parse_douyin_video_info

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the return format (JSON string) and omits network dependency, error behavior, rate limits, link-expiration handling, or behavior for invalid/ambiguous inputs.

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 compact and well-organized into purpose, parameters, and return sections. Every sentence adds value, and the main action is front-loaded with 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?

For a single-parameter parsing tool with an output schema available, the description covers the essential input and return contract. However, it lacks behavioral context such as error handling, network requirements, and link validity assumptions, making it only minimally 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 description coverage is 0%, but the description compensates by explaining that share_link can be either a Douyin share link or text containing a link. This adds meaningful semantics beyond the bare schema property title 'Share Link' and clearly documents the only parameter.

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 action (parse a Douyin share link) and the outcome (retrieve basic video information), which distinguishes it from the download/text/audio sibling tools by resource and purpose. However, it does not explicitly contrast itself with those siblings, so it stops short of a 5.

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 intended use is implied: when the agent receives a Douyin share link and needs basic video info, this tool is appropriate. But there is no explicit guidance about when not to use it or when to prefer siblings like get_douyin_download_link or extract_douyin_text.

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