add_drillthrough

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

With no annotations provided, the description bears the disclosure burden. It clearly states side effects: it adds a drill-through page filter and a Back button, and explains the user-visible right-click behavior. This is meaningful behavioral context, though it omits prerequisites, permission needs, or reversibility.

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 compact at two sentences, with the core purpose front-loaded. The trailing 'Ground-truthed from a real report' is extraneous for an agent selecting a tool, but it does not significantly harm clarity or structure.

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 4-parameter tool with no output schema, the description conveys the primary purpose and side effects, but gaps remain: parameter meanings are incomplete, no return behavior is described, and the relation to sibling drillthrough tools is unaddressed. It is adequate but not fully self-contained.

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 schema only describes drillTable and drillColumn; pageName and reportSessionId lack descriptions, yielding 50% coverage. The tool description adds conceptual context about drill-through but does not explain the role of each parameter, especially pageName and reportSessionId. With low schema coverage, the description should compensate but fails to do so.

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: making a page a drill-through target on a column, with specific behavior (right-clicking a data point on other pages offers 'Drill through'). It distinguishes from related sibling tools by focusing on the column-based, intra-report drill-through target behavior, though it does not explicitly name alternatives.

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?

Usage is implied: use this when you want a page to serve as a drill-through target for a specific column. However, there is no explicit guidance on when not to use it or how it relates to sibling tools like set_drillthrough_fields or set_cross_report_drillthrough, leaving some ambiguity for tool selection.

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