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

Annotations already cover read-only/idempotent/non-destructive behavior. The description adds useful context beyond those flags: the result depends on the blog's active theme, and the call returns both the settings schema and current values. No contradictions.

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?

One short sentence front-loads the verb, resource, and active-theme scope. Every phrase adds information and there is no filler.

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, one-parameter, read-only tool with an output schema and robust annotations, the description supplies all needed context: what it returns, the active-theme dependency, and how to find blogId. No relevant invocation details are missing.

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 only one parameter and 100% schema description coverage, the schema fully documents blogId and even supplies the list_blogs discovery hint. The description adds no parameter-specific semantics beyond tying the value to the blog's active theme, so baseline 3 applies.

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 the exact operation ('Get') and object ('theme settings schema and current values') and scopes it to 'a blog's active theme,' distinguishing it from theme-file tools and update_theme_settings.

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 read-only retrieval intent is clear and the schema hints to use list_blogs for blogId, but the description does not explicitly say when to prefer this over update_theme_settings or get_theme_file. Usage context is implied rather than stated.

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