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

Explicitly discloses that it changes stored data, is non-idempotent, fires a 'project.created' webhook, and that repeating it creates another project. This aligns with and adds detail beyond the annotations (destructiveHint=true, idempotentHint=false), and the user-confirmation instruction adds further behavioral context. No contradiction.

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?

Two sentences that front-load the action, then state side effects, then give a user-confirmation instruction. No filler, every sentence earns its place.

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 operation with one parameter, the description covers the action, side effects, idempotency, and a safety instruction. An output schema exists, so return value explanation is not required. Nothing an agent needs to call it correctly is 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 fully documents the single 'name' parameter with constraints and a description (1-120 characters). The tool description adds no additional meaning about the parameter beyond the schema, so the baseline of 3 applies given 100% schema coverage.

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 the specific verb 'create' and resource 'one Imagelato project in the caller organization', which clearly distinguishes it from sibling tools that get, list, update, or delete projects. The purpose is unambiguous and unique among the provided siblings.

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?

Provides a clear usage instruction to confirm the name with the user before invoking, which is a valuable safety guideline. It does not explicitly name alternative tools or when-not-to-use conditions, but the create vs. get/list/update/delete context is implicit from the tool name and description. No misleading guidance.

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