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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety behavior is covered. The description adds value beyond that by disclosing the exact return fields (id, kind, one-line summary, page, live demo, preview link), which matters since there is no output schema.

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?

Three tight sentences, front-loaded with the core purpose, then matching semantics, then return shape and the no-query behavior. Nothing is padded, though the return-field list is slightly list-like and could be trimmed for the description's purpose.

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 a read-only search with no output schema and full schema coverage, the description supplies the missing return-shape information and the zero-argument behavior. Pagination beyond the schema's limit field is not discussed, which is a minor gap.

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%, so the baseline is 3. The description still adds meaning beyond the schema by explaining what the query matches against (title, description, editable content) and what matching scope applies, which the terse enum/integer schema entries do not convey.

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 gives a concrete verb and resource (find Plate's free, finished websites and browser games) plus the qualifying scope (source a coding agent can adapt). It states exactly what is matched (title, description, editable parts), so the agent can distinguish it from get_project (fetch by id) and when_not_to_use_plate without opening any schema.

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 explicitly covers the no-argument case ('With no query, lists them all'), which is meaningful for a 0-required-parameter search. It does not explicitly name get_project as the tool to use once you have an id, so routing guidance is implied rather than stated.

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