get_pull_request_coverage

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It offers only a high-level summary without mentioning authentication requirements, rate limits, response format, or any side effects. The 'Get' verb implies read-only, but this is not explicitly stated.

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, front-loaded sentence with no redundant information. Every word earns its place, and it conveys the tool's purpose and scope efficiently.

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 description gives the essence of the tool's output (coverage changes and file-level impact) but does not explain the return value structure or any limitations. For a tool with no output schema and no annotations, slightly more detail on the expected data format would improve completeness, but the simple 3-parameter scope keeps it adequate.

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 coverage is 100% for all three parameters (owner, repo, pull_number), and their descriptions are self-explanatory. The tool description adds no additional meaning to the parameters, so the baseline score of 3 is appropriate.

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 clear verb ('Get') and resource ('coverage data for a specific pull request'), and also specifies the output scope ('coverage changes and file-level impact'). This distinguishes it from sibling tools that target files, commits, repos, or comparisons.

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 use for pull request coverage data, but does not explicitly state when to prefer this over siblings like get_file_coverage or compare_coverage. It lacks direct 'when-to-use' or 'when-not-to-use' guidance, making the usage context only implied.

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