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Metadata-Version: 2.4
Name: langchain-protocol
Version: 0.0.15
Summary: Python bindings for the LangChain agent streaming protocol
Project-URL: Homepage, https://github.com/langchain-ai/agent-protocol/tree/main/streaming
Project-URL: Repository, https://github.com/langchain-ai/agent-protocol
Project-URL: Issues, https://github.com/langchain-ai/agent-protocol/issues
License: MIT
License-File: LICENSE
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Programming Language :: Python :: 3.13
Classifier: Programming Language :: Python :: 3.14
Classifier: Topic :: Scientific/Engineering :: Artificial Intelligence
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: <4.0.0,>=3.10.0
Requires-Dist: typing-extensions<5.0.0,>=4.7.0
Description-Content-Type: text/markdown
# langchain-protocol
Python bindings for the [LangChain agent streaming protocol][streaming].
This package provides generated `TypedDict` and `Literal` definitions for the
protocol's commands, events, results, and payload shapes. It does not include a
runtime client, transport, or helper APIs &mdash; it is intended as a source of
typing primitives only.
The types are generated from [`protocol.cddl`][cddl], the source of truth for
the wire format. See the [streaming protocol overview][streaming] for the
full design, channel model, and transport details.
[streaming]: https://github.com/langchain-ai/agent-protocol/tree/main/streaming
[cddl]: https://github.com/langchain-ai/agent-protocol/blob/main/streaming/protocol.cddl
## Installation
```bash
pip install langchain-protocol
```
## Usage
```python
from langchain_protocol import Command, SubscribeParams
params: SubscribeParams = {
"channels": ["messages", "lifecycle"],
}
subscribe: Command = {
"id": 1,
"method": "subscription.subscribe",
"params": params,
}
```
## What this package includes
- `TypedDict` definitions for commands, events, results, and payload shapes
- `Literal` and union aliases for protocol enums and tagged unions
- A `py.typed` marker so type checkers pick up the bundled annotations
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Wheel-Version: 1.0
Generator: hatchling 1.29.0
Root-Is-Purelib: true
Tag: py3-none-any
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MIT License
Copyright (c) 2026 LangChain, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.