Update Paragraph Style

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the description does not need to restate that this tool mutates the document. It adds useful behavioral context by noting that heading, list, and paragraph changes can be combined in a single call. It does not disclose possible side effects like replacing existing list or paragraph structure, but the annotation coverage keeps this acceptable.

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 front-loaded: the first sentence states the core action and target, and the second sentence expands the capability set without repetition. The closing note that all operations can be applied in a single call is valuable and 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 complex 30-parameter write tool, the description, exhaustive schema, and existing output schema together are complete enough for an agent to select and invoke it correctly. It covers the operation, scope, formatting families, and single-call batching behavior. It could hint more strongly at using inspect_doc_structure for indices, but the schema already documents that for start_index.

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 documents all 30 parameters at 100% coverage, so the baseline is 3. The description adds category-level meaning (named heading styles, list nesting, alignment/spacing/indentation) but does not need to detail individual parameters because the schema already does that thoroughly.

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 names the exact verb ('Apply'), the resource ('paragraph-level formatting, heading styles, and/or list formatting'), and the scope ('to a range in a Google Doc'). This is specific enough to distinguish it from text-editing tools like modify_doc_text, insert_doc_elements, or generic batch_update_doc.

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 clear context by enumerating the formatting families it handles, so a capable agent can infer when to use it. However, it never explicitly contrasts this tool with siblings such as modify_doc_text, insert_doc_elements, or batch_update_doc, and it provides no when-not-to-use guidance.

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