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企业微信应用号-发送图文卡片消息

wework_app_send_news

Send graphic card messages via WeWork app. Include title, URL, optional image and description to targeted members or all.

Instructions

通过企业微信应用号发送图文卡片消息

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
titleYes标题,不超过128个字符
urlYes跳转链接,最长2048字节,必须包含协议头(http/https)
picurlNo图片URL
descriptionNo描述,不超过512个字符
touserNo接收消息的成员ID,多个用`|`分隔,为`@all`时向该企业应用全部成员发送,默认从环境变量获取
Behavior2/5

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

No annotations provided, so the description carries full burden. It only states the purpose, with no disclosure of behavioral traits like mutability, permissions, rate limits, or error handling.

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?

Single sentence, no redundancy. Front-loaded with the core action. However, could be slightly expanded for a tool with 5 parameters.

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?

With no annotations and no output schema, the description fails to provide return value details, behavioral context, or completeness for a 5-parameter tool.

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?

Schema description coverage is 100%, so baseline is 3. The description adds no additional meaning beyond the schema; it simply restates the tool's function without parameter context.

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 states the specific verb 'send' and resource 'graphic card message via WeChat Work application number', making the purpose clear. However, it does not differentiate from sibling tools like wework_app_send_text or wework_send_news.

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 on when to use this tool versus alternatives (e.g., when to send a graphic card vs text or image). No context about prerequisites or constraints.

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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