list_magic_transit_sites

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

There are no annotations, so the description carries full responsibility for behavioral disclosure. It only says 'List', which implies a read operation, but does not disclose pagination behavior, response shape, rate limits, or whether the account must have Magic WAN enabled.

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 front-loaded sentence with no filler. Every word earns its place: the verb, resource, and scoping are all present in a compact, readable form.

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 parameter and no output schema, and the description correctly identifies the action and scope. However, it omits useful context such as return value expectations, pagination, or the relationship to get_magic_transit_site, so it is adequate but not complete.

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?

Schema description coverage is 100% and the only parameter, account_id, is already documented as 'The account ID'. The description's phrase 'for an account' aligns with the schema but adds no new parameter-level meaning, so the baseline 3 applies.

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 states a specific verb ('List'), a distinct resource ('Magic WAN sites'), and a scope ('for an account'). This clearly differentiates it from sibling tools like list_magic_transit_routes and get_magic_transit_site by resource and collection-vs-single semantics.

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 on when to choose this tool over alternatives. It does not mention get_magic_transit_site for retrieving a single site, or list_magic_transit_routes for routes, leaving the agent to infer selection purely from the name.

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