apply_formula

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

The annotation destructiveHint: true already flags a mutating operation. The description adds 'with verification,' which hints at a post-write check but gives no detail on what verification involves (e.g., error messages, recalc). With annotations present, the bar is lower, but the added context is minimal.

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 short sentences, front-loaded with the main purpose. The second sentence adds 'with verification' but is otherwise redundant with the first. It is concise, though slightly under-specified rather than overly verbose.

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 no output schema and no parameter descriptions, the description must cover usage, behavior, and return conventions. It does none of that. It omits error handling, effect on existing values, and how verification results are surfaced. For a mutating tool, this is significantly incomplete.

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 0%, and the description provides no parameter explanations. The four required parameters (cell, formula, filepath, sheet_name) are only named in the schema with no additional meaning. The description entirely fails to compensate for the lack of schema documentation.

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 states a specific action: 'Apply Excel formula to cell.' It clearly identifies the resource (cell) and the operation (applying a formula). It differentiates from siblings like write_data_to_excel (which writes values) and validate_formula_syntax (which validates), though not explicitly.

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?

No guidance on when to use this tool versus alternatives. There is no mention of prerequisites, preferred contexts, or exclusions. The description simply states the action without any decision-making support.

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