update_paragraph_style

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

With no annotations provided, the description must fully disclose behavioral traits. However, it lacks details such as whether the operation is destructive (overwrites existing formatting), what permissions are required, or if the changes are reversible. It does not mention that applying a list type will convert existing paragraphs, nor does it address potential side effects. The description is too shallow for a complex mutation tool.

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?

The description is concise and well-structured. A single introductory sentence states the core function, followed by two sentences elaborating on capabilities. Every sentence adds value, and there is no unnecessary repetition or fluff.

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 the tool's complexity (25 parameters, many optional), the description is somewhat sparse. It covers the main features but omits important context such as the need to obtain indices from inspect_doc_structure, the fact that list_type requires existing paragraphs, and that the operation can be applied in a single call. The presence of an output schema (unseen) slightly reduces the burden, but more completeness would help.

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% description coverage, meaning each parameter is already well-documented. The description adds overall context but does not significantly enhance individual parameter understanding beyond the schema. Baseline 3 is appropriate as 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 clearly states the tool's function: applying paragraph-level formatting, heading styles, and list formatting to a range in a Google Doc. It lists specific capabilities (headings, lists, alignment, spacing, indentation). The name is descriptive, but it does not explicitly differentiate from sibling tools like modify_doc_text or format_slides_text, which might also handle formatting. A slight improvement would be to contrast with similar tools.

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 provides no guidance on when to use this tool versus alternatives. There is no mention of prerequisites (e.g., requiring indices from inspect_doc_structure), exclusions, or comparison with other paragraph-formatting tools among the many siblings. An agent would need to infer usage from the schema alone.

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