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

Annotations already declare destructiveHint=true and idempotentHint=true, so the description earns credit for adding side-effect context the annotations don't: assignment surfaces the work order in the target operator's list, and reassign=true takes it over from another operator. It does not mention permissions or whether prior assignment history is retained, which matters for a destructive write.

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?

Three tight sentences: write semantics first, then targeting/reassign behavior, then the prerequisite and endpoint. Every sentence carries information and nothing is repeated from the schema.

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?

Covers mutation semantics, targeting, override behavior, and a verification prerequisite – sufficient for a 4-param write tool with no output schema. The only gap is the absence of any statement about what a successful call returns or how conflicts surface.

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 documents all four parameters, including defaults for reassign and assign_operator_id. The description reinforces the two interesting ones (reassign, assign_operator_id) but says nothing about job_id and adds no syntax or format detail beyond the schema – baseline 3.

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?

Opens with an explicit 'WRITE:' marker and a specific verb+resource ('assigns a work order'), then scopes it to the token's own vintrace user or assign_operator_id. This clearly distinguishes it from the read-only siblings vintrace_get_work_order and vintrace_list_work_orders.

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?

Gives a concrete prerequisite ('Check the work order first with vintrace_get_work_order') and explains when reassign=true is needed. It stops short of stating what happens without reassign when a work order is already assigned to someone else, so the failure condition is only implied.

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