
freecad-scripts
Expert skill for writing FreeCAD Python scripts, macros, and automation. Use when asked to create FreeCAD models, parametric objects, Part/Mesh/Sketcher scripts, workbench tools, GUI dialogs with PySide, Coin3D scenegraph manipulation, or any FreeCAD Python API task. Covers FreeCAD scripting basics, geometry creation, FeaturePython objects, interface tools, and macro development.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/github/awesome-copilot --skill freecad-scripts- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads freecad-scripts automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
FreeCAD Scripts
Expert skill for generating production-quality Python scripts for the FreeCAD CAD application. Interprets shorthand, quasi-code, and natural language descriptions of 3D modeling tasks and translates them into correct FreeCAD Python API calls.
When to Use This Skill
- Writing Python scripts for FreeCAD's built-in console or macro system
- Creating or manipulating 3D geometry (Part, Mesh, Sketcher, Path, FEM)
- Building parametric FeaturePython objects with custom properties
- Developing GUI tools using PySide/Qt within FreeCAD
- Manipulating the Coin3D scenegraph via Pivy
- Creating custom workbenches or Gui Commands
- Automating repetitive CAD operations with macros
- Converting between mesh and solid representations
- Scripting FEM analyses, raytracing, or drawing exports
Prerequisites
- FreeCAD installed (0.19+ recommended; 0.21+/1.0+ for latest API)
- Python 3.x (bundled with FreeCAD)
- For GUI work: PySide2 (bundled with FreeCAD)
- For scenegraph: Pivy (bundled with FreeCAD)
FreeCAD Python Environment
FreeCAD embeds a Python interpreter. Scripts run in an environment where these key modules are available:
import FreeCAD # Core module (also aliased as 'App')
import FreeCADGui # GUI module (also aliased as 'Gui') — only in GUI mode
import Part # Part workbench — BRep/OpenCASCADE shapes
import Mesh # Mesh workbench — triangulated meshes
import Sketcher # Sketcher workbench — 2D constrained sketches
import Draft # Draft workbench — 2D drawing tools
import Arch # Arch/BIM workbench
import Path # Path/CAM workbench
import FEM # FEM workbench
import TechDraw # TechDraw workbench (replaces Drawing)
import BOPTools # Boolean operations
import CompoundTools # Compound shape utilities
The FreeCAD Document Model
# Create or access a document
doc = FreeCAD.newDocument("MyDoc")
doc = FreeCAD.ActiveDocument
# Add objects
box = doc.addObject("Part::Box", "MyBox")
box.Length = 10.0
box.Width = 10.0
box.Height = 10.0
# Recompute
doc.recompute()
# Access objects
obj = doc.getObject("MyBox")
obj = doc.MyBox # Attribute access also works
# Remove objects
doc.removeObject("MyBox")
Core Concepts
Vectors and Placements
import FreeCAD
# Vectors
v1 = FreeCAD.Vector(1, 0, 0)
v2 = FreeCAD.Vector(0, 1, 0)
v3 = v1.cross(v2) # Cross product
d = v1.dot(v2) # Dot product
v4 = v1 + v2 # Addition
length = v1.Length # Magnitude
v_norm = FreeCAD.Vector(v1)
v_norm.normalize() # In-place normalize
# Rotations
rot = FreeCAD.Rotation(FreeCAD.Vector(0, 0, 1), 45) # axis, angle(deg)
rot = FreeCAD.Rotation(0, 0, 45) # Euler angles (yaw, pitch, roll)
# Placements (position + orientation)
placement = FreeCAD.Placement(
FreeCAD.Vector(10, 20, 0), # translation
FreeCAD.Rotation(0, 0, 45), # rotation
FreeCAD.Vector(0, 0, 0) # center of rotation
)
obj.Placement = placement
# Matrix (4x4 transformation)
import math
mat = FreeCAD.Matrix()
mat.move(FreeCAD.Vector(10, 0, 0))
mat.rotateZ(math.radians(45))
Creating and Manipulating Geometry (Part Module)
The Part module wraps OpenCASCADE and provides BRep solid modeling:
import FreeCAD
import Part
# --- Primitive Shapes ---
box = Part.makeBox(10, 10, 10) # length, width, height
cyl = Part.makeCylinder(5, 20) # radius, height
sphere = Part.makeSphere(10) # radius
cone = Part.makeCone(5, 2, 10) # r1, r2, height
torus = Part.makeTorus(10, 2) # major_r, minor_r
# --- Wires and Edges ---
edge1 = Part.makeLine((0, 0, 0), (10, 0, 0))
edge2 = Part.makeLine((10, 0, 0), (10, 10, 0))
edge3 = Part.makeLine((10, 10, 0), (0, 0, 0))
wire = Part.Wire([edge1, edge2, edge3])
# Circles and arcs
circle = Part.makeCircle(5) # radius
arc = Part.makeCircle(5, FreeCAD.Vector(0, 0, 0),
FreeCAD.Vector(0, 0, 1), 0, 180) # start/end angle
# --- Faces ---
face = Part.Face(wire) # From a closed wire
# --- Solids from Faces/Wires ---
extrusion = face.extrude(FreeCAD.Vector(0, 0, 10)) # Extrude
revolved = face.revolve(FreeCAD.Vector(0, 0, 0),
FreeCAD.Vector(0, 0, 1), 360) # Revolve
# --- Boolean Operations ---
fused = box.fuse(cyl) # Union
cut = box.cut(cyl) # Subtraction
common = box.common(cyl) # Intersection
fused_clean = fused.removeSplitter() # Clean up seams
# --- Fillets and Chamfers ---
filleted = box.makeFillet(1.0, box.Edges) # radius, edges
chamfered = box.makeChamfer(1.0, box.Edges) # dist, edges
# --- Loft and Sweep ---
loft = Part.makeLoft([wire1, wire2], True) # wires, solid
swept = Part.Wire([path_edge]).makePipeShell([profile_wire],
True, False) # solid, frenet
# --- BSpline Curves ---
from FreeCAD import Vector
points = [Vector(0,0,0), Vector(1,2,0), Vector(3,1,0), Vector(4,3,0)]
bspline = Part.BSplineCurve()
bspline.interpolate(points)
edge = bspline.toShape()
# --- Show in document ---
Part.show(box, "MyBox") # Quick display (adds to active doc)
# Or explicitly:
doc = FreeCAD.ActiveDocument or FreeCAD.newDocument()
obj = doc.addObject("Part::Feature", "MyShape")
obj.Shape = box
doc.recompute()
Topological Exploration
shape = obj.Shape
# Access sub-elements
shape.Vertexes # List of Vertex objects
shape.Edges # List of Edge objects
shape.Wires # List of Wire objects
shape.Faces # List of Face objects
shape.Shells # List of Shell objects
shape.Solids # List of Solid objects
# Bounding box
bb = shape.BoundBox
print(bb.XMin, bb.XMax, bb.YMin, bb.YMax, bb.ZMin, bb.ZMax)
print(bb.Center)
# Properties
shape.Volume
shape.Area
shape.Length # For edges/wires
face.Surface # Underlying geometric surface
edge.Curve # Underlying geometric curve
# Shape type
shape.ShapeType # "Solid", "Shell", "Face", "Wire", "Edge", "Vertex", "Compound"
Mesh Module
import Mesh
# Create mesh from vertices and facets
mesh = Mesh.Mesh()
mesh.addFacet(
0.0, 0.0, 0.0, # vertex 1
1.0, 0.0, 0.0, # vertex 2
0.0, 1.0, 0.0 # vertex 3
)
# Import/Export
mesh = Mesh.Mesh("/path/to/file.stl")
mesh.write("/path/to/output.stl")
# Convert Part shape to Mesh
import Part
import MeshPart
shape = Part.makeBox(1, 1, 1)
mesh = MeshPart.meshFromShape(Shape=shape, LinearDeflection=0.1,
AngularDeflection=0.5)
# Convert Mesh to Part shape
shape = Part.Shape()
shape.makeShapeFromMesh(mesh.Topology, 0.05) # tolerance
solid = Part.makeSolid(shape)
Sketcher Module
Create a sketch on XY plane
sketch = doc.addObject("Sketcher::SketchObject", "MySketch") sketch.Placement = FreeCAD.Placement( FreeCAD.Vector(0, 0, 0), FreeCAD.Rotation(0, 0, 0, 1) )
Add geometry (returns geometry index)
idx_line = sketch.addGeometry(Part.LineSegment( FreeCAD.Vector(0, 0, 0), FreeCAD.Vector(10, 0, 0))) idx_circle = sketch.addGeometry(Part.Circle( FreeCAD.Vector(5, 5, 0), FreeCAD.Vector(0, 0, 1), 3))
Add constraints
sketch.addConstraint(Sketcher.Constraint("Coincident", 0, 2, 1, 1)) sketch.addConstraint(Sketcher.Constraint("Horizontal", 0)) sketch.addConstraint(Sketcher.Constraint("DistanceX", 0, 1, 0, 2, 10.0)) sketch.addConstraint(Sketcher.Constraint("Radius", 1, 3.0)) sketch.addConstraint(Sketcher.Constraint("Fixed", 0, 1))
Constraint types: Coincident, Horizontal, Vertical, Parallel, Perpendicular,
Tangent, Equal, Symmetric, Distance, DistanceX, DistanceY, Radius, Angle,
Fixed (Block), InternalAlignment
doc.recompute()
### Draft Module
```python
import Draft
import FreeCAD
# 2D shapes
line = Draft.makeLine(FreeCAD.Vector(0,0,0), FreeCAD.Vector(10,0,0))
circle = Draft.makeCircle(5)
rect = Draft.makeRectangle(10, 5)
poly = Draft.makePolygon(6, radius=5) # hexagon
# Operations
moved = Draft.move(obj, FreeCAD.Vector(10, 0, 0), copy=True)
rotated = Draft.rotate(obj, 45, FreeCAD.Vector(0,0,0),
axis=FreeCAD.Vector(0,0,1), copy=True)
scaled = Draft.scale(obj, FreeCAD.Vector(2,2,2), center=FreeCAD.Vector(0,0,0),
copy=True)
offset = Draft.offset(obj, FreeCAD.Vector(1,0,0))
array = Draft.makeArray(obj, FreeCAD.Vector(15,0,0),
FreeCAD.Vector(0,15,0), 3, 3)
Creating Parametric Objects (FeaturePython)
FeaturePython objects are custom parametric objects with properties that trigger recomputation:
import FreeCAD
import Part
class MyBox:
"""A custom parametric box."""
def __init__(self, obj):
obj.Proxy = self
obj.addProperty("App::PropertyLength", "Length", "Dimensions",
"Box length").Length = 10.0
obj.addProperty("App::PropertyLength", "Width", "Dimensions",
"Box width").Width = 10.0
obj.addProperty("App::PropertyLength", "Height", "Dimensions",
"Box height").Height = 10.0
def execute(self, obj):
"""Called on document recompute."""
obj.Shape = Part.makeBox(obj.Length, obj.Width, obj.Height)
def onChanged(self, obj, prop):
"""Called when a property changes."""
pass
def __getstate__(self):
return None
def __setstate__(self, state):
return None
class ViewProviderMyBox:
"""View provider for custom icon and display settings."""
def __init__(self, vobj):
vobj.Proxy = self
def getIcon(self):
return ":/icons/Part_Box.svg"
def attach(self, vobj):
self.Object = vobj.Object
def updateData(self, obj, prop):
pass
def onChanged(self, vobj, prop):
pass
def __getstate__(self):
return None
def __setstate__(self, state):
return None
# --- Usage ---
doc = FreeCAD.ActiveDocument or FreeCAD.newDocument("Test")
obj = doc.addObject("Part::FeaturePython", "CustomBox")
MyBox(obj)
ViewProviderMyBox(obj.ViewObject)
doc.recompute()
Common Property Types
| Property Type | Python Type | Description |
|---|---|---|
App::PropertyBool | bool | Boolean |
App::PropertyInteger | int | Integer |
App::PropertyFloat | float | Float |
App::PropertyString | str | String |
App::PropertyLength | float (units) | Length with units |
App::PropertyAngle | float (deg) | Angle in degrees |
App::PropertyVector | FreeCAD.Vector | 3D vector |
App::PropertyPlacement | FreeCAD.Placement | Position + rotation |
App::PropertyLink | object ref | Link to another object |
App::PropertyLinkList | list of refs | Links to multiple objects |
App::PropertyEnumeration | list/str | Dropdown selection |
App::PropertyFile | str | File path |
App::PropertyColor | tuple | RGB color (0.0-1.0) |
App::PropertyPythonObject | any | Serializable Python object |
Creating GUI Tools
Gui Commands
import FreeCAD
import FreeCADGui
class MyCommand:
"""A custom toolbar/menu command."""
def GetResources(self):
return {
"Pixmap": ":/icons/Part_Box.svg",
"MenuText": "My Custom Command",
"ToolTip": "Creates a custom box",
"Accel": "Ctrl+Shift+B"
}
def IsActive(self):
return FreeCAD.ActiveDocument is not None
def Activated(self):
# Command logic here
FreeCAD.Console.PrintMessage("Command activated\n")
FreeCADGui.addCommand("My_CustomCommand", MyCommand())
PySide Dialogs
from PySide2 import QtWidgets, QtCore, QtGui
class MyDialog(QtWidgets.QDialog):
def __init__(self, parent=None):
super().__init__(parent or FreeCADGui.getMainWindow())
self.setWindowTitle("My Tool")
self.setMinimumWidth(300)
layout = QtWidgets.QVBoxLayout(self)
# Input fields
self.label = QtWidgets.QLabel("Length:")
self.spinbox = QtWidgets.QDoubleSpinBox()
self.spinbox.setRange(0.1, 1000.0)
self.spinbox.setValue(10.0)
self.spinbox.setSuffix(" mm")
form = QtWidgets.QFormLayout()
form.addRow(self.label, self.spinbox)
layout.addLayout(form)
# Buttons
btn_layout = QtWidgets.QHBoxLayout()
self.btn_ok = QtWidgets.QPushButton("OK")
self.btn_cancel = QtWidgets.QPushButton("Cancel")
btn_layout.addWidget(self.btn_ok)
btn_layout.addWidget(self.btn_cancel)
layout.addLayout(btn_layout)
self.btn_ok.clicked.connect(self.accept)
self.btn_cancel.clicked.connect(self.reject)
# Usage
dialog = MyDialog()
if dialog.exec_() == QtWidgets.QDialog.Accepted:
length = dialog.spinbox.value()
FreeCAD.Console.PrintMessage(f"Length: {length}\n")
Task Panel (Recommended for FreeCAD integration)
class MyTaskPanel:
"""Task panel shown in the left sidebar."""
def __init__(self):
self.form = QtWidgets.QWidget()
layout = QtWidgets.QVBoxLayout(self.form)
self.spinbox = QtWidgets.QDoubleSpinBox()
self.spinbox.setValue(10.0)
layout.addWidget(QtWidgets.QLabel("Length:"))
layout.addWidget(self.spinbox)
def accept(self):
# Called when user clicks OK
length = self.spinbox.value()
FreeCAD.Console.PrintMessage(f"Accepted: {length}\n")
FreeCADGui.Control.closeDialog()
return True
def reject(self):
FreeCADGui.Control.closeDialog()
return True
def getStandardButtons(self):
return int(QtWidgets.QDialogButtonBox.Ok |
QtWidgets.QDialogButtonBox.Cancel)
# Show the panel
panel = MyTaskPanel()
FreeCADGui.Control.showDialog(panel)
Coin3D Scenegraph (Pivy)
from pivy import coin
import FreeCADGui
# Access the scenegraph root
sg = FreeCADGui.ActiveDocument.ActiveView.getSceneGraph()
# Add a custom separator with a sphere
sep = coin.SoSeparator()
mat = coin.SoMaterial()
mat.diffuseColor.setValue(1.0, 0.0, 0.0) # Red
trans = coin.SoTranslation()
trans.translation.setValue(10, 10, 10)
sphere = coin.SoSphere()
sphere.radius.setValue(2.0)
sep.addChild(mat)
sep.addChild(trans)
sep.addChild(sphere)
sg.addChild(sep)
# Remove later
sg.removeChild(sep)
Custom Workbench Creation
import FreeCADGui
class MyWorkbench(FreeCADGui.Workbench):
MenuText = "My Workbench"
ToolTip = "A custom workbench"
Icon = ":/icons/freecad.svg"
def Initialize(self):
"""Called at workbench activation."""
import MyCommands # Import your command module
self.appendToolbar("My Tools", ["My_CustomCommand"])
self.appendMenu("My Menu", ["My_CustomCommand"])
def Activated(self):
pass
def Deactivated(self):
pass
def GetClassName(self):
return "Gui::PythonWorkbench"
FreeCADGui.addWorkbench(MyWorkbench)
Macro Best Practices
# Standard macro header
# -*- coding: utf-8 -*-
# FreeCAD Macro: MyMacro
# Description: Brief description of what the macro does
# Author: YourName
# Version: 1.0
# Date: 2026-04-07
import FreeCAD
import Part
from FreeCAD import Base
# Guard for GUI availability
if FreeCAD.GuiUp:
import FreeCADGui
from PySide2 import QtWidgets, QtCore
def main():
doc = FreeCAD.ActiveDocument
if doc is None:
FreeCAD.Console.PrintError("No active document\n")
return
if FreeCAD.GuiUp:
sel = FreeCADGui.Selection.getSelection()
if not sel:
FreeCAD.Console.PrintWarning("No objects selected\n")
# ... macro logic ...
doc.recompute()
FreeCAD.Console.PrintMessage("Macro completed\n")
if __name__ == "__main__":
main()
Selection Handling
# Get selected objects
sel = FreeCADGui.Selection.getSelection() # List of objects
sel_ex = FreeCADGui.Selection.getSelectionEx() # Extended (sub-elements)
for selobj in sel_ex:
obj = selobj.Object
for sub in selobj.SubElementNames:
print(f"{obj.Name}.{sub}")
shape = obj.getSubObject(sub) # Get sub-shape
# Select programmatically
FreeCADGui.Selection.addSelection(doc.MyBox)
FreeCADGui.Selection.addSelection(doc.MyBox, "Face1")
FreeCADGui.Selection.clearSelection()
Console Output
FreeCAD.Console.PrintMessage("Info message\n")
FreeCAD.Console.PrintWarning("Warning message\n")
FreeCAD.Console.PrintError("Error message\n")
FreeCAD.Console.PrintLog("Debug/log message\n")
Common Patterns
Parametric Pad from Sketch
doc = FreeCAD.ActiveDocument
# Create sketch
sketch = doc.addObject("Sketcher::SketchObject", "Sketch")
sketch.addGeometry(Part.LineSegment(FreeCAD.Vector(0,0,0), FreeCAD.Vector(10,0,0)))
sketch.addGeometry(Part.LineSegment(FreeCAD.Vector(10,0,0), FreeCAD.Vector(10,10,0)))
sketch.addGeometry(Part.LineSegment(FreeCAD.Vector(10,10,0), FreeCAD.Vector(0,10,0)))
sketch.addGeometry(Part.LineSegment(FreeCAD.Vector(0,10,0), FreeCAD.Vector(0,0,0)))
# Close with coincident constraints
for i in range(3):
sketch.addConstraint(Sketcher.Constraint("Coincident", i, 2, i+1, 1))
sketch.addConstraint(Sketcher.Constraint("Coincident", 3, 2, 0, 1))
# Pad (PartDesign)
pad = doc.addObject("PartDesign::Pad", "Pad")
pad.Profile = sketch
pad.Length = 5.0
sketch.Visibility = False
doc.recompute()
Export Shapes
# STEP export
Part.export([doc.MyBox], "/path/to/output.step")
# STL export (mesh)
import Mesh
Mesh.export([doc.MyBox], "/path/to/output.stl")
# IGES export
Part.export([doc.MyBox], "/path/to/output.iges")
# Multiple formats via importlib
import importlib
importlib.import_module("importOBJ").export([doc.MyBox], "/path/to/output.obj")
Units and Quantities
# FreeCAD uses mm internally
q = FreeCAD.Units.Quantity("10 mm")
q_inch = FreeCAD.Units.Quantity("1 in")
print(q_inch.getValueAs("mm")) # 25.4
# Parse user input with units
q = FreeCAD.Units.parseQuantity("2.5 in")
value_mm = float(q) # Value in mm (internal unit)
Compensation Rules (Quasi-Coder Integration)
When interpreting shorthand or quasi-code for FreeCAD scripts:
- Terminology mapping: "box" →
Part.makeBox(), "cylinder" →Part.makeCylinder(), "sphere" →Part.makeSphere(), "merge/combine/join" →.fuse(), "subtract/cut/remove" →.cut(), "intersect" →.common(), "round edges/fillet" →.makeFillet(), "bevel/chamfer" →.makeChamfer() - Implicit document: If no document handling is mentioned, wrap in standard
doc = FreeCAD.ActiveDocument or FreeCAD.newDocument() - Units assumption: Default to millimeters unless stated otherwise
- Recompute: Always call
doc.recompute()after modifications - GUI guard: Wrap GUI-dependent code in
if FreeCAD.GuiUp:when the script may run headless - Part.show(): Use
Part.show(shape, "Name")for quick display, ordoc.addObject("Part::Feature", "Name")for named persistent objects
References
Primary Links
- Writing Python code
- Manipulating FreeCAD objects
- Vectors and Placements
- Creating and manipulating geometry
- Creating parametric objects
- Creating interface tools
- Python
- Introduction to Python
- Python scripting tutorial
- FreeCAD scripting basics
- Gui Command
Bundled Reference Documents
See the references/ directory for topic-organized guides:
- scripting-fundamentals.md — Core scripting, document model, console
- geometry-and-shapes.md — Part, Mesh, Sketcher, topology
- parametric-objects.md — FeaturePython, properties, scripted objects
- gui-and-interface.md — PySide, dialogs, task panels, Coin3D
- workbenches-and-advanced.md — Workbenches, macros, FEM, Path, recipes
FAQ
What does the freecad-scripts skill do?
Expert skill for writing FreeCAD Python scripts, macros, and automation. Use when asked to create FreeCAD models, parametric objects, Part/Mesh/Sketcher scripts, workbench tools, GUI dialogs with PySide, Coin3D scenegraph manipulation, or any FreeCAD Python API task. Covers FreeCAD scripting basics, geometry creation, FeaturePython objects, interface tools, and macro development.
How do I install freecad-scripts?
Run npx skills add https://github.com/github/awesome-copilot --skill freecad-scripts in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/freecad-scripts/ (personal) or .claude/skills/freecad-scripts/ (project).
Which AI agents can use freecad-scripts?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is freecad-scripts safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains freecad-scripts?
It is published by github in github/awesome-copilot, and it is an official skill from the maker of the technology it covers. It has 1,230 recorded installs.
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lark-drive
open.feishu.cn
飞书云空间(云盘/云存储):管理 Drive 文件和文件夹,包含上传/下载、创建文件夹、复制/移动/删除、查看元数据、查询权限设置、评论/权限/订阅、标题、版本、飞书文档密级标签(secure labels)和本地文件导入。用户需要整理云盘目录、处理云空间资源 URL/token、判断链接类型/真实 token/标题,或导入 Word/Markdown/Excel/CSV/PPTX/.base 为 docx/sheet/bitable/slides 时使用;doubao.com 云空间 URL/token 也按资源路径和 token 路由,不回退 WebFetch。不负责:文档内容编辑(走 lark-doc)、表格/Base 表内数据操作(走 lark-sheets/lark-base)、知识空间节点/成员管理(走 lark-wiki)、原生 Markdown 文件读写/patch/diff(走 lark-markdown)。
lark-shared
open.feishu.cn
Use for lark-cli setup/auth tasks: auth login/status/logout, user vs bot identity, business-domain permissions (--domain, including all/docs/drive), missing scopes, revoking authorization, or handling notice JSON.
lark-im
open.feishu.cn
飞书即时通讯:收发消息和管理群聊。发送和回复消息、搜索聊天记录、管理群聊成员、上传下载图片和文件、管理表情回复、发送应用内/短信/电话加急、发送和处理交互卡片(Interactive Card)、监听卡片按钮回调(card.action.trigger)。当用户需要发消息、查看或搜索聊天记录、下载聊天中的文件、查看群成员、搜索群、创建群聊或话题群、管理标记数据、管理 Feed 置顶(添加/移除/查询置顶会话)、管理标签数据、处理卡片回调时使用。