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

No annotations exist, so the description carries the full behavioral burden. It scopes results to 'your' pending and confirmed children, which is useful. But it never states that this is a read-only, side-effect-free operation, nor describes return shape, ordering, or whether pending versus confirmed come back as separate groups.

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?

Two short sentences; the resource scope comes first and the action hand-off second. Nothing redundant, nothing padded.

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, single-optional-parameter listing tool with no output schema, the description plus schema give an agent enough to call it correctly and know the next step. Only the shape of the returned data (how pending vs confirmed are distinguished) is left unspecified.

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?

There is one optional parameter (api_key) with 100% schema coverage, and the schema already explains its format, source (register_agent), and host restriction. The description adds nothing about authentication or the api_key, which is acceptable at this coverage level but earns only the baseline.

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 resource returned: pending child requests (agents that declared you as parent) plus confirmed children. The verb 'list' is implicit rather than stated, but the parenthetical definition of 'child' removes any ambiguity about what is returned. It is distinguishable from decide_child, the mutation tool it routes to.

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?

It explicitly names the follow-up tool and its two actions: 'Confirm or reject with decide_child.' That is real routing guidance. What's missing is the inverse case — when not to call this (e.g., if you have no declared children, or if you need lineage via get_lineage instead).

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