repository_summary

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

With no annotations, the description carries the burden of behavioral disclosure. It states the operation is 'Read', implying a non-mutating action, and specifies it operates on a local Git repository. However, it does not explain potential failure modes, output format, or side effects beyond the basic premise. This is adequate for a simple read tool but not rich.

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 sentence with no redundant information. It front-loads the core action ('Read') and lists the specific data items returned, making it highly concise and easy to parse.

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 simple tool with one parameter, no output schema, and no annotations, the description sufficiently explains what the tool does and what it returns (branch, working-tree, remote names, latest commit metadata). It could mention caveats like requiring a valid Git repository, but the parameter schema already indicates 'local repository path', making the description adequately complete.

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 is fully described (100% coverage) with a clear description for the cwd parameter ('Local repository path. No network access is used.'). The tool description adds little beyond what the schema already provides, meeting the baseline for good schema coverage.

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 reads branch, working-tree, remote names, and latest commit metadata from a local Git repository. This is a specific verb+resource+scope that distinguishes it from sibling tools like recent_changes or file_hotspots, which focus on different aspects of repository history.

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 its siblings (recent_changes, file_hotspots, top_level_hygiene). It simply describes what it does without giving context or exclusions, leaving the agent to infer usage.

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