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WAHA MCP Server

by yusufekorman

waha_remove_group_participants

Remove specified participants from a WhatsApp group by providing the group ID and an array of participant identifiers.

Instructions

Remove participants from a group

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
groupIdYes
participantsYes
Behavior2/5

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

With no annotations, the description carries full burden for disclosing side effects, permissions, or error behavior. It only describes the removal action, omitting any behavioral details such as whether the group must exist, admin requirements, or what happens if a participant is not in the group.

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 concise sentence that clearly conveys the primary purpose. It is not overly verbose, though it could benefit from additional context without losing conciseness.

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 mutation tool with no annotations and no output schema, the description is too sparse. It lacks information on return values, error conditions, and required permissions, making it incomplete for safe and correct invocation by an agent.

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

Parameters1/5

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

Schema description coverage is 0%, and the description does not explain the parameters beyond their names. 'groupId' and 'participants' are self-explanatory at a basic level, but the description offers no additional context about expected formats (e.g., phone numbers, IDs) or constraints, failing to compensate for the lack of schema descriptions.

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 states a clear action ('Remove participants') and a resource ('group'), distinguishing it from sibling tools, particularly 'waha_add_group_participants'. The verb+resource structure is specific and unambiguous.

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?

The description provides no guidance on when to use this tool vs alternatives, nor any prerequisites or exclusions. It merely states the action without context for an agent to decide between this and other group management tools.

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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