merge_table_cells_horizontal

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

The description lacks details about behavioral traits such as whether merging is destructive, if cell content is combined or lost, or any permissions needed. No annotations exist to fill this gap.

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 extremely concise but under-specified; it omits essential details that would justify its brevity.

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 tool with 5 required parameters and no output schema, the description fails to explain the merge logic, cell behavior, or expected outcome, making it insufficient for correct usage.

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?

The input schema has 5 parameters with 0% description coverage, and the tool description adds no explanation of what each parameter represents (e.g., role of 'start_col', 'end_col', 'row_index').

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 uses a specific verb ('Merge'), resource ('cells'), and constraint ('horizontally in a row'), clearly distinguishing it from the sibling tool 'merge_table_cells_vertical'.

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 is provided on when to use this tool versus alternatives like 'merge_table_cells' or 'merge_table_cells_vertical', nor any prerequisites or exclusions.

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