list_template_themes

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

With no annotations, the description carries full responsibility. It discloses that the tool hits a public API (api.storecake.io), is search/list-oriented (read-only by implication), and returns the fields id, name, preview_url, thumbnail, categories. This goes beyond a minimal description, though it doesn't mention pagination or default language.

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 compact sentences: first states what and where, second states usage and return fields. No fluff, front-loaded, every sentence earns its place.

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 simple search/list tool with all-optional params and no output schema, the description covers the purpose, usage, and return shape sufficiently. It could mention pagination behavior, but the schema already documents page/limit, so this is adequately complete.

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 input schema has 100% coverage with descriptions for all parameters. The description adds no new information beyond the schema; 'by keyword' merely reinforces the 'q' parameter. Baseline 3 is appropriate since the schema does the heavy lifting.

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 uses a specific verb + resource ('Search/list the public Webcake template marketplace') and explicitly states the keyword matching purpose. It distinguishes from sibling tools like list_themes (likely site themes) and semantic_search_themes by specifying the marketplace and keyword-based search.

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 gives a clear usage scenario: 'match customer brief against existing templates by keyword.' This tells the agent when to use it. It doesn't explicitly name alternatives or exclusions, so it falls short of a 5, but the context is unambiguous.

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