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

Annotations already declare this is a non-readonly, non-destructive, non-idempotent create, so the safety profile is covered. The description adds real value by disclosing the return contract (project_id) and its role in a tool chain, but says nothing about permissions, visibility of the new project, or failure behavior beyond the schema.

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?

Three short sentences, verb-first and front-loaded, with the chaining hint last. "Every field is optional" is marginally redundant against the schema's empty required list but still aids fast scanning.

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 three-optional-parameter creator with annotations and an output schema, the description covers purpose, optionality, and downstream consumption; return shape needn't be explained. Only preconditions (course validation, permissions) are left to the schema.

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%, with each parameter carrying examples, bounds, and omit-behavior, so the schema does the heavy lifting. The description only adds "every field is optional," which restates the required-list, so the baseline 3 applies.

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?

"Create a new project" gives a specific verb and resource, and the name/title distinguish it from update-project and get-project-state. It stops short of explicitly naming those siblings, so the differentiation is implied rather than stated.

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 implies usage by naming the downstream tools (add-document-sources, write-artifact, request-creation) that consume the returned project_id, making this the workflow entry point. It never says when *not* to use it — e.g. versus get-project-state to reuse an existing project — so the guidance is implied rather than explicit.

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