excel_write_calculation

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

No annotations are provided, so the description carries full burden. It states this writes a calculation 'for transparency', implying it's a write operation that creates formulas. However, it doesn't disclose critical behavioral traits: whether this overwrites existing cell content, what permissions are needed, how errors are handled, or what the output looks like. For a write tool with zero annotation coverage, this is inadequate.

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 a single, efficient sentence that front-loads the core action. Every word earns its place: 'write a calculation' (action), 'to a cell' (target), 'using a formula' (method), '(not hardcoded value)' (clarification), 'for transparency' (benefit). No wasted words or redundant 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?

Given this is a write operation with 6 parameters, no annotations, and no output schema, the description is insufficiently complete. It doesn't explain what happens after writing (e.g., does it return success/failure, the written formula, or nothing?), doesn't cover error cases, and doesn't provide enough behavioral context for safe invocation. The high parameter count and mutation nature demand more comprehensive description.

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 83% (high), so the baseline is 3 even without parameter details in the description. The description doesn't add meaningful semantics beyond what the schema provides—it mentions 'formula' and 'cell' but these are already covered in schema descriptions. No additional context about parameter relationships or usage examples is given.

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 action ('write a calculation') and resource ('to a cell') with the specific method 'using a formula (not hardcoded value)'. It distinguishes from potential sibling tools like 'excel_write_worksheet' that might write values, but doesn't explicitly differentiate from 'excel_add_formula_with_documentation' which appears similar. The purpose is specific but sibling differentiation is incomplete.

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. It mentions 'for transparency' as a benefit, but doesn't specify scenarios, prerequisites, or exclusions. With many sibling tools including 'excel_add_formula_with_documentation', the lack of comparative guidance leaves usage context unclear.

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