lark-oapi 1.6.7

Lark OpenAPI SDK for Python

Feishu OpenPlatform Server SDK for Python

中文

The Feishu Open Platform provides server-side APIs for messaging, contacts, approval, sheets, Base, and many other product capabilities. This SDK wraps the repeated platform work around API calls, including token management, request signing, encryption/decryption, event dispatching, and typed request/response models.

Documentation

• Preparations before development
• Calling server-side APIs
• Handle events
• Handle card callbacks
• SDK FAQs

Installation

pip install lark-oapi

Python 3.8 or later is required.

Basic Usage

import lark_oapi as lark
from lark_oapi.api.im.v1 import *

client = lark.Client.builder() \
    .app_id("cli_xxx") \
    .app_secret("your_app_secret") \
    .build()

request = CreateMessageRequest.builder() \
    .receive_id_type("chat_id") \
    .request_body(CreateMessageRequestBody.builder()
        .receive_id("oc_xxx")
        .msg_type("text")
        .content("{\"text\":\"hello world\"}")
        .build()) \
    .build()

response = client.im.v1.message.create(request)

One-Click App Registration

lark_oapi.register_app creates an app through the OAuth device flow. It returns a verification URL in on_qr_code; render the URL as a QR code or show it as a link for the user to open in Feishu/Lark.

import lark_oapi as lark


def on_qr_code(info):
    print(info["url"])


result = lark.register_app(
    on_qr_code=on_qr_code,
    app_preset={
        "avatar": [
            "https://example.com/a.png",
            "https://example.com/b.webp",
        ],
        "name": "{user}'s app",
        "desc": "Created by the business platform",
    },
)

print(result["client_id"])

For a real manual E2E run without mocked registration responses:

python3 samples/registration/app_preset_live_e2e.py --open

register_app parameters

Parameter	Description	Type	Required	Default
on_qr_code	Callback when the verification URL is ready. Receives {"url": str, "expire_in": int}	function	Yes	-
on_status_change	Callback on polling status changes. Status values include polling, slow_down, domain_switched	function	No	-
source	Source identifier appended to the QR URL as python-sdk/{source}	string	No	python-sdk
cancel_event	threading.Event used to cancel sync polling	threading.Event	No	-
domain	Custom Feishu accounts base URL	string	No	https://accounts.feishu.cn
lark_domain	Custom Lark accounts base URL used when tenant brand is Lark	string	No	https://accounts.larksuite.com
app_preset	Pre-fill values for the app-creation page. All fields are optional; users can still edit them on the page. Pass raw values; the SDK URL-encodes them automatically	dict	No	-
app_preset.avatar	App avatar URL(s). 1-6 URLs supported; the first one is selected by default. Allowed formats are handled by the Web page: png / jpg / jpeg / webp / gif	string or list[string]	No	-
app_preset.name	App name. Supports the {user} placeholder, replaced by the Web page with the scanning user's name	string	No	-
app_preset.desc	App description. Supports the {user} placeholder	string	No	-

Channel Module

lark_oapi.channel is a high-level module built on top of the OpenAPI client and event transport. It bundles event listening, message normalization, safety policy, outbound sending, media upload/download, card interactions, and streaming replies into a single FeishuChannel entry point.

Use Channel when you are building a conversational bot that needs normalized message events, replies, media handling, card callbacks, mention policy, or WebSocket/webhook transport management.

import asyncio
import os

from lark_oapi.channel import FeishuChannel

channel = FeishuChannel(
    app_id=os.environ["LARK_APP_ID"],
    app_secret=os.environ["LARK_APP_SECRET"],
)

async def on_message(msg):
    await channel.send(
        msg.chat_id,
        {"text": f"echo: {msg.content_text}"},
    )

channel.on("message", on_message)

asyncio.run(channel.connect())

Full Channel documentation:

• Channel module
• Channel quickstart
• Channel reference
• Runnable echo bot sample

Examples

More composite API examples and business scenario samples are available in oapi-sdk-python-demo.

• Send file message
• Send image message
• List users under a department
• Create a Base app with tables
• Robot quick start

License

MIT

Contact Us

Click Server SDK in the upper right corner of the documentation page and submit feedback.