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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is known. The description adds nothing beyond that — it doesn't say whether other project fields are preserved, whether the rename is immediate or reversible, or what happens to existing references.

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 words with zero waste and the key information front-loaded, but the brevity is under-specification rather than efficiency for a two-parameter mutation tool.

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?

The tool has no output schema and half the parameters are undocumented, so the description carries the burden of explaining a rename mutation. It does not cover the target project selection, the new-name semantics, or the result, leaving meaningful gaps.

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 coverage is only 50%: `name` has no description and `project_id` documents the use_project session fallback. "Rename" implies `name` is the new project name, which is a small value add, but the description never addresses project_id, the required/optional split, or the 1–60 character constraint.

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?

"Rename a project" states a specific verb (rename) and resource (project), which is clearer than the tool's generic name update_project. It implicitly distinguishes the tool from siblings like create_project, delete_project, and rename_file, though it never names an alternative.

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?

There is no guidance on when to use this versus get_project/use_project/create_project, and no mention of prerequisites such as needing an active project or session. The agent must infer the context of use entirely.

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