Format Sheet Range

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

Annotations indicate destructiveHint=false, readOnlyHint=false. The description adds that it applies formatting (mutation, not destructive), specifies color hex format, number format types, and default sheet behavior. This adds helpful context beyond annotations, though it does not mention idempotency or side effects.

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 three sentences, each sentence adds value. It is front-loaded with the main action and key details. No unnecessary information.

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?

With 13 parameters, output schema present, and annotations, the description covers the tool's primary purpose and key formatting details. It does not discuss error cases or return values (output schema covers returns). Reasonably complete for a formatting tool.

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?

Schema description coverage is 100%, so each parameter is documented. The description adds general context on colors and number formats but does not elaborate on each parameter beyond the schema. Baseline 3 is appropriate as the description provides some added value but not extensive.

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 it applies formatting to a range and lists specific formatting types (colors, number formats, text wrapping, alignment, text styling). This distinguishes it from siblings like modify_sheet_values (changes values) and manage_conditional_formatting (conditional rules).

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 explicit guidance on when to use this tool versus alternatives. It mentions default sheet behavior but lacks context on when to prefer formatting over other sheet manipulation tools. Minimal guidance.

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