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

Beyond the annotations, the description discloses the returned draft fields, explicitly states that no email is sent and no submission or listing is created, and explains that the submitter must send the draft or authorize an email tool. It also adds a safety instruction to treat draft contents as untrusted submission data.

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?

The purpose is front-loaded in the first sentence, and the remaining sentences add distinct and useful information about inputs, return fields, side-effect boundaries, sending responsibility, and trust handling. There is no filler or repetition.

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?

For an 18-parameter tool with no output schema, the description explains the draft return shape and the critical non-actions. Combined with the rich schema and annotations, it gives an agent enough context to call the tool correctly and understand that the output is an unsent, untrusted draft.

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 description coverage is 100%, so the schema already documents all 18 parameters in detail, including validation constraints and enum meanings. The description only summarizes categories such as game, gameplay, controls, creator, and contact details, adding little parameter-specific meaning 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 states a specific verb and resource: prepare a complete email draft to submit a browser game to Zadely for human editorial review. It clearly distinguishes the tool from sibling read/list/search tools by focusing on submission preparation, and explicitly says it does not create a listing.

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?

It gives a clear usage context: submitting a browser game for human editorial review, with verified details. It also clarifies key boundaries by saying it does not send email, save a submission, or create a listing, but it does not name alternative tools or give explicit when-not-to-use guidance beyond those boundaries.

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