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juejin-mcp-server

by ztxtxwd

predict_popularity

Forecast the popularity and viral potential of Juejin articles or pins. Provide content ID, type, and prediction horizon to get expected engagement.

Instructions

预测内容受欢迎程度和传播潜力

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
content_idYes内容ID
content_typeYes内容类型
prediction_horizonNo预测时间范围(小时)
Behavior2/5

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

With no annotations, the description carries the full burden of disclosing behavior. It only states what the tool does (predicts) without indicating whether it is read-only, what data it uses, whether it modifies anything, or what the output format is. This lack of transparency is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, clear sentence with no fluff. It is appropriately front-loaded, but its brevity leaves out important context. Still, it is efficient and not padded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool has no annotations, no output schema, and a very brief description. It fails to explain what 'popularity' means, how predictions are made, what the output looks like, or when to use it compared to sibling tools. This is insufficient for an AI agent to fully understand the tool's behavior.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema covers 100% of parameters with descriptions, so the baseline is 3. The tool description does not add any additional meaning beyond the schema, so it neither enhances nor detracts from parameter understanding.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's function: to predict content popularity and dissemination potential. It uses a specific verb ('predict') and resource ('content'), but does not differentiate it from sibling tools like analyze_trends or get_trending_articles, which could also relate to popularity.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. There is no mention of ideal scenarios, exclusions, or how it compares to similar analysis tools in the sibling list.

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

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