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

The annotations already indicate readOnlyHint=true, and the description adds useful behavioral context: when a request is blocked, the tool returns the reason, supporting evidence, and an alternative. It also calls out specific nonexistent APIs, going beyond what annotations provide. No contradiction with annotations.

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

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

Two sentences carry substantial value with no waste. The first states the core behavior and outputs; the second gives a mandatory-before-coding directive with concrete, high-risk examples. The most important usage guidance is front-loaded.

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

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

Although there is no output schema, the description adequately covers return behavior (why, evidence, alternative) and the most common misuse scenario. For a single-parameter, read-only feasibility check, nothing critical is missing for an agent to call it correctly.

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

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

Schema coverage is 100% and the single 'request' parameter is already described as 'The user request in their own words. Any language is accepted.' The description reinforces this by referring to 'a user request' but adds no meaningful semantic detail beyond the schema.

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

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

The description clearly states the tool's purpose: checking whether a request can be built with a behavior pack and the @minecraft/server API. It also distinguishes this from sibling validation tools by focusing on feasibility and blocked-request outcomes rather than syntax or schema validation.

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

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

The description gives explicit timing guidance: 'Call this BEFORE writing any code or JSON.' It also warns about the most commonly hallucinated APIs. It doesn't explicitly name sibling tools as alternatives for other scenarios, so it falls just short of a 5.

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