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

The description adds an authorization requirement ('org staff only') that is not present in the annotations, which is valuable behavioral context. It also aligns with destructiveHint=false since creating a new project is not destructive. It does not discuss idempotency or duplicate handling, but for a simple create tool the disclosed auth boundary is the key behavioral trait.

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 a single, front-loaded sentence with no filler words. It states the action, the resource, the scope, and the access condition in eight words, earning its place entirely.

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 create tool with full schema coverage and an output schema, the description covers the essential behavioral context: what is being created, where it is created, and who is allowed to create it. No critical invocation details are 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?

The input schema has 100% description coverage for all three parameters, including defaults and formats, so the description does not need to repeat parameter details. The description adds no parameter-specific meaning beyond the schema, matching the baseline for fully documented schemas.

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 states a specific verb ('Create'), a clear resource ('a project'), and a containing scope ('in an organization'). It also includes an access restriction ('org staff only'), which keeps it distinguishable from sibling tools like create_org and create_document.

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 clearly indicates when to use it: to create a project within an organization, and who may do so via 'org staff only.' It does not explicitly name alternatives, but the operation is unambiguous and the access exclusion gives practical usage guidance.

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