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get_group_info

Read-onlyIdempotent

Retrieve WhatsApp group metadata and participant list by providing the group JID.

Instructions

Get group metadata and participants by group JID.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
group_jidYesThe group JID (e.g., 123456789-12345@g.us)
Behavior3/5

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

Annotations already declare readOnlyHint and idempotentHint, so the description does not need to repeat those. However, it adds no further behavioral details like return format or error handling, which would be useful. No contradictions with annotations.

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

Conciseness5/5

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

The description is a single, front-loaded sentence of only 8 words that efficiently conveys the tool's purpose. No wasted words.

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

Completeness3/5

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

For a simple tool with one parameter and no output schema, the description is adequate but lacks details on what 'metadata and participants' includes, and does not mention preconditions like membership. It is minimally complete.

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 single parameter group_jid is well-documented in the schema with a description and example. The tool description adds no additional meaning beyond repeating 'by group JID', so baseline 3 is appropriate given 100% schema coverage.

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 (Get), the resource (group metadata and participants), and the input (by group JID). It distinguishes this tool from siblings like list_groups or analyze_group_overlaps by focusing on a single 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 explicit guidance on when to use this tool versus alternatives such as list_groups or analyze_group_overlaps. The description implies usage for a specific group JID, but does not exclude other contexts or provide prerequisites.

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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