Create Vlan

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

Annotations indicate it's not read-only, not idempotent, and not destructive. The description adds that it creates a new row (a write operation) and mentions the dry-run request, which implies a non-reversible action. It also discloses the return format (Markdown or JSON), adding value beyond annotations.

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 exceptionally concise: three short sentences, each serving a distinct purpose (purpose, usage caution, return format). It is front-loaded with the primary purpose. No redundant or trivial 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?

For a tool with 14 parameters, no output schema, and moderate schema coverage, the description omits key behavioral aspects such as error conditions (e.g., duplicate VLAN ID), prerequisites (e.g., existing site/tenant IDs), and the effect of optional parameters. It is adequate but leaves gaps for the agent.

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?

With 50% schema description coverage, the description neither lists nor explains the many optional parameters. The only parameter it touches is response_format via the returns clause. The agent must rely solely on the schema for most parameter meaning, which is insufficient given the complexity.

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 'Create a new vlan in NetBox', which is a specific verb+resource. It distinguishes from sibling tools as the sole VLAN creation tool, and the phrase 'new row' reinforces the purpose.

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 explicitly advises to 'Ask before calling if the user wanted a dry-run', providing clear context for when to use this tool (after user confirmation). However, it lacks explicit guidance on when not to use it or alternatives like updating an existing VLAN.

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