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

Annotations already indicate this is a destructive/non-read-only operation, and the description adds useful context by explicitly stating that history, revisions, and jobs are unaffected. It goes beyond annotation hints without contradicting them, though it does not detail any other side effects or permissions.

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 short sentences front-load the core action and then add the most relevant side-effect clarification. There is no redundant wording or filler, so 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 two-parameter rename operation with a complete input schema, output schema, and annotations, the description is sufficient. It tells the agent what the operation does and which data is preserved, leaving no critical gap for correct invocation.

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 both 'name' and 'projectId'. The tool description adds no parameter-level semantics beyond what the schema provides, so the baseline score of 3 is appropriate.

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, 'Rename a project', and clarifies scope by stating that history, revisions, and jobs are unaffected. This distinguishes it from destructive siblings like project_delete and from project_create/get/list, making the tool's purpose unambiguous.

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 the tool is for renaming and reassures that history, revisions, and jobs are unaffected, which gives some context about safe usage. However, it does not explicitly state when not to use it or mention alternatives such as project_create or project_delete, leaving usage guidance largely implicit.

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