put_user_terminals_by_device_id_l2vpn

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

Adds behavioral context beyond annotations: permission, subscription constraint, max circuits, clearing mechanism. Annotations are minimal; description fills some gaps but does not discuss side effects, idempotency, or success/failure responses. No contradiction with 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?

Description is front-loaded with the main action but includes multiple sentences with HTML line breaks. It is verbose and could be more concise while retaining essential details like permissions and constraints.

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?

The description covers permissions, constraints, and clearing logic, but fails to explain the missing parameter for circuits (input schema only has deviceId). No output schema, so description should describe expected result or response, which it does not. This omission makes the tool incomplete for an agent to use correctly.

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 coverage is 100% with one parameter 'deviceId' described as 'User terminal ID, kit serial number, or dish serial number.' The tool description does not add additional meaning beyond this schema description, meeting the baseline.

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?

Description clearly states 'Set L2VPN VLANs for user terminal', establishing a specific verb and resource. It distinguishes from sibling tools like get_user_terminals_l2vpn for retrieval. However, the input schema lacks parameters for the VLAN/circuit data, causing confusion about how to specify the actual settings.

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?

Provides clear context: required permission, subscription requirement, maximum 2 circuits per PoP, and how to clear circuits. It references another endpoint for available circuits, aiding decision-making. No explicit when-not-to-use or alternatives, but the context is sufficient.

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