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

Annotations already declare readOnlyHint=false and idempotentHint=false, so safety profile is covered; the description earns credit for disclosing a real side effect beyond annotations — linked assets are marked unavailable and cannot be rented while the work order is open — plus the underlying POST endpoint. It stops short of describing failure modes (invalid task_type, unknown asset numbers).

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?

Two sentences, front-loaded with the operation and required fields, followed by the side-effect caveat and endpoint. No redundant field enumeration; only marginal content ('POST /tasks.api') that some agents won't need.

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 a 7-parameter mutation tool with no output schema, the description covers inputs and the key side effect but never indicates what the caller gets back (e.g., a work order identifier needed to chain into ezrentout_start_work_order or ezrentout_complete_work_order). That return-value gap is the main incompleteness.

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 schema already carries title, due_date format, priority enum, task_type source, and the mark_items_unavailable default semantics. The description adds only the optionality of assets and repeats the unavailability default, 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?

States a specific verb and resource ('Create a work order') and names the three required inputs plus optional asset linking, which clearly separates it from read-side siblings like ezrentout_get_work_order and ezrentout_list_work_orders. It does not explicitly distinguish itself from the other state-changing siblings (ezrentout_start_work_order, ezrentout_complete_work_order), but 'create' vs 'start'/'complete' is reasonably inferable.

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?

Usage is implied by the field-level requirement that task_type come 'from ezrentout_list_work_order_types', which is a useful prerequisite hint. However, the description never states when to use this versus ezrentout_start_work_order or ezrentout_complete_work_order, nor does it say what must exist beforehand (assets, work order types).

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