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

readOnlyHint=true is consistent with an 'estimate' operation, so there is no contradiction. The description adds the useful fact that three distinct figures come back rather than a single number, but says nothing about side effects, whether estimates are binding, or how quantity/urgency affect the numbers beyond what the schema says.

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?

A single front-loaded sentence with no filler or redundancy. It is efficient, though it is sized at the bare minimum for a tool whose outputs drive budgeting decisions.

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?

An output schema and annotations cover the return shape and safety profile, and what remains missing is modest but real: currency/units, whether estimates are per-unit or total for quantity, and the workflow position relative to post_job. For a low-risk three-parameter tool this is adequate but not thorough.

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 both enums are documented inline (urgency, task_type), so the schema carries the parameter burden. The description adds no information about how quantity interacts with pricing or how task_type maps to the template list, so baseline 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?

Uses a specific verb ('Estimate') and names the exact three outputs produced (buyer price, operator payout, Milewise fee) scoped to human-operator tasks. It is clearly a pricing tool among mostly CRUD/policy siblings, though it does not explicitly contrast itself with list_task_templates or list_subscription_plans.

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 states what the tool computes but never says when to call it, e.g. before milewise.post_job to size a budget, or how it relates to the task templates. No exclusions or alternative path is offered, leaving selection to inference from the name alone.

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