Evolution API WhatsApp MCP Server

Instructions

Implementation Reference

• src/index.ts:925-938 (handler)

  The MCP tool handler function that executes the remove_participants logic by calling the EvolutionAPI service.

  private async handleRemoveParticipants(args: any) {
    const result = await evolutionAPI.removeGroupParticipants(args.instanceName, {
      groupJid: args.groupJid,
      participants: args.participants
    });
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(result, null, 2)
        }
      ]
    };
  }

• src/index.ts:383-398 (schema)

  Input schema definition for the remove_participants tool.

  {
    name: 'remove_participants',
    description: 'Remove participants from a group',
    inputSchema: {
      type: 'object',
      properties: {
        instanceName: { type: 'string', description: 'Instance name' },
        groupJid: { type: 'string', description: 'Group JID' },
        participants: {
          type: 'array',
          items: { type: 'string' },
          description: 'Phone numbers to remove'
        }
      },
      required: ['instanceName', 'groupJid', 'participants']
    }

• src/index.ts:536-537 (registration)

  Registration of the tool handler in the MCP call tool request switch statement.

  case 'remove_participants':
    return await this.handleRemoveParticipants(args);

• src/services/evolution-api.ts:300-306 (helper)

  Helper method in EvolutionAPI service that makes the HTTP POST request to remove group participants.

  async removeGroupParticipants(instanceName: string, data: {
    groupJid: string;
    participants: string[];
  }): Promise<any> {
    const response = await this.client.post(`/group/removeParticipants/${instanceName}`, data);
    return response.data;
  }