get_root

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

With no annotations provided, the description carries the full burden for behavioral disclosure. It states 'Return,' implying a read-only operation, but it does not explain how catalog_url is used, what happens when it is null, or any network/error behavior. This minimal disclosure is insufficient for full transparency.

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, focused sentence that immediately communicates the tool's purpose. It contains no filler or redundant content, making it appropriately concise and front-loaded.

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 the tool's simplicity and the presence of an output schema, the description could still adequately cover usage and parameter semantics. However, it omits any explanation of catalog_url and lacks guidance on when to call this tool relative to siblings. The tool is simple, but the description leaves key gaps, especially regarding the optional parameter.

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 schema has one parameter, catalog_url, with 0% description coverage, and the tool description does not mention this parameter at all. The phrase 'for a catalog' vaguely hints at its purpose, but the description adds no explicit meaning beyond the parameter name and type in the schema.

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 verb 'Return' and the resource 'STAC root document for a catalog,' making the tool's function unambiguous. However, it does not explicitly distinguish itself from sibling tools like get_capabilities, which also return server-level resources, so it earns a 4 rather than 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 on when to use this tool versus alternatives. The description only states the action and resource, with no mention of prerequisites, exclusions, or when it is appropriate to call get_root over other catalog-related tools.

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