Create Virtual_circuit

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

Annotations already indicate readOnlyHint=false (write operation) and destructiveHint=false. The description adds clarity by stating 'This adds a new row to NetBox' and describing the return format (markdown or JSON), which is beyond annotations. No contradictions.

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 very concise: two sentences plus a returns line. Every sentence serves a purpose (action, safety guidance, output format). No redundant or unnecessary information.

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 complexity (11 parameters, no output schema, annotations provided), the description covers the essential behavioral context: it's a write operation, includes a safety warning, and explains output options. It could mention how to use custom_fields or nested objects, but the schema partially covers that. Overall, it is sufficiently complete for an agent to use safely.

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 55%, so many parameters lack descriptions in schema. The tool description does not add meaning for those undocumented parameters (e.g., tenant, comments, provider_account). It only adds guidance for response_format ('Use json when chaining follow-up tool calls'). Overall, the description compensates little for the gap.

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 'create' and the resource 'virtual_circuit', and distinguishes among siblings that also target virtual_circuits (e.g., update, delete, get, list). The phrase 'This adds a new row to NetBox' reinforces the action.

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 advises 'Ask before calling if the user wanted a dry-run', which is a useful safety guideline. However, it does not explicitly state when to use this tool vs. alternatives like updating an existing virtual circuit, or any prerequisites. The guidance is minimal but present.

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