compare_before_after

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions comparing screenshots but does not state whether this is a read-only operation, whether it creates or modifies any artifacts, what inputs are required (e.g., existing screenshots), or what the output looks like. The description adds minimal behavioral context.

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 concise sentence, which is structurally efficient and front-loaded. However, it is under-specified, and the brevity results in a lack of important details. It is not verbose, but it does not earn its place as a complete tool description.

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 has 2 parameters, no output schema, and no annotations, so the description must provide comprehensive context. It fails to explain what the comparison produces, how it fits into the surrounding workflow (e.g., after editing tasks), or any prerequisites. The description is inadequate for an agent to understand the tool's full behavior.

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. It only hints at 'task' (mapping to taskId) but does not explain the purpose of 'pathname' or how the parameters relate to the comparison logic. The description adds little meaning beyond the schema's bare parameter names.

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 ('Compare') and the resource ('before and after screenshots for a task'). This is specific enough to distinguish from siblings like 'capture_responsive_screenshots' or 'run_visual_analysis', though it does not elaborate on what 'compare' entails (e.g., visual diff, pixel comparison).

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 usage guidance is provided. The description does not indicate when to use this tool relative to alternatives, any prerequisites, or scenarios where it should be avoided. This is purely a one-line purpose statement with no contextual direction.

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