UI Report Builder

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions 'creates' reports, implying a write operation, but does not specify permissions required, whether reports are saved or transient, any rate limits, or error handling. The phrase 'drill-down reports with analytical capabilities' hints at interactive features but lacks concrete behavioral details. This is inadequate for a tool with mutation implications and no annotation support.

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: 'Creates comprehensive drill-down reports with analytical capabilities.' It is front-loaded with the core action and resource, with no wasted words or redundant information. Every part of the sentence contributes to understanding the tool's purpose, making it highly concise and well-structured.

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 the complexity of a report creation tool with no annotations and no output schema, the description is insufficient. It lacks details on behavioral aspects (e.g., what 'creates' entails, permissions, or output format), does not differentiate from siblings, and provides no usage guidelines. While the input schema is well-documented, the overall context for safe and effective tool invocation is incomplete, especially for a tool that likely involves data manipulation and UI integration.

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 100% description coverage, with clear documentation for all four parameters (entityType, reportType, dimensions, measures). The description does not add any parameter-specific information beyond what the schema provides, such as examples or usage tips. According to the rules, with high schema coverage (>80%), the baseline score is 3, as the schema adequately handles parameter semantics without additional description input.

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 purpose: 'Creates comprehensive drill-down reports with analytical capabilities.' It specifies the verb ('creates') and resource ('reports') with additional context about their nature ('drill-down' and 'analytical capabilities'). However, it does not explicitly differentiate from sibling tools like 'kpi-dashboard-builder' or 'ui-dashboard-composer,' which might also involve report or dashboard creation, leaving some ambiguity in distinguishing its unique role.

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 does not mention any specific contexts, prerequisites, or exclusions, nor does it refer to sibling tools. For example, it lacks clarity on whether this is for UI-specific reports compared to other analytical tools like 'business-intelligence-insights' or 'smart-data-analysis.' This absence of usage guidelines leaves the agent without direction on tool selection.

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