Metadata-Version: 2.4 Name: chainlit Version: 2.9.4 Summary: Build Conversational AI. Project-URL: Homepage, https://chainlit.io/ Project-URL: Documentation, https://docs.chainlit.io/ Project-URL: Repository, https://github.com/Chainlit/chainlit Author: Willy Douhard, Dan Andre Constantini License: Apache-2.0 Keywords: Agents,LLM,MCP,chat ui,chatbot ui,conversational ai,copilot,gen ai,langchain,openai Classifier: Environment :: Web Environment Classifier: Framework :: FastAPI Classifier: Programming Language :: JavaScript Classifier: Topic :: Communications :: Chat Classifier: Topic :: Scientific/Engineering :: Artificial Intelligence Classifier: Topic :: Software Development :: Libraries :: Python Modules Classifier: Topic :: Software Development :: User Interfaces Requires-Python: <4.0.0,>=3.10 Requires-Dist: aiofiles<25.0.0,>=23.1.0 Requires-Dist: asyncer<0.1.0,>=0.0.8 Requires-Dist: audioop-lts<0.3.0,>=0.2.1; python_version >= '3.13' Requires-Dist: click<9.0.0,>=8.1.3 Requires-Dist: dataclasses-json<0.7.0,>=0.6.7 Requires-Dist: fastapi>=0.116.1 Requires-Dist: filetype<2.0.0,>=1.2.0 Requires-Dist: httpx>=0.23.0 Requires-Dist: lazify<0.5.0,>=0.4.0 Requires-Dist: literalai==0.1.201 Requires-Dist: mcp<2.0.0,>=1.11.0 Requires-Dist: nest-asyncio<2.0.0,>=1.6.0 Requires-Dist: packaging>=23.1 Requires-Dist: pydantic-settings>=2.10.1 Requires-Dist: pydantic<3,>=2.7.2 Requires-Dist: pyjwt<3.0.0,>=2.8.0 Requires-Dist: python-dotenv<2.0.0,>=1.0.0 Requires-Dist: python-multipart<1.0.0,>=0.0.18 Requires-Dist: python-socketio<6.0.0,>=5.11.0 Requires-Dist: starlette>=0.47.2 Requires-Dist: syncer<3.0.0,>=2.0.3 Requires-Dist: tomli<3.0.0,>=2.0.1 Requires-Dist: uvicorn>=0.35.0 Requires-Dist: watchfiles<2.0.0,>=1.1.1 Provides-Extra: custom-data Requires-Dist: asyncpg<1.0.0,>=0.30.0; extra == 'custom-data' Requires-Dist: azure-identity<2.0.0,>=1.14.1; extra == 'custom-data' Requires-Dist: azure-storage-blob<13.0.0,>=12.24.0; extra == 'custom-data' Requires-Dist: azure-storage-file-datalake<13.0.0,>=12.14.0; extra == 'custom-data' Requires-Dist: boto3<2.0.0,>=1.34.73; extra == 'custom-data' Requires-Dist: google-cloud-storage<3.0.0,>=2.19.0; extra == 'custom-data' Requires-Dist: sqlalchemy<3.0.0,>=2.0.28; extra == 'custom-data' Provides-Extra: dev Requires-Dist: ruff<1.0.0,>=0.9.0; extra == 'dev' Provides-Extra: mypy Requires-Dist: mypy-boto3-dynamodb<2.0.0,>=1.34.113; extra == 'mypy' Requires-Dist: mypy<2.0.0,>=1.13; extra == 'mypy' Requires-Dist: pandas-stubs<3.0.0,>=2.2.2; (python_version >= '3.9') and extra == 'mypy' Requires-Dist: types-aiofiles<24.0.0,>=23.1.0.5; extra == 'mypy' Requires-Dist: types-requests<3.0.0,>=2.31.0.2; extra == 'mypy' Provides-Extra: tests Requires-Dist: aiosqlite<1.0.0,>=0.20.0; extra == 'tests' Requires-Dist: botbuilder-core<5.0.0,>=4.15.0; extra == 'tests' Requires-Dist: discord<3.0.0,>=2.3.2; extra == 'tests' Requires-Dist: langchain<0.3.0,>=0.2.4; extra == 'tests' Requires-Dist: llama-index<1.0.0,>=0.13.0; extra == 'tests' Requires-Dist: matplotlib<4.0.0,>=3.7.1; extra == 'tests' Requires-Dist: moto<6.0.0,>=5.0.14; extra == 'tests' Requires-Dist: openai<2.0.0,>=1.11.1; extra == 'tests' Requires-Dist: pandas<3.0.0,>=2.2.2; extra == 'tests' Requires-Dist: plotly<6.0.0,>=5.18.0; extra == 'tests' Requires-Dist: pytest-asyncio<1.0.0,>=0.23.8; extra == 'tests' Requires-Dist: pytest-cov<6.0.0,>=5.0.0; extra == 'tests' Requires-Dist: pytest<9.0.0,>=8.3.2; extra == 'tests' Requires-Dist: semantic-kernel<2.0.0,>=1.24.0; extra == 'tests' Requires-Dist: slack-bolt<2.0.0,>=1.18.1; extra == 'tests' Requires-Dist: tenacity<9.0.0,>=8.4.1; extra == 'tests' Requires-Dist: transformers<5.0,>=4.38; extra == 'tests' Description-Content-Type: text/markdown

Welcome to Chainlit 👋

Build python production-ready conversational AI applications in minutes, not weeks ⚡️

> ⚠️ **Notice:** Chainlit is now community-maintained. > > As of May 1st 2025, the original Chainlit team has stepped back from active development. The project is maintained by @Chainlit/chainlit-maintainers under a formal Maintainer Agreement. > > Maintainers are responsible for code review, releases, and security. > Chainlit SAS provides no warranties on future updates. > > Want to help maintain? [Apply here →](https://docs.google.com/forms/d/e/1FAIpQLSf6CllNWnKBnDIoj0m-DnHU6b0dj8HYFGixKy-_qNi_rD4iNA/viewform)

Website • Documentation • Chainlit Help • Cookbook

https://github.com/user-attachments/assets/b3738aba-55c0-42fa-ac00-6efd1ee0d148 ## Installation Open a terminal and run: ```sh pip install chainlit chainlit hello ``` If this opens the `hello app` in your browser, you're all set! ### Development version The latest in-development version can be installed straight from GitHub with: ```sh pip install git+https://github.com/Chainlit/chainlit.git#subdirectory=backend/ ``` (Requires Node and pnpm installed on the system.) ## 🚀 Quickstart ### 🐍 Pure Python Create a new file `demo.py` with the following code: ```python import chainlit as cl @cl.step(type="tool") async def tool(): # Fake tool await cl.sleep(2) return "Response from the tool!" @cl.on_message # this function will be called every time a user inputs a message in the UI async def main(message: cl.Message): """ This function is called every time a user inputs a message in the UI. It sends back an intermediate response from the tool, followed by the final answer. Args: message: The user's message. Returns: None. """ # Call the tool tool_res = await tool() await cl.Message(content=tool_res).send() ``` Now run it! ```sh chainlit run demo.py -w ``` Quick Start

## 📚 More Examples - Cookbook You can find various examples of Chainlit apps [here](https://github.com/Chainlit/cookbook) that leverage tools and services such as OpenAI, Anthropiс, LangChain, LlamaIndex, ChromaDB, Pinecone and more. Tell us what you would like to see added in Chainlit using the Github issues or on [Discord](https://discord.gg/k73SQ3FyUh). ## 💁 Contributing As an open-source initiative in a rapidly evolving domain, we welcome contributions, be it through the addition of new features or the improvement of documentation. For detailed information on how to contribute, see [here](/CONTRIBUTING.md). ## 📃 License Chainlit is open-source and licensed under the [Apache 2.0](LICENSE) license.