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

Annotations already establish the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false), so the description only needs to add context. It contributes a real behavioral constraint the annotations do not carry: the Build plan or higher entitlement requirement, which an agent needs to predict authorization failures.

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, zero redundancy. The core action and scope come first, and the plan requirement is a single tight clause rather than padding.

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?

An output schema exists, so return-value explanation is not the description's burden. With no parameters, a read-only annotation set, and the plan gating noted, there is nothing material an agent needs in order to call this correctly.

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?

The tool takes zero parameters, so per the baseline this dimension scores 4. The description correctly avoids inventing parameter detail and adds nothing that conflicts with the empty schema.

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 (lists every theme) plus the scope (in the workspace), which is enough to separate it from get_theme (singular) and create_theme. It does not explicitly name a sibling or articulate the singular-vs-plural distinction, so it stops short of a 5.

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 phrase 'lists every theme' implies the enumeration use case, so an agent can infer this is the bulk-retrieval path. However there is no explicit guidance on when to prefer this over get_theme, nor any note on filtering, and the plan prerequisite is stated as a fact rather than as a usage condition.

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