acs_download_config

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

With no annotations, the description carries the burden of behavioral disclosure. It explains that the device will download the file from the given URL and warns about accessibility, which is useful. However, it does not disclose authentication requirements, whether the operation is synchronous, or what happens on failure, leaving gaps.

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 two sentences, front-loaded with the core action and followed by a relevant warning. Every sentence earns its place, and there is no redundant filler.

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 is minimally sufficient for a straightforward RPC: it names the protocol and the URL constraint. However, given no output schema and no mention of response behavior or when to use this vs. sibling tools, the context is not fully 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?

The input schema already provides 100% parameter descriptions. The description's warning about fileUrl essentially echoes the schema's own note ('HTTP/HTTPS，设备可访问'), so it adds no new semantic value beyond what the schema already provides.

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 function: delivering a configuration file to a device via TR-069 Download RPC. It specifies the mechanism ('设备会从 fileUrl 下载文件') and differentiating it from sibling tools that may use push or deploy methods, making the purpose unambiguous.

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 provides a critical usage constraint: fileUrl must be an HTTP/HTTPS URL accessible by the device, not a local ACS path. However, it does not explicitly state when to prefer this tool over alternatives like acs_push_config or acs_deploy_config, nor does it mention exclusions.

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