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

Annotations already cover readOnly, idempotent, openWorld and non-destructive traits, so the bar is lower. The description still adds real behavioral context: old projects without an adopted guide get an initial suggestion, and existing assets retain their saved guide versions, which is meaningful fallback and versioning behavior beyond the annotations.

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 tightly written sentences with the primary action front-loaded and edge cases following. No filler, though the structure is a touch terse for the edge-case behavior it packs in.

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?

No output schema exists, so the description carries the burden of explaining the return, and it only vaguely describes what a 'guide' or 'initial suggestion' contains. It handles edge-case behavior well but leaves the shape of the returned guide unspecified.

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?

With schema description coverage at 0%, the description must compensate for the undocumented projectId parameter, but it never mentions it. The parameter name is self-explanatory, which prevents a 1, but no format, scope, or meaning is added.

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 a specific verb and resource ('Read the current guide'), and the mention of 'initial suggestion' implicitly distinguishes it from suggest_project_style and save_project_style_guide. It is clear what the tool returns, though it doesn't name the sibling alternatives outright.

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 read context and notes the fallback for old projects, but gives no explicit when-to-use guidance or direction toward suggest_project_style or save_project_style_guide. Usage is inferable rather than stated.

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