SDK (JS/TS)
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk¶
Classes¶
Functions¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / AssistantsClient
Class: AssistantsClient¶
Extends¶
BaseClient
Constructors¶
new AssistantsClient()¶
new AssistantsClient(
config?):AssistantsClient
Parameters¶
• config?: ClientConfig
Returns¶
Inherited from¶
BaseClient.constructor
Defined in¶
Methods¶
create()¶
create(
payload):Promise\<Assistant>
Create a new assistant.
Parameters¶
• payload
Payload for creating an assistant.
• payload.assistantId?: string
• payload.config?: Config
• payload.graphId: string
• payload.ifExists?: OnConflictBehavior
• payload.metadata?: Metadata
• payload.name?: string
Returns¶
Promise\<Assistant>
The created assistant.
Defined in¶
delete()¶
delete(
assistantId):Promise\<void>
Delete an assistant.
Parameters¶
• assistantId: string
ID of the assistant.
Returns¶
Promise\<void>
Defined in¶
get()¶
get(
assistantId):Promise\<Assistant>
Get an assistant by ID.
Parameters¶
• assistantId: string
The ID of the assistant.
Returns¶
Promise\<Assistant>
Assistant
Defined in¶
getGraph()¶
getGraph(
assistantId,options?):Promise\<AssistantGraph>
Get the JSON representation of the graph assigned to a runnable
Parameters¶
• assistantId: string
The ID of the assistant.
• options?
• options.xray?: number | boolean
Whether to include subgraphs in the serialized graph representation. If an integer value is provided, only subgraphs with a depth less than or equal to the value will be included.
Returns¶
Promise\<AssistantGraph>
Serialized graph
Defined in¶
getSchemas()¶
getSchemas(
assistantId):Promise\<GraphSchema>
Get the state and config schema of the graph assigned to a runnable
Parameters¶
• assistantId: string
The ID of the assistant.
Returns¶
Promise\<GraphSchema>
Graph schema
Defined in¶
getSubgraphs()¶
getSubgraphs(
assistantId,options?):Promise\<Subgraphs>
Get the schemas of an assistant by ID.
Parameters¶
• assistantId: string
The ID of the assistant to get the schema of.
• options?
Additional options for getting subgraphs, such as namespace or recursion extraction.
• options.namespace?: string
• options.recurse?: boolean
Returns¶
Promise\<Subgraphs>
The subgraphs of the assistant.
Defined in¶
getVersions()¶
getVersions(
assistantId,payload?):Promise\<AssistantVersion[]>
List all versions of an assistant.
Parameters¶
• assistantId: string
ID of the assistant.
• payload?
• payload.limit?: number
• payload.metadata?: Metadata
• payload.offset?: number
Returns¶
Promise\<AssistantVersion[]>
List of assistant versions.
Defined in¶
search()¶
search(
query?):Promise\<Assistant[]>
List assistants.
Parameters¶
• query?
Query options.
• query.graphId?: string
• query.limit?: number
• query.metadata?: Metadata
• query.offset?: number
Returns¶
Promise\<Assistant[]>
List of assistants.
Defined in¶
setLatest()¶
setLatest(
assistantId,version):Promise\<Assistant>
Change the version of an assistant.
Parameters¶
• assistantId: string
ID of the assistant.
• version: number
The version to change to.
Returns¶
Promise\<Assistant>
The updated assistant.
Defined in¶
update()¶
update(
assistantId,payload):Promise\<Assistant>
Update an assistant.
Parameters¶
• assistantId: string
ID of the assistant.
• payload
Payload for updating the assistant.
• payload.config?: Config
• payload.graphId?: string
• payload.metadata?: Metadata
• payload.name?: string
Returns¶
Promise\<Assistant>
The updated assistant.
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / Client
Class: Client¶
Constructors¶
new Client()¶
new Client(
config?):Client
Parameters¶
• config?: ClientConfig
Returns¶
Defined in¶
Properties¶
assistants¶
assistants:
AssistantsClient
The client for interacting with assistants.
Defined in¶
crons¶
crons:
CronsClient
The client for interacting with cron runs.
Defined in¶
runs¶
runs:
RunsClient
The client for interacting with runs.
Defined in¶
store¶
store:
StoreClient
The client for interacting with the KV store.
Defined in¶
threads¶
threads:
ThreadsClient
The client for interacting with threads.
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / CronsClient
Class: CronsClient¶
Extends¶
BaseClient
Constructors¶
new CronsClient()¶
new CronsClient(
config?):CronsClient
Parameters¶
• config?: ClientConfig
Returns¶
Inherited from¶
BaseClient.constructor
Defined in¶
Methods¶
create()¶
create(
assistantId,payload?):Promise\<Run>
Parameters¶
• assistantId: string
Assistant ID to use for this cron job.
• payload?: CronsCreatePayload
Payload for creating a cron job.
Returns¶
Promise\<Run>
Defined in¶
createForThread()¶
createForThread(
threadId,assistantId,payload?):Promise\<Run>
Parameters¶
• threadId: string
The ID of the thread.
• assistantId: string
Assistant ID to use for this cron job.
• payload?: CronsCreatePayload
Payload for creating a cron job.
Returns¶
Promise\<Run>
The created background run.
Defined in¶
delete()¶
delete(
cronId):Promise\<void>
Parameters¶
• cronId: string
Cron ID of Cron job to delete.
Returns¶
Promise\<void>
Defined in¶
search()¶
search(
query?):Promise\<Cron[]>
Parameters¶
• query?
Query options.
• query.assistantId?: string
• query.limit?: number
• query.offset?: number
• query.threadId?: string
Returns¶
Promise\<Cron[]>
List of crons.
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / RunsClient
Class: RunsClient¶
Extends¶
BaseClient
Constructors¶
new RunsClient()¶
new RunsClient(
config?):RunsClient
Parameters¶
• config?: ClientConfig
Returns¶
Inherited from¶
BaseClient.constructor
Defined in¶
Methods¶
cancel()¶
cancel(
threadId,runId,wait,action):Promise\<void>
Cancel a run.
Parameters¶
• threadId: string
The ID of the thread.
• runId: string
The ID of the run.
• wait: boolean = false
Whether to block when canceling
• action: CancelAction = "interrupt"
Action to take when cancelling the run. Possible values are interrupt or rollback. Default is interrupt.
Returns¶
Promise\<void>
Defined in¶
create()¶
create(
threadId,assistantId,payload?):Promise\<Run>
Create a run.
Parameters¶
• threadId: string
The ID of the thread.
• assistantId: string
Assistant ID to use for this run.
• payload?: RunsCreatePayload
Payload for creating a run.
Returns¶
Promise\<Run>
The created run.
Defined in¶
createBatch()¶
createBatch(
payloads):Promise\<Run[]>
Create a batch of stateless background runs.
Parameters¶
• payloads: RunsCreatePayload & object[]
An array of payloads for creating runs.
Returns¶
Promise\<Run[]>
An array of created runs.
Defined in¶
delete()¶
delete(
threadId,runId):Promise\<void>
Delete a run.
Parameters¶
• threadId: string
The ID of the thread.
• runId: string
The ID of the run.
Returns¶
Promise\<void>
Defined in¶
get()¶
get(
threadId,runId):Promise\<Run>
Get a run by ID.
Parameters¶
• threadId: string
The ID of the thread.
• runId: string
The ID of the run.
Returns¶
Promise\<Run>
The run.
Defined in¶
join()¶
join(
threadId,runId,options?):Promise\<void>
Block until a run is done.
Parameters¶
• threadId: string
The ID of the thread.
• runId: string
The ID of the run.
• options?
• options.signal?: AbortSignal
Returns¶
Promise\<void>
Defined in¶
joinStream()¶
joinStream(
threadId,runId,signal?):AsyncGenerator\<object,any,unknown>
Stream output from a run in real-time, until the run is done. Output is not buffered, so any output produced before this call will not be received here.
Parameters¶
• threadId: string
The ID of the thread.
• runId: string
The ID of the run.
• signal?: AbortSignal
An optional abort signal.
Returns¶
AsyncGenerator\<object, any, unknown>
An async generator yielding stream parts.
data¶
data:
any
event¶
event:
StreamEvent
Defined in¶
list()¶
list(
threadId,options?):Promise\<Run[]>
List all runs for a thread.
Parameters¶
• threadId: string
The ID of the thread.
• options?
Filtering and pagination options.
• options.limit?: number
Maximum number of runs to return. Defaults to 10
• options.offset?: number
Offset to start from. Defaults to 0.
Returns¶
Promise\<Run[]>
List of runs.
Defined in¶
stream()¶
Create a run and stream the results.
Param¶
The ID of the thread.
Param¶
Assistant ID to use for this run.
Param¶
Payload for creating a run.
stream(threadId, assistantId, payload)¶
stream(
threadId,assistantId,payload?):AsyncGenerator\<object,any,unknown>
Create a run and stream the results.
Parameters¶
• threadId: null
• assistantId: string
• payload?: Omit\<RunsStreamPayload, "multitaskStrategy" | "onCompletion">
Returns¶
AsyncGenerator\<object, any, unknown>
# data¶
data:
any
# event¶
event:
StreamEvent
Defined in¶
stream(threadId, assistantId, payload)¶
stream(
threadId,assistantId,payload?):AsyncGenerator\<object,any,unknown>
Create a run and stream the results.
Parameters¶
• threadId: string
• assistantId: string
• payload?: RunsStreamPayload
Returns¶
AsyncGenerator\<object, any, unknown>
# data¶
data:
any
# event¶
event:
StreamEvent
Defined in¶
wait()¶
Create a run and wait for it to complete.
Param¶
The ID of the thread.
Param¶
Assistant ID to use for this run.
Param¶
Payload for creating a run.
wait(threadId, assistantId, payload)¶
wait(
threadId,assistantId,payload?):Promise\<DefaultValues>
Create a run and wait for it to complete.
Parameters¶
• threadId: null
• assistantId: string
• payload?: Omit\<RunsWaitPayload, "multitaskStrategy" | "onCompletion">
Returns¶
Promise\<DefaultValues>
Defined in¶
wait(threadId, assistantId, payload)¶
wait(
threadId,assistantId,payload?):Promise\<DefaultValues>
Create a run and wait for it to complete.
Parameters¶
• threadId: string
• assistantId: string
• payload?: RunsWaitPayload
Returns¶
Promise\<DefaultValues>
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / StoreClient
Class: StoreClient¶
Extends¶
BaseClient
Constructors¶
new StoreClient()¶
new StoreClient(
config?):StoreClient
Parameters¶
• config?: ClientConfig
Returns¶
Inherited from¶
BaseClient.constructor
Defined in¶
Methods¶
deleteItem()¶
deleteItem(
namespace,key):Promise\<void>
Delete an item.
Parameters¶
• namespace: string[]
A list of strings representing the namespace path.
• key: string
The unique identifier for the item.
Returns¶
Promise\<void>
Promise
Defined in¶
getItem()¶
getItem(
namespace,key):Promise\<null|Item>
Retrieve a single item.
Parameters¶
• namespace: string[]
A list of strings representing the namespace path.
• key: string
The unique identifier for the item.
Returns¶
Promise\<null | Item>
Promise
Defined in¶
listNamespaces()¶
listNamespaces(
options?):Promise\<ListNamespaceResponse>
List namespaces with optional match conditions.
Parameters¶
• options?
• options.limit?: number
Maximum number of namespaces to return (default is 100).
• options.maxDepth?: number
Optional integer specifying the maximum depth of namespaces to return.
• options.offset?: number
Number of namespaces to skip before returning results (default is 0).
• options.prefix?: string[]
Optional list of strings representing the prefix to filter namespaces.
• options.suffix?: string[]
Optional list of strings representing the suffix to filter namespaces.
Returns¶
Promise\<ListNamespaceResponse>
Promise
Defined in¶
putItem()¶
putItem(
namespace,key,value):Promise\<void>
Store or update an item.
Parameters¶
• namespace: string[]
A list of strings representing the namespace path.
• key: string
The unique identifier for the item within the namespace.
• value: Record\<string, any>
A dictionary containing the item's data.
Returns¶
Promise\<void>
Promise
Defined in¶
searchItems()¶
searchItems(
namespacePrefix,options?):Promise\<SearchItemsResponse>
Search for items within a namespace prefix.
Parameters¶
• namespacePrefix: string[]
List of strings representing the namespace prefix.
• options?
• options.filter?: Record\<string, any>
Optional dictionary of key-value pairs to filter results.
• options.limit?: number
Maximum number of items to return (default is 10).
• options.offset?: number
Number of items to skip before returning results (default is 0).
Returns¶
Promise\<SearchItemsResponse>
Promise
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / ThreadsClient
Class: ThreadsClient¶
Extends¶
BaseClient
Constructors¶
new ThreadsClient()¶
new ThreadsClient(
config?):ThreadsClient
Parameters¶
• config?: ClientConfig
Returns¶
Inherited from¶
BaseClient.constructor
Defined in¶
Methods¶
copy()¶
copy(
threadId):Promise\<Thread\<DefaultValues>>
Copy an existing thread
Parameters¶
• threadId: string
ID of the thread to be copied
Returns¶
Promise\<Thread\<DefaultValues>>
Newly copied thread
Defined in¶
create()¶
create(
payload?):Promise\<Thread\<DefaultValues>>
Create a new thread.
Parameters¶
• payload?
Payload for creating a thread.
• payload.ifExists?: OnConflictBehavior
• payload.metadata?: Metadata
Metadata for the thread.
• payload.threadId?: string
Returns¶
Promise\<Thread\<DefaultValues>>
The created thread.
Defined in¶
delete()¶
delete(
threadId):Promise\<void>
Delete a thread.
Parameters¶
• threadId: string
ID of the thread.
Returns¶
Promise\<void>
Defined in¶
get()¶
get(
threadId):Promise\<Thread\<DefaultValues>>
Get a thread by ID.
Parameters¶
• threadId: string
ID of the thread.
Returns¶
Promise\<Thread\<DefaultValues>>
The thread.
Defined in¶
getHistory()¶
getHistory\<
ValuesType>(threadId,options?):Promise\<ThreadState\<ValuesType>[]>
Get all past states for a thread.
Type Parameters¶
• ValuesType = DefaultValues
Parameters¶
• threadId: string
ID of the thread.
• options?
Additional options.
• options.before?: Config
• options.checkpoint?: Partial\<Omit\<Checkpoint, "thread_id">>
• options.limit?: number
• options.metadata?: Metadata
Returns¶
Promise\<ThreadState\<ValuesType>[]>
List of thread states.
Defined in¶
getState()¶
getState\<
ValuesType>(threadId,checkpoint?,options?):Promise\<ThreadState\<ValuesType>>
Get state for a thread.
Type Parameters¶
• ValuesType = DefaultValues
Parameters¶
• threadId: string
ID of the thread.
• checkpoint?: string | Checkpoint
• options?
• options.subgraphs?: boolean
Returns¶
Promise\<ThreadState\<ValuesType>>
Thread state.
Defined in¶
patchState()¶
patchState(
threadIdOrConfig,metadata):Promise\<void>
Patch the metadata of a thread.
Parameters¶
• threadIdOrConfig: string | Config
Thread ID or config to patch the state of.
• metadata: Metadata
Metadata to patch the state with.
Returns¶
Promise\<void>
Defined in¶
search()¶
search(
query?):Promise\<Thread\<DefaultValues>[]>
List threads
Parameters¶
• query?
Query options
• query.limit?: number
Maximum number of threads to return. Defaults to 10
• query.metadata?: Metadata
Metadata to filter threads by.
• query.offset?: number
Offset to start from.
• query.status?: ThreadStatus
Thread status to filter on. Must be one of 'idle', 'busy', 'interrupted' or 'error'.
Returns¶
Promise\<Thread\<DefaultValues>[]>
List of threads
Defined in¶
update()¶
update(
threadId,payload?):Promise\<Thread\<DefaultValues>>
Update a thread.
Parameters¶
• threadId: string
ID of the thread.
• payload?
Payload for updating the thread.
• payload.metadata?: Metadata
Metadata for the thread.
Returns¶
Promise\<Thread\<DefaultValues>>
The updated thread.
Defined in¶
updateState()¶
updateState\<
ValuesType>(threadId,options):Promise\<Pick\<Config,"configurable">>
Add state to a thread.
Type Parameters¶
• ValuesType = DefaultValues
Parameters¶
• threadId: string
The ID of the thread.
• options
• options.asNode?: string
• options.checkpoint?: Checkpoint
• options.checkpointId?: string
• options.values: ValuesType
Returns¶
Promise\<Pick\<Config, "configurable">>
Defined in¶
@langchain/langgraph-sdk • Docs
@langchain/langgraph-sdk / getApiKey
Function: getApiKey()¶
getApiKey(
apiKey?):string|undefined
Get the API key from the environment. Precedence: 1. explicit argument 2. LANGGRAPH_API_KEY 3. LANGSMITH_API_KEY 4. LANGCHAIN_API_KEY
Parameters¶
• apiKey?: string
Optional API key provided as an argument
Returns¶
string | undefined
The API key if found, otherwise undefined