LangChain Reference home page
Search...
⌘K
Ask AI
GitHub
Main Docs
Deep Agents
LangChain
LangGraph
Integrations
LangSmith
⌘I
Chat LangChain
What can I help with?
Enter
to send
·
Shift+Enter
new line
What are deep agents and how do I get started?
How do I build a React app around a Deep Agent?
How do I stream subagent output to my frontend with useStream?
Menu
Navigation
Projects
LangGraph
LangGraph Checkpoint
LangGraph Store
Checkpoint Postgres
Store Postgres
Checkpoint SQLite
LangGraph Prebuilt
LangGraph CLI
LangGraph SDK
LangGraph Supervisor
LangGraph Swarm
Language
Python
JavaScript
Theme
Light
Dark
Python
langgraph.checkpoint
serde
types
ChannelProtocol
Class
v4.3.1 (latest)
●
Since v1.0
ChannelProtocol
Copy
ChannelProtocol
(
)
Bases
Protocol
[
Value
,
Update
,
C
]
Attributes
attribute
ValueType
:
Any
attribute
UpdateType
:
Any
Methods
method
checkpoint
method
from_checkpoint
method
update
method
get
method
consume
View source on GitHub
Version History