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

Annotations declare a non-readonly, non-destructive, non-idempotent write, and the description adds genuinely new behavior: immutability of revisions, optimistic concurrency, and the guarantee that colors/typography/camera only affect future generation and never rewrite prior assets. That is meaningful context beyond the hints, though it doesn't cover auth or failure behavior on revision mismatch.

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 packed sentences with the core action front-loaded and the side-effect constraint second. No filler text.

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 3-required-param mutation with no output schema and 0% schema documentation, the description gives useful conceptual context but leaves the guide payload shape and the revision-mismatch failure mode unaddressed. Adequate but with clear 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 description coverage is 0%, so the description must compensate. 'Optimistic concurrency' hints at the role of expectedRevision, and the colors/typography/camera mention gestures at the guide object's contents, but projectId is undocumented and the guide's expected structure remains opaque (nested open object).

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 states a specific verb and resource: adopting a new immutable guide revision for a project. It is distinguishable from get_project_style_guide and suggest_project_style by the write semantics, though it never names those siblings explicitly.

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 explicit when-to-use or when-not-to-use guidance, nor any mention of alternatives such as suggest_project_style or get_project_style_guide. Usage is only implied by the write semantics of 'adopt'.

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