pushover_validate_user

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

With no annotations, the description must disclose behavioral traits. It only says it 'validates' and 'lists devices,' without indicating side effects, permissions, rate limits, or whether it is read-only. This leaves the agent uncertain about mutability.

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 one sentence with 12 words, front-loading the main action ('Validate a Pushover user or group key') and adding a clear outcome. No wasted words.

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 the core functionality but lacks details on return format, error handling, or how to obtain the app token. For a simple 3-param tool, it is adequate but not complete.

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 33% (only 'device' has a description). The description adds context that the tool validates keys and lists devices, but does not explain 'app_token' or 'user_key' beyond what the name implies. It partially compensates for low coverage.

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 tool's purpose: to validate a Pushover user or group key and list their registered devices. It uses a specific verb (validate) and resource (user/group key, devices), and the name and sibling tools (e.g., pushover_send_notification) make it distinct.

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 implies the tool is for validation, but it does not explicitly state when to use it vs. alternatives (like pushover_send_notification). No exclusions or prerequisites are mentioned.

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