create_users_by_id_lists_reorder

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

Annotations already indicate readOnlyHint=false, idempotentHint=true, and destructiveHint=false, so the safety profile is known. The description adds the endpoint and advises reading the matching GET or /schema endpoint, which is mildly useful, but it does not disclose behavioral details such as side effects or ordering semantics beyond the word 'Reorder'. No contradiction with annotations.

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 short, front-loaded with the core operation, and contains no filler. The Args section adds path/body distinction and a practical pointer for field discovery, though it partially duplicates schema property titles.

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 output schema and annotations, the description covers the basic call mechanics and even offers a strategy for the unknown body shape. However, it leaves the distinction from the very similar sibling reorder tool unstated, and the actual body semantics are deferred to external endpoints rather than summarized.

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?

With 0% schema description coverage, the description must compensate. It clarifies that id is a path parameter and body is the request payload, and it directs the agent to read the matching GET or /schema endpoint to discover the expected fields. This is helpful but stops short of specifying what the body should actually contain.

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 starts with 'Reorder a user's lists', a clear verb+resource statement that explains the operation. It is distinct from the close sibling create_users_by_id_lists_by_list_id_reorder by referring to 'a user's lists' rather than a specific list, but it does not explicitly call out that difference.

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 given about when to use this tool versus alternatives such as create_users_by_id_lists_by_list_id_reorder or other reorder endpoints. The description only states what the tool does, not the conditions that select it or exclusions for other tools.

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