themes_list_themes

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

No annotations provided. The description discloses it returns a JSON with themes and default themes, indicating a read-only operation. It does not mention any side effects, permissions, or rate limits, but for a list operation with no side effects, it is adequate.

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 sentences: first states purpose, second provides return format. Both are essential and non-redundant. Well-structured and front-loaded.

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?

Given no parameters and low complexity, the description is complete enough. Includes return format, which compensates for lack of output schema details. Could mention that it returns all themes in the registry, but not necessary.

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?

Input schema has 0 parameters, so schema description coverage is 100%. According to guidelines, 0 params baseline is 4. The description adds no parameter info, which is correct as there are none.

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 clearly states 'List all themes registered with the frontend, plus the active default theme.' It specifies the verb (list), resource (themes), and scope (all themes plus default), distinguishing it from siblings like themes_get_theme or themes_set_active_theme.

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?

No explicit guidance on when to use this tool versus alternatives like themes_list_theme_files. However, the simple list nature and return format imply it's for retrieving the current theme configurations, not files. Sibling context helps, but description lacks when-not-to-use or exclusionary statements.

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