repo_explain_architecture

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

No annotations are present, so the description must fully disclose behavior. It only states the primary action (generating an explanation) and does not mention what the explanation includes, whether it scans files, any side effects, or the nature of the output. This is a significant transparency gap.

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, well-structured sentence that is front-loaded with the core purpose. Every word contributes meaning, with no redundant or wastef ul content.

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 is simple in parameters but lacks an output schema and annotations, and the description does not explain what a 'detailed architectural explanation' entails. It also fails to contextualize how this tool differs from siblings, leaving the agent with insufficient information for confident selection.

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 provides a complete description for the single 'path' parameter, achieving 100% schema coverage. The description adds no additional parameter information, but the high schema coverage justifies the baseline score of 3.

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 generates a detailed architectural explanation of a repository, using a specific verb and resource. However, it does not distinguish itself from sibling tools like repo_explain_project or repo_summarize_repository, so it misses the differentiation required for a 5.

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 guidance is provided about when to use this tool versus alternatives. The description does not mention scenarios, prerequisites, or why one would choose this over repo_explain_project or repo_analyze_repository.

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