MCP Minecraft Remote

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connectToServer

Connect to a remote Minecraft server by providing host and username. Optionally include port, password, and version for authentication.

Instructions

Connect to a Minecraft server with the specified credentials

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": {
      "host": "<host>",
      "username": "<username>"
    },
    "name": "connectToServer"
  }
}

Input Schema

Name	Required	Description
`host`	Yes	Minecraft server host address
`port`	No	Minecraft server port
`username`	Yes	Minecraft username
`password`	No	Minecraft password (if using premium account)
`version`	No	Minecraft version

Schema Changelog

Changes observed during successful MCP inspections.

First observedAug 18, 2025

TDQS

C2.9/5.0

Behavior2/5

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

With no annotations, the description carries full burden but fails to disclose important behaviors such as whether the tool blocks, establishes a persistent session, or how errors are communicated. The simple statement lacks depth for a connection tool.

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?

The description is a single concise sentence (9 words) that front-loads the action and resource. Every word is necessary; no wasted content.

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?

Given the complexity of a connection tool with 5 parameters and no output schema or annotations, the description is insufficient. It omits return behavior, error handling, and prerequisites, making it incomplete for reliable use.

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 coverage is 100%, so each parameter has a description. The tool description adds minimal value ('with the specified credentials') beyond the schema. Baseline 3 is appropriate as the schema already documents parameters well.

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

Purpose4/5

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

The description clearly states the action 'Connect to a Minecraft server' and specifies 'with the specified credentials', making the purpose unambiguous. It distinguishes well from sibling tools like disconnectFromServer or getServerInfo.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool (e.g., before other server interactions) versus alternatives like getServerInfo. It lacks any when/not-to-use context, leaving the agent to infer usage.

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