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

Annotations already declare write/non-destructive/non-idempotent, but the description adds genuinely new behavior: a 3-per-day rate limit, content-moderation constraints (no links, no email), and a dual read/write mode triggered by omitting the title. It still does not say what is returned or what happens to a rejected submission.

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?

Roughly three dense sentences with the core action and the read-mode escape hatch front-loaded; constraint details are packed efficiently into the middle. No filler, though the enumeration of designer names is verbose.

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?

There is no output schema, so the description covers the important return-side fact (calling without a title returns the public idea list). However, with five parameters at 0% schema coverage and no annotations explaining submission outcomes, the undefined 'name' and 'agent_id' fields leave an agent guessing at part of the contract.

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 0%, so the description must carry the load. It documents title length, pitch length, and enumerates the five designer ids (useful, since the schema has no enum), but leaves 'name' and 'agent_id' completely unexplained - two of five parameters.

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?

States a specific verb+resource ('Suggest an idea for a future Game Studio game') and even discloses a second read mode ('Call with no title to read the public ideas list'). It does not name the neighboring concepts (e.g. arena_submit_game, arena_talk_ideas) to disambiguate, so it stops short of 5.

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?

Gives concrete operating rules - title 3-60 characters, pitch up to 400, plain text with no links or email, a daily cap of 3, and a zero-argument path for reading the list. It never says when to prefer a sibling tool or when not to use this one, which keeps it out of 5 territory.

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