chrome_download_urls

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

The description discloses the key behavioral trait that the tool uses cookies from the selected Chrome tab, indicating it can access authenticated or authorized content. However, with no annotations provided, the description carries the full burden for behavioral transparency, and it does not mention side effects like writing files to disk, handling of existing files, or any rate limits. This leaves significant gaps for a tool that performs downloads.

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 appropriately concise—a single sentence with no redundant words. It front-loads the core action and context, making it easy to scan. However, its brevity comes at the cost of completeness on other dimensions, but for conciseness itself it is well-structured.

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 far from complete for a tool with seven parameters, no annotations, and no output schema. It fails to explain the meaning of outputDir, tabId, debugUrl, overwrite, urlContains, and titleContains, and does not describe any return values or error behavior. The single-sentence overview is insufficient for an AI agent to safely and correctly use this tool.

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 description provides no explanation of the parameters beyond the generic phrase 'direct URLs.' With a schema description coverage of 0%, the description needed to clarify the roles of the seven parameters, especially required ones like urls and outputDir, but it does not. This makes it impossible to understand how to correctly invoke the tool.

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 uses the verb 'Download' and specifies the resource 'authorized direct URLs' with the context 'using cookies from the selected Chrome tab.' This clearly conveys the tool's function and distinguishes it from sibling tools like chrome_save_page or chrome_extract_media, which have different purposes. However, 'authorized direct URLs' is somewhat ambiguous about what constitutes a direct URL or download vs. simply fetching content.

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 no guidance on when to use this tool instead of alternatives. No mention of prerequisites, limitations, or exclusions, such as when to prefer chrome_save_page or chrome_extract_media. The only implied context is that it relies on the selected Chrome tab's cookies, but it does not explicitly say when that is necessary.

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