explore_area

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

The description discloses key behavioral traits: it performs exploration (non-destructive), returns multiple sections, and warns that 'imports' and 'tests' can be 'heavy on large areas'. While it doesn't explicitly state read-only, the context implies it. No annotation contradiction exists.

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 concise (5 sentences), front-loaded with the core purpose, and each sentence adds unique value. No wasted words; structure efficiently conveys purpose, usage, and behavior.

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 no output schema, the description explains what sections are returned. It covers default behavior, optional inclusions, and performance considerations. A minor gap is the lack of return format details (e.g., JSON structure), but overall it is complete enough for a tool with two simple parameters.

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?

Input schema already describes parameters (path, include) with 100% coverage. The description adds value by explaining the default of include (['outline','changes']) and the rationale behind it, plus more detail on what each section entails. This goes beyond the schema's basic enum listing.

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: 'One-call exploration of a directory' and lists specific outputs (outline, imports, tests, changes). It distinguishes itself from sibling tools by suggesting 'Use INSTEAD OF separate outline + related_files + git log calls', making the unique value proposition explicit.

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 explicit usage guidance: when to use this tool (instead of separate calls), when to opt into optional sections, and even references telemetry data explaining the default behavior change. This helps the agent make informed decisions about using the tool versus alternatives.

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