line-bot-sdk
LINE Messaging API SDK for Python
Decision gist · record as of 2026-08-14
Yes. The SDK is production-stable (Apache 2.0, active maintenance, no known vulnerabilities), has low install friction, and is the canonical way to build LINE bots in Python. Install it if you are building any LINE bot or integrating LINE messaging into a Python application.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python >= 3.10.0 and valid LINE channel credentials (access token and channel secret).
- Low install friction with a pure-Python wheel distribution.
- Actively maintained with recent releases (last commit 2026-08-14, 2129 stars).
License · maintenance · safety
Apache License 2.0 (permissive) — Apache License 2.0 (permissive) allows commercial and private use, modification, and distribution with minimal restrictions—suitable for production bot projects.
last release 2026-07-07 (38 days) · last repo commit 2026-08-14 · 2,129 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 11,317,145 downloads/mo, #1,399 on PyPI
Alternatives
Verify before relying
pip install line-bot-sdk
from line_bot_sdk.v3 import WebhookHandler
from line_bot_sdk.v3.messaging import Configuration, ApiClient, MessagingApi, ReplyMessageRequest, TextMessage
handler = WebhookHandler('YOUR_CHANNEL_SECRET')
configuration = Configuration(access_token='YOUR_CHANNEL_ACCESS_TOKEN')
@handler.add(MessageEvent, message=TextMessageContent)
def handle_message(event):
with ApiClient(configuration) as api_client:
line_bot_api = MessagingApi(api_client)
line_bot_api.reply_message_with_http_info(
ReplyMessageRequest(
reply_token=event.reply_token,
messages=[TextMessage(text=event.message.text)]
)
)- Whether the SDK handles rate limiting or retry logic automatically for API calls.
- Specifics on async support beyond aiohttp dependency (e.g., async/await patterns in handlers).
- Whether FlexMessage and RichMenu JSON deserialization covers all message types or has known gaps.
- Full scope of message types and features supported by the MessagingApi client.
What it is and what it does
line-bot-sdk is the official Python client library for LINE's Messaging API, designed to simplify bot development on the LINE platform. It provides webhook parsing and event handling, message sending, and access to LINE's messaging features. The SDK abstracts away HTTP details and signature verification, letting developers focus on bot logic.
The package is built on requests, urllib3, aiohttp, pydantic, and other dependencies, supporting both synchronous and asynchronous workflows. It is actively maintained and supports Python 3.10 through 3.14. Developers typically use it to receive webhook events from LINE, parse them into typed event objects, and reply with formatted messages via the MessagingApi client.
Use it for
- Build a LINE chatbot that echoes or processes user messages in real time.
- Create a customer support bot that routes inquiries to different handlers based on message type.
- Send rich, templated messages to LINE users from a backend service.
- Parse and respond to LINE follow/unfollow and postback events for interactive bot flows.
- Integrate LINE messaging into a web application with webhook callbacks.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The SDK is production-stable (Apache 2.0, active maintenance, no known vulnerabilities), has low install friction, and is the canonical way to build LINE bots in Python. Install it if you are building any LINE bot or integrating LINE messaging into a Python application.
Install
line-bot-sdk on PyPI
Before you install
Low install friction with a pure-Python wheel distribution. Actively maintained with recent releases (last commit 2026-08-14, 2129 stars). Supports Python 3.10–3.14 with 8 runtime dependencies including requests, urllib3, aiohttp, and pydantic.
Requires Python >= 3.10.0 and valid LINE channel credentials (access token and channel secret).
License in practice
Apache License 2.0 (permissive) allows commercial and private use, modification, and distribution with minimal restrictions—suitable for production bot projects.
Quickstart
pip install line-bot-sdk
from line_bot_sdk.v3 import WebhookHandler
from line_bot_sdk.v3.messaging import Configuration, ApiClient, MessagingApi, ReplyMessageRequest, TextMessage
handler = WebhookHandler('YOUR_CHANNEL_SECRET')
configuration = Configuration(access_token='YOUR_CHANNEL_ACCESS_TOKEN')
@handler.add(MessageEvent, message=TextMessageContent)
def handle_message(event):
with ApiClient(configuration) as api_client:
line_bot_api = MessagingApi(api_client)
line_bot_api.reply_message_with_http_info(
ReplyMessageRequest(
reply_token=event.reply_token,
messages=[TextMessage(text=event.message.text)]
)
)Verify before relying
- Whether the SDK handles rate limiting or retry logic automatically for API calls.
- Specifics on async support beyond aiohttp dependency (e.g., async/await patterns in handlers).
- Whether FlexMessage and RichMenu JSON deserialization covers all message types or has known gaps.
- Full scope of message types and features supported by the MessagingApi client.
Package facts
| License | Apache License 2.0 permissive |
| Python support | Supports the current Python release >=3.10.0 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 8 packagesrequestsurllib3aiohttpfuturepydanticaenumpython_dateutilDeprecated |
| Maintenance | Actively maintained 38 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 11,317,145 / month, #1,399 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development |
Evidence: line_bot_sdk-3.25.0-py2.py3-none-any.whl
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