before check_installed or get_tool_info.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
methodNoFilter by install method. One of apt, pipx, go, cargo, gem, git, binary, docker, snap, special, source, npm.
moduleNoFilter by module (e.g. "web", "pwn", "forensics"). 18 modules available.
installed_onlyNoIf true, only return tools that are currently installed.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.2.1
    • changedInput schema / properties / method / anyOf
      Previous value: -[
      -  {
      -    "type": "string"
      -  },
      -  {
      -    "type": "null"
      -  }
      -]New value: +[
      +  {
      +    "enum": [
      +      "apt",
      +      "pipx",
      +      "go",
      +      "cargo",
      +      "gem",
      +      "git",
      +      "binary",
      +      "docker",
      +      "snap",
      +      "special",
      +      "source",
      +      "npm"
      +    ],
      +    "type": "string"
      +  },
      +  {
      +    "type": "null"
      +  }
      +]
    • changedInput schema / properties / method / description
      Previous value: -"Filter by install method (apt, pipx, go, cargo, gem, git, binary, docker, snap, special, source, npm)."New value: +"Filter by install method. One of apt, pipx, go, cargo, gem, git,\nbinary, docker, snap, special, source, npm."
  2. First observedv1.2.0

TDQS

A4.6/5.0
Behavior4/5

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

Annotations already declare readOnly, idempotent, closed-world behavior, so the safety profile is covered. The description adds valuable context about data provenance (drawn from tools_config.json, shared with installer/advisors) and return shape (total count, available filters, one entry per tool), which goes beyond the annotations.

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

Conciseness4/5

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

Front-loads the core action, then provides provenance, filter examples, and entry-point guidance. Efficient and well-ordered, though the provenance sentence is slightly verbose for a list tool.

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

Completeness5/5

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

With an output schema present and annotations covering safety, the description fills remaining gaps: data source, filter combinations, and the tool's role in the workflow relative to siblings. Nothing essential is missing for correct invocation.

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

Parameters4/5

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

Schema coverage is 100% so baseline is 3, but the description adds semantic value by giving concrete examples of the three filters and showing combinations, which helps an agent reason about filter interaction beyond the schema's individual parameter docs.

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?

States a specific verb (list/filter) and resource (670+ cybersecurity tools in the registry), and grounds it in the shared tools_config.json registry. Distinguishes from siblings by naming check_installed and get_tool_info as downstream steps.

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

Usage Guidelines5/5

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

Explicitly says 'Start here to discover what exists before check_installed or get_tool_info,' giving a clear entry-point role, and offers concrete filter combinations (module="web", method="pipx", installed_only=True) to guide use.

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