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send-chat

Send a chat message in Minecraft to communicate with players or execute commands. Provide the message text for delivery in the game via the MCP server.

Instructions

Send a chat message in-game

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
messageYesMessage to send in chat
Behavior2/5

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

No annotations are present, so the description carries full burden. It only states the action without disclosing behavioral traits such as rate limits, permissions, side effects, or what happens on success/failure. The agent has no context beyond the basic operation.

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?

Description is a single, front-loaded sentence with no unnecessary text. It efficiently conveys the tool's purpose without redundancy.

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?

Given the tool's simplicity (one parameter, no output schema), the description is adequate but minimal. It does not explain return behavior or error conditions, but for a straightforward chat send action, it may be sufficient. However, adding context about message length limits or confirmation behavior would improve completeness.

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% and the only parameter 'message' is described in the schema. The description does not add any additional meaning beyond the schema, so baseline score of 3 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?

Description clearly states the tool sends a chat message in-game, using a specific verb and resource. It is unambiguous and distinguishes from the sibling 'read-chat' which likely reads messages.

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 versus alternatives like 'read-chat'. The description does not mention any prerequisites, limitations, or best practices for sending a chat message.

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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