update_driver_availability

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It explicitly states that 'All existing entries are replaced,' which is a critical destructive/replacement behavior. It does not mention permissions, response format, or error conditions, but the core side effect is clearly communicated.

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 two short sentences, front-loaded with the primary action and followed by a clarifying detail. Every word earns its place, with no redundancy or filler.

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 this relatively simple tool with fully documented parameters and no output schema, the description sufficiently conveys the tool's purpose and key destructive effect. It could slightly improve by adding usage guidance, but given the low complexity and high schema coverage, it is largely 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%, so the baseline is 3. The description adds the key semantic that the schedule array constitutes the entire new schedule, but it does not provide additional per-parameter details beyond what the schema already documents.

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 a specific verb and resource: 'Replace a driver's entire weekly schedule.' The second sentence reinforces the full-replacement semantics, distinguishing it from related sibling tools like update_driver_details or update_driver_location.

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 implies the use case of updating a driver's complete weekly availability, but it does not explicitly state when to use this tool versus alternatives. It does not mention exclusions or provide alternative tool names, though the 'entire weekly schedule' wording helps signal that partial updates are not supported.

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