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

With no annotations, the description carries the full behavioral burden. It usefully discloses that this is a mutation whose changes are appended to a receipts ledger, but it omits permission requirements, reversibility, status-transition rules, and response behavior.

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 are front-loaded with the actor, purpose, status enum, required identifiers, and audit behavior. There is no redundant or filler text.

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 mutation tool with no annotations, no output schema, four required parameters, and zero schema descriptions, the description is too thin. It leaves request_id semantics, auth requirements, transition constraints, and result behavior unspecified.

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 0%, so the description must compensate for all four parameters. It names listing_id and listing_key and enumerates new_status values, but it completely omits request_id and gives no deeper meaning for listing_key, leaving a required parameter undocumented.

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 ('update') and resource ('job request's status'), enumerates allowed statuses, and scopes the tool to a pro's agent. It does not explicitly differentiate itself from sibling tools, so it stops short of a 5.

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 phrase 'For a pro's agent' and the required listing identifiers imply the intended context, but the description gives no explicit when-not conditions or alternatives such as send_job_request. Usage is therefore implied rather than clearly specified.

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