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rongcloud

RongCloud MCP Server

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by rongcloud

join_group

Add one or more users to a specified group chat via RongCloud.

Instructions

Adds one or more users to a specified group chat via RongCloud.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
user_idsYesUser IDs to add to the group. Up to 1000 users.
group_idYesGroup ID
group_nameNoGroup name
Behavior2/5

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

With no annotations, the description should disclose behavioral traits. It only states the action (adds) without mentioning side effects, permissions required, or error conditions. The platform mention is weak behavioral context.

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?

Efficient single sentence with clear structure. It could be slightly more informative without sacrificing conciseness, but it is not verbose.

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?

For a tool with 3 params and no output schema, the description is too brief. It omits details like the requirement that the group must exist, what happens on failure, or the return value.

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 coverage is 100%, so the description adds no new meaning beyond the schema. Baseline 3 is appropriate; the description does not enhance parameter understanding.

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

Purpose5/5

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

The description clearly states the action ('adds one or more users'), the target resource ('specified group chat'), and the platform ('via RongCloud'). It differentiates from sibling tools like 'create_group' and 'quit_group'.

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, no prerequisites or exclusions mentioned. The description is purely functional.

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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