register_driver

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 explaining side effects. It only says 'Register', which implies creation, but does not disclose what happens on duplicate phone/email/license, whether the operation is idempotent, or what response is returned. This is a significant gap for a mutation tool.

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 superfluous content. It clearly communicates the core purpose without wasting tokens.

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 tool's complexity (9 required parameters, no output schema, no annotations), the description is too sparse. It does not explain what 'register' entails—such as success/failure behavior, unique constraints, or workflow implications—leaving the agent with insufficient context for a write operation.

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 input schema fully documents all 9 parameters. The description adds no additional meaning beyond grouping them into 'driver and vehicle', so the baseline score of 3 is appropriate.

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 verb 'Register' with the resource 'a new driver and their vehicle' in the 'Atithi system'. This distinguishes it from sibling tools like verify_driver and update_driver_details, which imply different actions on existing drivers.

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 use for adding new drivers, but does not explicitly state when to use this tool versus alternatives such as update_driver_details. No prerequisites, exclusions, or alternative tool recommendations are provided.

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