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

Annotations already indicate readOnlyHint=false, idempotentHint=true, and destructiveHint=false. The description adds no meaningful behavioral context beyond 'update,' and 'privacy-filtered project metadata' is undefined. There is no annotation contradiction, but the description does not disclose effects, idempotency semantics, or error-prone behavior.

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?

The description is short but not meaningfully concise: 'privacy-filtered project metadata' is jargon, and the verb 'update' conflicts with the tool name create_project. Under-specification and an internal mismatch make the sentence less useful than its brevity suggests.

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?

With four required parameters, no output schema, and no parameter descriptions, an agent cannot tell what create_project actually does, what a hosted link project is, or how idempotencyKey should be used. The create/update contradiction leaves the tool's core operation undefined.

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%, so the description must compensate for four undocumented required parameters. It does not mention displayName, projectType, types, or idempotencyKey at all, leaving their roles and relationships entirely to inference from parameter names.

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 tool is named create_project, but the description says 'Update hosted link project using privacy-filtered project metadata.' This creates a misleading create/update mismatch and never states that a project is being created. 'Hosted link project' and 'privacy-filtered project metadata' are vague and do not distinguish this tool from siblings like project_write or create_chat_handoff.

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 description offers no guidance about when to use this tool versus any alternative. It does not mention related siblings, prerequisites, or conditions under which create_project should be selected over project_write or other project tools.

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