Check Firmware Update

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

Annotations already declare readOnlyHint=true and the output schema covers the return shape, so the bar is lower. The description still adds real value by explicitly stating it does not trigger download or installation, which scopes the side effects beyond the generic read-only hint.

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?

A single short sentence with the core action front-loaded and the safety scoping in a parenthetical. Nothing is padded and nothing extraneous is present.

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 check with an output schema and readOnlyHint annotation, the description covers what the tool does and what it does not do. The only gap is that it does not position itself against the neighbouring firmware tools.

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 takes zero parameters, so there is nothing for the description to disambiguate and the baseline is 4. No parameter meaning is claimed or needed.

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?

States a specific verb and resource ('检查是否有新固件' = check for new firmware), which is clear on its own. However, it does not differentiate from closely-related siblings such as get_firmware_version, get_auto_upgrade_status, or start_firmware_upgrade, so an agent must infer the boundary itself.

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 parenthetical '只读，不触发下载与安装' implies this is a safe pre-check rather than the upgrade action, hinting at when to use it instead of start_firmware_upgrade. But no alternative is named and no explicit condition or prerequisite is given, so usage remains inferred rather than stated.

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