WhatsMCP: MCP for WhatsApp

Leave Chat

wa_leave_chat

Destructive

Leave a group or unfollow a channel on one of your accounts, by its JID.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`jid`	Yes	the group (…@g.us) or channel (…@newsletter) JID to leave, as returned by wa_list_groups / wa_list_channels
`account_id`	Yes	the account, as returned by wa_list_accounts

Output Schema

TableJSON Schema

Name	Required	Description
`items`	No	the rows of a list operation
`status`	Yes	ok (the operation succeeded) or refused (see refusal; for wa_update_group, applied lists the changes that took effect before it)
`applied`	No	wa_update_group only: the settings that were changed, in order — on a refusal, the ones that took effect before it
`refusal`	No	present only when status is refused
`summary`	No	a human-readable result
`group_jid`	No	the new group's JID (wa_create_group only) — use it as wa_send_message's 'to'
`invite_link`	No	the group's invite link (wa_create_group or wa_get_group_invite_link)

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedSep 22, 2026

addedOutput schema / properties / applied

Added value: +{
+  "description": "wa_update_group only: the settings that were changed, in order — on a refusal, the ones that took effect before it",
+  "items": {
+    "type": "string"
+  },
+  "type": [
+    "null",
+    "array"
+  ]
+}

changedOutput schema / properties / status / description

Previous value: -"ok (the operation succeeded) or refused (nothing was done)"New value: +"ok (the operation succeeded) or refused (see refusal; for wa_update_group, applied lists the changes that took effect before it)"

First observedSep 17, 2026

TDQS

A3.6/5.0

Behavior3/5

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

Annotations already flag destructiveHint=true and readOnlyHint=false, so the description is not responsible for the safety profile. It adds modest context by distinguishing leaving a group from unfollowing a channel and scoping to an account, but it does not disclose side effects such as loss of membership or the need to rejoin.

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 with no redundant words. Every phrase contributes: the action, the resource types, the account scoping, and the key identifier ('JID').

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

Completeness4/5

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

For a two-parameter tool with a full input schema, output schema, and destructive annotation, the description covers the operation and target sufficiently. It lacks explicit when-to-use guidance, but nothing needed to construct a correct call is missing.

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%, and the description's mention of 'JID' and 'one of your accounts' only reinforces the parameter definitions. It adds no new meaning beyond what the input schema already provides.

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 specific action ('leave' / 'unfollow') applied to a clear resource class ('group' or 'channel') and scopes it to 'one of your accounts'. This makes it immediately distinguishable from sibling tools like wa_join_group, wa_delete_group, and wa_follow_channel.

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 gives no explicit guidance about when to choose this tool over a sibling such as wa_delete_group or wa_join_group. The use case is only implied by the phrase 'leave a group or unfollow a channel', with no exclusions or conditions.

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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