explain_formula_cell

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

With readOnlyHint=true in annotations, the description adds value by specifying the exact scope of analysis (direct references, upstream chain, downstream dependents). This goes beyond the annotation and gives the agent a clearer picture of the tool's behavior, though it does not mention all edge cases or return format.

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, well-structured sentence that is front-loaded with the action ('Explain') and resource ('formula cell'). Every word contributes to meaning, with no filler or redundancy.

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?

The tool is moderately complex, and no output schema is provided. The description gives a high-level summary but does not explain return values, how the chain is reported, or how max_depth impacts results. It is adequate but leaves room for ambiguity in interpretation.

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%, so the description must compensate for parameter semantics. It does not explain any of the four parameters (filepath, sheet_name, cell, max_depth) beyond their names. The mention of 'upstream formula chain' hints at max_depth but does not clarify how depth is applied.

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's function: explaining a formula cell's direct references, upstream formula chain, and downstream dependents. This specific verb+resource combination distinguishes it from sibling tools like inspect_formula or analyze_range_impact.

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 implies usage when one needs to understand formula dependencies, but it does not explicitly mention when to use this over alternatives or provide exclusions. Sibling tools like inspect_formula exist, yet no differentiation is mentioned, leaving usage context implicit.

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