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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so safety is covered. With no output schema, the description usefully discloses the shape of the payload (download contents, change surface, requirements, licences, archive version/SHA-256, editor instructions), which is genuine behavioral context beyond the 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?

One front-loaded sentence opens with the core purpose ('Full facts for one free project by id'), then enumerates the payload. The list is dense but every clause maps to real returned content rather than filler, so it earns its length.

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 single-parameter, read-only retrieval tool with no output schema, the description covers what the agent gets back and the annotations cover the safety profile. Nothing needed to call it correctly is missing.

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 there is a single id parameter with its own pattern and description, so the schema does the heavy lifting. The description only repeats 'by id' without adding format, validation, or lookup-source detail beyond what the schema supplies; baseline 3 applies.

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 makes clear this returns 'full facts for one free project by id', a specific resource with a single-item scope that contrasts naturally with the sibling search_projects. The verb is implied rather than stated ('get'/'retrieve'), so it is clear but not maximally sharp.

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 'by id' framing implies you must first obtain an id, and the schema bolsters this ('Project id from search_projects'), but the description itself gives no explicit when-to-use or when-not-to-use guidance and never names search_projects or when_not_to_use_plate as alternatives.

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