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ros2-mcp-server

ros2-mcp-server

by EngineerAbdullahBinZafar
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

swarm_fleet_status

Scan multi-namespace ROS2 graphs to aggregate multi-robot fleet health in a single call.

Instructions

[WORLD-FIRST] Scans multi-namespace ROS2 graph (/drone_1, /rover_2, /arm_3) and aggregates multi-robot fleet health in one call.

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": "swarm_fleet_status"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.1.0

TDQS

A3.5/5.0
Behavior2/5

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

With no annotations, the description must disclose safety and behavioral traits. It indicates a read-style scanning operation, but does not mention return format, potential side effects (though likely none), cost/performance, or failure modes. The 'WORLD-FIRST' hype and vague 'health' terminology add little. This is insufficient for a tool with no annotation support.

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 sentence that front-loads the action. It is concise, but the leading '[WORLD-FIRST]' is unnecessary hype that wastes space. Otherwise well-structured.

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

Completeness2/5

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

Without annotations or an output schema, the description needs to explain what 'fleet health' means and what the aggregate result looks like. It does not. The tool seems simple in parameters, but the output semantics are undefined, making the description incomplete for an agent to fully predict the tool's behavior.

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?

The tool has zero parameters, so the schema (empty) already fully covers parameter semantics. The description adds no parameter info, but none is needed. Baseline 4 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?

The description clearly states the tool's action: 'Scans multi-namespace ROS2 graph' and aggregates 'multi-robot fleet health in one call.' This distinguishes it from sibling tools that operate on individual nodes, topics, or parameters.

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 phrase 'in one call' implies convenience over calling per-robot tools, and the multi-namespace scope suggests when to use it. However, there is no explicit guidance on when not to use it or how it compares to calling get_robot_snapshot individually. Usage context is implied but not fully articulated.

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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