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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere. The description's contribution is the returned field set (status, kind, files, model, published address, preview path), which is genuinely useful given there is no output schema, but it says nothing about not-found behavior, permissions, or whether model/published fields can be null.

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 short, front-loaded phrase with zero filler; the field enumeration is compact. It is slightly under-specified rather than padded, so brevity is an asset but not a perfect one.

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 simple idempotent read with rich annotations, the main open questions are the projectId format/source and behavior on missing projects, neither of which is addressed. The field list partially compensates for the absent output schema, making it adequate but with clear gaps.

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 0% and the description never mentions projectId — no indication of where to obtain it, whether it accepts slugs versus IDs, or what happens with an unknown value. The only structured hint is the regex pattern in the schema, so the description leaves the single required parameter semantically bare.

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 fragment 'One project' plus the enumerated fields makes clear this retrieves a single project record and what it returns, which distinguishes it from list_projects and read_project_file. It never states the verb explicitly ('retrieve/fetch by ID'), so it falls short of a fully specific verb+resource statement.

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?

There is no when-to-use guidance, no preconditions, and no mention of the obvious alternatives (list_projects for enumeration, read_project_file for file contents). The only routing signal is the implicit singular/plural contrast with list_projects, which the agent must infer.

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