list_devices

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds only the GET /devices endpoint, which restates the operation without disclosing additional behavioral context such as return format, pagination, or authorization requirements.

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 brief and front-loaded with the action. However, the 'GET /devices' line is redundant with the tool name and the 'Get System Devices' sentence, so it does not add meaningful value.

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 zero-parameter, read-only list operation with a rich annotation set and an existing output schema, the description is nearly complete. It could have briefly stated that it returns system devices or mentioned when system devices are relevant, but nothing critical is missing.

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?

The tool has zero parameters, so there is no parameter burden for the description. An empty schema with 100% coverage means the description cannot add parameter-level meaning; baseline for no-parameter tools is appropriate.

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 names a specific resource ('System Devices') and a verb ('Get'), and includes the endpoint GET /devices. It is clear, but it does not explicitly distinguish itself from sibling device-related tools such as list_media_grabbers_devices or delete_media_grabbers_devices_by_device_id.

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?

There is no guidance about when to use this tool versus alternatives. The description simply states the operation and endpoint, leaving the agent to infer context from sibling names without any explicit exclusions or selection criteria.

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