get_collection_subcollections

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

No annotations are provided, so the description carries the full behavioral disclosure burden. It adds only the 'direct child' scoping and does not mention read-only behavior, response format, pagination, permissions, or error semantics. This is too thin for an unannotated tool.

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 concise, front-loaded phrase with no filler or redundancy. Every word contributes meaning, and it is far more scannable than a longer, repetitive explanation.

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, with one required parameter and no output schema, so the bar is lower. However, because there are no annotations, the description alone must convey enough to use the tool correctly; it stops at the operation and scope without describing the return shape, pagination, or hierarchy depth guarantees, leaving notable gaps.

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 has 100% coverage for the single parameter, including its UUID format and a basic description ('The collection UUID'). The description adds no parameter-specific meaning, but the schema already handles this adequately, so baseline 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 clearly identifies the verb ('Get') and the exact resource ('direct child sub-collections'), which is a specific and meaningful scope. This distinguishes it from related siblings like get_collection_ancestors and get_collection_full_path, which handle different hierarchy relationships.

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 phrase 'direct child sub-collections' implies when this tool should be used—when only immediate children are needed—but there is no explicit when-to-use or when-not-to-use guidance. No alternative tools are named or excluded, so the routing is left to inference.

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