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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds almost nothing beyond that: it doesn't say whether unspecified fields are cleared or preserved (partial vs full replace), whether name/description collisions error, or what happens to a project with dependents. Only the AI-crawl hint carries extra context.

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?

A single short sentence with the resource front-loaded; nothing is padded. It is brief almost to a fault — the same length could have carried semantics about partial updates.

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?

A five-parameter mutation tool with 20% schema coverage, no output schema, and only annotation-level behavior disclosure needs considerably more: what is mutable, whether the update is partial, and what the result contains. The description leaves an agent guessing on all three.

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 20% — only the 'context' analytics parameter is documented, and that lives in the schema, not the description. The description mentions only main_url out of five parameters and gives no format, constraints, or meaning for name, description, or project_id, so it fails to compensate for the coverage gap.

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 (update) and resource (project), and the parenthetical example anchors one concrete use case (setting main_url for AI crawl). It does not distinguish itself from nearby siblings such as update_project_pipeline_gates or create_project/delete_project, so an agent must infer scope.

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 statement of when to use this versus update_project_pipeline_gates or create_project, no prerequisites, and no note that project_id is required. The only usage signal is an inline example of one field, which is not guidance about conditions or alternatives.

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