get_v1_story_download_by_url

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

No annotations are provided, so the description must convey behavioral traits. It states the tool downloads a file, implying a data retrieval operation, but it does not disclose whether authentication is required, how the file is returned (stream, redirect, raw bytes), or any error conditions. With no annotations, this is insufficient for a download operation.

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 plus an example, which is reasonably concise. However, the first sentence is repeated twice, adding unnecessary redundancy. The example is lengthy but serves as a concrete illustration. Overall, it is efficient but could be tightened.

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?

Given the lack of output schema and annotations, the description should provide more context about what the tool returns (e.g., file content, download link) and any prerequisites or side effects. It does not address these, making it incomplete for a download tool with one parameter.

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 schema has 0% description coverage, but the description clarifies that the 'url' parameter should be a story file URL (not a page URL) and provides an example. However, it does not explain constraints like valid URL formats, expiration, or file size limits, leaving room for misinterpretation.

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 'Download story file by URL to file' and provides an example URL. The verb 'download' and resource 'story file' are specific. However, it does not differentiate from close siblings like get_v1_story_download or get_v1_story_download_by_story_url, which may have similar purposes.

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 mentions where to obtain the URL ('/v1/story/by/id' or '/v1/story/by/url'), but it gives no guidance on when to use this tool over its siblings (e.g., get_v1_story_download_by_story_url). It lacks exclusions or alternative recommendations.

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