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llm-toolkit

llm-toolkit

by 0x1Jar
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

List Mcp Tools

list-mcp-tools

List all tools available on a connected MCP server using its server ID, enabling quick discovery of security testing capabilities.

Instructions

List tools available on a connected MCP server

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "serverId": "<serverId>"
    },
    "name": "list-mcp-tools"
  }
}

Input Schema

NameRequiredDescriptionDefault
serverIdYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.4/5.0
Behavior2/5

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

With no annotations provided, the description carries full burden but only states the basic function. It does not disclose whether the tool is read-only, requires prior connection, or any other behavioral traits such as error handling or permissions.

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?

The description is a single, concise sentence with no redundancy. It could be slightly improved by front-loading the purpose, but overall it is efficient.

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

Completeness3/5

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

For a simple list tool with one parameter and no output schema, the description covers the core function. However, it omits preconditions like the server must be connected, and does not clarify what 'available' means or what the output format is.

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?

The description adds context that the 'serverId' parameter identifies a connected server, which is not explained in the schema (0% coverage). However, it does not elaborate on valid values, format, or any constraints beyond the schema's 'string' type.

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 uses the specific verb 'list' and clearly identifies the resource as 'tools available on a connected MCP server'. This distinguishes it from sibling tools like 'call-mcp-tool' (which calls a tool) and 'list-connected-servers' (which lists servers).

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?

The description implies usage after connecting to an MCP server but provides no explicit guidance on when to use this tool versus alternatives, nor any exclusions or prerequisites.

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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