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

Annotations already declare readOnlyHint=false, destructiveHint=false, openWorldHint=false, and idempotentHint=false. The description adds useful behavior beyond annotations: it excludes user invitations and instructs the caller to preserve requestId on retries, which is valuable retry guidance for a mutating tool.

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 definition is short and front-loaded with the core action. Every sentence carries distinct information: creation, invitation exclusion, description placement, and retry handling.

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 full schema coverage, output schema present, and annotations covering safety and idempotency signals, the description is nearly complete. It could mention permission or workspace context, but for a create-project tool the major behavioral points are covered.

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 100%, so the schema already explains requestId, name, and description. The description adds only marginal semantic context by noting that an optional description is placed in the initial project document, which does not significantly exceed the schema.

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 uses a specific verb and resource: 'Create a new project for the connected user.' It also scopes the action by clarifying that it 'Does not invite users,' which helps distinguish it from project membership operations such as list_project_members.

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 says to use it 'when requested' and notes it does not invite users, giving implied usage context. However, it does not name alternatives or explicitly state when not to use this tool versus list_projects or other creation tools.

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