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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds real value beyond that: it confirms the read is non-mutating ('does not change it'), describes the return contents, and flags the required Cotlet API key with app access.

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?

Front-loaded with purpose, but the first sentence and the second sentence largely restate the same information (route order, client, address), and the appended API-key note reads as boilerplate. Editing out the duplication would lose nothing.

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?

With no output schema, the description usefully enumerates the returned stop fields and confirms ordering, and it names the auth requirement. It stops short of covering failure/empty cases (e.g., crew with no route that day) but is largely complete for a simple two-param read.

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% for both params (crew/technician name, route day), so the schema carries the semantics. The description only reinforces them ('one crew on one day') without adding format or edge-case detail, so 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?

States a specific verb (get) and resource (a crew's route for one day) plus the returned shape (ordered stops with client, address, service, price). It is distinguishable from sibling reads like list_jobs or get_client, though it never explicitly names them.

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 description explains what the route is but gives no when-to-use guidance, no prerequisites beyond the API key, and no alternative (e.g., list_jobs or a schedule tool) for other day/crew queries. The usage context is only implied.

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