excel_validate_formula_syntax

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

Annotations already declare readOnlyHint=true, so the description's note 'without applying it' adds confirmation but not new behavioral context. It does not describe what happens on invalid syntax (error vs boolean) or any side effects, but these are less critical given the read-only nature. The description is adequate but not rich.

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 succinct sentence that immediately states the core action and key constraint. No wasted words. The information is front-loaded and easy to parse.

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 validation tool with one parameter and a read-only annotation, the description covers the basic function. However, without an output schema, it fails to explain the return value (e.g., boolean, error message), which is important for an agent to interpret results. This gap slightly reduces completeness.

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 coverage is 100% with the parameter description 'Formula to validate (without = sign)'. The tool description does not add further meaning to the parameter—it only reiterates the validation aspect. Baseline 3 is appropriate since the schema already handles parameter semantics.

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 validates Excel formula syntax and does not apply it. This is a specific verb-resource combination that distinguishes it from tools like excel_set_formula which actually write formulas. However, it does not explicitly differentiate from other validation tools like excel_validate_range, though the purpose is clear.

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 explicit guidance on when to use this tool versus alternatives. While the name and description imply it should be used before setting a formula, the description does not state this directly or mention when not to use it. Sibling tools like excel_set_formula suggest a workflow, but the description lacks this context.

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