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Showing content from https://langchain-ai.github.io/langgraphjs/reference/classes/langgraph_prebuilt.ToolNode.html below:

ToolNode | API Reference

• T = any

• RunnableCallable<T, T>
  • ToolNode

• Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:130

• new ToolNode<T>(tools, options?): ToolNode<T>
• Type Parameters
  • T = any
  Parameters
  • tools: (StructuredToolInterface<ToolInputSchemaBase, any, any> | RunnableToolLike<InteropZodType, unknown> | DynamicTool<any>)[]
  • Optional options: ToolNodeOptions
  Returns ToolNode<T>

  Overrides RunnableCallable<T, T>.constructor

  • Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:134

config?: RunnableConfig<Record<string, any>>

Inherited from RunnableCallable.config

• Defined in libs/langgraph/dist/utils.d.ts:14

func: ((...args) => any)

• • (...args): any
  • Parameters
    • Rest ...args: any[]
    Returns any

Inherited from RunnableCallable.func

• Defined in libs/langgraph/dist/utils.d.ts:12

handleToolErrors: boolean

• Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:132

lc_kwargs: SerializedFields

Inherited from RunnableCallable.lc_kwargs

• Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:27

lc_namespace: string[]

Inherited from RunnableCallable.lc_namespace

• Defined in libs/langgraph/dist/utils.d.ts:11

lc_runnable: boolean

Inherited from RunnableCallable.lc_runnable

• Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:25

lc_serializable: boolean

Inherited from RunnableCallable.lc_serializable

• Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:26

name?: string

Inherited from RunnableCallable.name

• Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:26

recurse: boolean

Inherited from RunnableCallable.recurse

• Defined in libs/langgraph/dist/utils.d.ts:16

tags?: string[]

Inherited from RunnableCallable.tags

• Defined in libs/langgraph/dist/utils.d.ts:13

tools: (StructuredToolInterface<ToolInputSchemaBase, any, any> | RunnableToolLike<InteropZodType, unknown> | DynamicTool<any>)[]

• Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:131

trace: boolean

Overrides RunnableCallable.trace

• Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:133

• get lc_aliases(): undefined | {
      [key: string]: string;
  }
• Returns undefined | {
      [key: string]: string;
  }

  Inherited from RunnableCallable.lc_aliases

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:65

• get lc_attributes(): undefined | SerializedFields
• Returns undefined | SerializedFields

  Inherited from RunnableCallable.lc_attributes

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:58

• get lc_id(): string[]
• Returns string[]

  Inherited from RunnableCallable.lc_id

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:43

• get lc_secrets(): undefined | {
      [key: string]: string;
  }
• Returns undefined | {
      [key: string]: string;
  }

  Inherited from RunnableCallable.lc_secrets

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:49

• get lc_serializable_keys(): undefined | string[]
• Returns undefined | string[]

  Inherited from RunnableCallable.lc_serializable_keys

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:72

• _batchWithConfig<T>(func, inputs, options?, batchOptions?): Promise<(Error | T)[]>
• Type Parameters
  • T
  Parameters
  • func: ((inputs, options?, runManagers?, batchOptions?) => Promise<(Error | T)[]>)
    • • (inputs, options?, runManagers?, batchOptions?): Promise<(Error | T)[]>
      • Parameters
        • inputs: T[]
        • Optional options: Partial<RunnableConfig<Record<string, any>>>[]
        • Optional runManagers: (undefined | CallbackManagerForChainRun)[]
        • Optional batchOptions: RunnableBatchOptions
        Returns Promise<(Error | T)[]>
  • inputs: T[]
  • Optional options: Partial<RunnableConfig<Record<string, any>> & {
        runType?: string;
    }> | Partial<RunnableConfig<Record<string, any>> & {
        runType?: string;
    }>[]
  • Optional batchOptions: RunnableBatchOptions
  Returns Promise<(Error | T)[]>

  A promise that resolves to the output values.

  Inherited from RunnableCallable._batchWithConfig

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:114

• _callWithConfig<T>(func, input, options?): Promise<T>
• Type Parameters
  • T
  Parameters
  • func: ((input) => Promise<T>) | ((input, config?, runManager?) => Promise<T>)
  • input: T
  • Optional options: Partial<RunnableConfig<Record<string, any>>> & {
        runType?: string;
    }
  Returns Promise<T>

  Inherited from RunnableCallable._callWithConfig

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:102

• _getOptionsList<O>(options, length?): Partial<O>[]
• Type Parameters
  • O extends RunnableConfig<Record<string, any>> & {
        runType?: string;
    }
  Parameters
  • options: Partial<O> | Partial<O>[]
  • Optional length: number
  Returns Partial<O>[]

  Inherited from RunnableCallable._getOptionsList

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:69

• _separateRunnableConfigFromCallOptions(options?): [RunnableConfig<Record<string, any>>, Omit<Partial<RunnableConfig<Record<string, any>>>, keyof RunnableConfig<Record<string, any>>>]
• Parameters
  • Optional options: Partial<RunnableConfig<Record<string, any>>>
  Returns [RunnableConfig<Record<string, any>>, Omit<Partial<RunnableConfig<Record<string, any>>>, keyof RunnableConfig<Record<string, any>>>]

  Inherited from RunnableCallable._separateRunnableConfigFromCallOptions

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:101

• _streamIterator(input, options?): AsyncGenerator<T, any, any>
• Parameters
  • input: T
  • Optional options: Partial<RunnableConfig<Record<string, any>>>
  Returns AsyncGenerator<T, any, any>

  Inherited from RunnableCallable._streamIterator

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:93

• _streamLog(input, logStreamCallbackHandler, config): AsyncGenerator<RunLogPatch, any, any>
• Parameters
  • input: T
  • logStreamCallbackHandler: LogStreamCallbackHandler
  • config: Partial<RunnableConfig<Record<string, any>>>
  Returns AsyncGenerator<RunLogPatch, any, any>

  Inherited from RunnableCallable._streamLog

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:163

• _tracedInvoke(input, config?, runManager?): Promise<T>
• Parameters
  • input: T
  • Optional config: Partial<RunnableConfig<Record<string, any>>>
  • Optional runManager: CallbackManagerForChainRun
  Returns Promise<T>

  Inherited from RunnableCallable._tracedInvoke

  • Defined in libs/langgraph/dist/utils.d.ts:18

• _transformStreamWithConfig<I, O>(inputGenerator, transformer, options?): AsyncGenerator<O, any, any>
• Type Parameters
  • I
  • O
  Parameters
  • inputGenerator: AsyncGenerator<I, any, any>
  • transformer: ((generator, runManager?, options?) => AsyncGenerator<O, any, any>)
    • • (generator, runManager?, options?): AsyncGenerator<O, any, any>
      • Parameters
        • generator: AsyncGenerator<I, any, any>
        • Optional runManager: CallbackManagerForChainRun
        • Optional options: Partial<RunnableConfig<Record<string, any>>>
        Returns AsyncGenerator<O, any, any>
  • Optional options: Partial<RunnableConfig<Record<string, any>>> & {
        runType?: string;
    }
  Returns AsyncGenerator<O, any, any>

  Inherited from RunnableCallable._transformStreamWithConfig

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:124

• asTool<T>(fields): RunnableToolLike<InteropZodType<ToolCall | T>, T>
• Type Parameters
  • T = T
  Parameters
  • fields: {
        description?: string;
        name?: string;
        schema: InteropZodType<T>;
    }
    • Optional description?: string
    • Optional name?: string
    • schema: InteropZodType<T>
  Returns RunnableToolLike<InteropZodType<ToolCall | T>, T>

  An instance of RunnableToolLike which is a runnable that can be used as a tool.

  Inherited from RunnableCallable.asTool

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:310

• assign(mapping): Runnable<any, any, RunnableConfig<Record<string, any>>>
• Parameters
  • mapping: RunnableMapLike<Record<string, unknown>, Record<string, unknown>>
  Returns Runnable<any, any, RunnableConfig<Record<string, any>>>

  Inherited from RunnableCallable.assign

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:142

• batch(inputs, options?, batchOptions?): Promise<T[]>
• Parameters
  • inputs: T[]
  • Optional options: Partial<RunnableConfig<Record<string, any>>> | Partial<RunnableConfig<Record<string, any>>>[]
  • Optional batchOptions: RunnableBatchOptions & {
        returnExceptions?: false;
    }
  Returns Promise<T[]>

  An array of RunOutputs, or mixed RunOutputs and errors if batchOptions.returnExceptions is set

  Inherited from RunnableCallable.batch

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:80
• batch(inputs, options?, batchOptions?): Promise<(Error | T)[]>
• Parameters
  • inputs: T[]
  • Optional options: Partial<RunnableConfig<Record<string, any>>> | Partial<RunnableConfig<Record<string, any>>>[]
  • Optional batchOptions: RunnableBatchOptions & {
        returnExceptions: true;
    }
  Returns Promise<(Error | T)[]>

  Inherited from RunnableCallable.batch

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:83
• batch(inputs, options?, batchOptions?): Promise<(Error | T)[]>
• Parameters
  • inputs: T[]
  • Optional options: Partial<RunnableConfig<Record<string, any>>> | Partial<RunnableConfig<Record<string, any>>>[]
  • Optional batchOptions: RunnableBatchOptions
  Returns Promise<(Error | T)[]>

  Inherited from RunnableCallable.batch

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:86

• bind(kwargs): Runnable<T, T, RunnableConfig<Record<string, any>>>
• Parameters
  • kwargs: Partial<RunnableConfig<Record<string, any>>>
  Returns Runnable<T, T, RunnableConfig<Record<string, any>>>

  A new RunnableBinding that, when invoked, will apply the bound args.

  Inherited from RunnableCallable.bind

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:36

• getGraph(_?): Graph
• Parameters
  • Optional _: RunnableConfig<Record<string, any>>
  Returns Graph

  Inherited from RunnableCallable.getGraph

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:127

• getName(suffix?): string
• Parameters
  • Optional suffix: string
  Returns string

  Inherited from RunnableCallable.getName

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:27

• invoke(input, options?): Promise<T>
• Parameters
  • input: T
  • Optional options: Partial<RunnableConfig<Record<string, any>>>
  Returns Promise<T>

  Inherited from RunnableCallable.invoke

  • Defined in libs/langgraph/dist/utils.d.ts:19

• map(): Runnable<T[], T[], RunnableConfig<Record<string, any>>>
• Returns Runnable<T[], T[], RunnableConfig<Record<string, any>>>

  Inherited from RunnableCallable.map

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:43

• pick(keys): Runnable<any, any, RunnableConfig<Record<string, any>>>
• Parameters
  • keys: string | string[]
  Returns Runnable<any, any, RunnableConfig<Record<string, any>>>

  Inherited from RunnableCallable.pick

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:138

• pipe<NewRunOutput>(coerceable): Runnable<T, Exclude<NewRunOutput, Error>, RunnableConfig<Record<string, any>>>
• Type Parameters
  • NewRunOutput
  Parameters
  • coerceable: RunnableLike<T, NewRunOutput, RunnableConfig<Record<string, any>>>
  Returns Runnable<T, Exclude<NewRunOutput, Error>, RunnableConfig<Record<string, any>>>

  A new runnable sequence.

  Inherited from RunnableCallable.pipe

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:134

• run(input, config): Promise<T>
• Parameters
  • input: unknown
  • config: RunnableConfig<Record<string, any>>
  Returns Promise<T>
  • Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:136

• runTool(call, config): Promise<ToolMessage | Command<unknown, Record<string, unknown>, string>>
• Parameters
  • call: ToolCall
  • config: RunnableConfig<Record<string, any>>
  Returns Promise<ToolMessage | Command<unknown, Record<string, unknown>, string>>
  • Defined in libs/langgraph/dist/prebuilt/tool_node.d.ts:135

• stream(input, options?): Promise<IterableReadableStream<T>>
• Parameters
  • input: T
  • Optional options: Partial<RunnableConfig<Record<string, any>>>
  Returns Promise<IterableReadableStream<T>>

  A readable stream that is also an iterable.

  Inherited from RunnableCallable.stream

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:100

• streamEvents(input, options, streamOptions?): IterableReadableStream<StreamEvent>
• Parameters
  • input: T
  • options: Partial<RunnableConfig<Record<string, any>>> & {
        version: "v1" | "v2";
    }
  • Optional streamOptions: Omit<EventStreamCallbackHandlerInput, "autoClose">
  Returns IterableReadableStream<StreamEvent>

  Inherited from RunnableCallable.streamEvents

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:272
• streamEvents(input, options, streamOptions?): IterableReadableStream<Uint8Array<ArrayBufferLike>>
• Parameters
  • input: T
  • options: Partial<RunnableConfig<Record<string, any>>> & {
        encoding: "text/event-stream";
        version: "v1" | "v2";
    }
  • Optional streamOptions: Omit<EventStreamCallbackHandlerInput, "autoClose">
  Returns IterableReadableStream<Uint8Array<ArrayBufferLike>>

  Inherited from RunnableCallable.streamEvents

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:275

• streamLog(input, options?, streamOptions?): AsyncGenerator<RunLogPatch, any, any>
• Parameters
  • input: T
  • Optional options: Partial<RunnableConfig<Record<string, any>>>
  • Optional streamOptions: Omit<LogStreamCallbackHandlerInput, "autoClose">
  Returns AsyncGenerator<RunLogPatch, any, any>

  Inherited from RunnableCallable.streamLog

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:162

• toJSON(): Serialized
• Returns Serialized

  Inherited from RunnableCallable.toJSON

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:74

• toJSONNotImplemented(): SerializedNotImplemented
• Returns SerializedNotImplemented

  Inherited from RunnableCallable.toJSONNotImplemented

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:75

• transform(generator, options): AsyncGenerator<T, any, any>
• Parameters
  • generator: AsyncGenerator<T, any, any>
  • options: Partial<RunnableConfig<Record<string, any>>>
  Returns AsyncGenerator<T, any, any>

  Inherited from RunnableCallable.transform

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:150

• withConfig(config): Runnable<T, T, RunnableConfig<Record<string, any>>>
• Parameters
  • config: Partial<RunnableConfig<Record<string, any>>>
  Returns Runnable<T, T, RunnableConfig<Record<string, any>>>

  A new RunnableBinding with a config matching what's passed.

  Inherited from RunnableCallable.withConfig

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:59

• withFallbacks(fields): RunnableWithFallbacks<T, T>
• Parameters
  • fields: {
        fallbacks: Runnable<T, T, RunnableConfig<Record<string, any>>>[];
    } | Runnable<T, T, RunnableConfig<Record<string, any>>>[]
  Returns RunnableWithFallbacks<T, T>

  A new RunnableWithFallbacks.

  Inherited from RunnableCallable.withFallbacks

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:66

• withListeners(params): Runnable<T, T, RunnableConfig<Record<string, any>>>
• Parameters
  • params: {
        onEnd?: ((run, config?) => void | Promise<void>);
        onError?: ((run, config?) => void | Promise<void>);
        onStart?: ((run, config?) => void | Promise<void>);
    }
    • Optional onEnd?: ((run, config?) => void | Promise<void>)
      • • (run, config?): void | Promise<void>
        • Parameters
          • run: Run
          • Optional config: RunnableConfig<Record<string, any>>
          Returns void | Promise<void>
    • Optional onError?: ((run, config?) => void | Promise<void>)
      • • (run, config?): void | Promise<void>
        • Parameters
          • run: Run
          • Optional config: RunnableConfig<Record<string, any>>
          Returns void | Promise<void>
    • Optional onStart?: ((run, config?) => void | Promise<void>)
      • • (run, config?): void | Promise<void>
        • Parameters
          • run: Run
          • Optional config: RunnableConfig<Record<string, any>>
          Returns void | Promise<void>
  Returns Runnable<T, T, RunnableConfig<Record<string, any>>>

  Inherited from RunnableCallable.withListeners

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:293

• withRetry(fields?): RunnableRetry<T, T, RunnableConfig<Record<string, any>>>
• Parameters
  • Optional fields: {
        onFailedAttempt?: RunnableRetryFailedAttemptHandler;
        stopAfterAttempt?: number;
    }
    • Optional onFailedAttempt?: RunnableRetryFailedAttemptHandler
    • Optional stopAfterAttempt?: number
  Returns RunnableRetry<T, T, RunnableConfig<Record<string, any>>>

  A new RunnableRetry that, when invoked, will retry according to the parameters.

  Inherited from RunnableCallable.withRetry

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:50

• isRunnable(thing): thing is Runnable<any, any, RunnableConfig<Record<string, any>>>
• Returns thing is Runnable<any, any, RunnableConfig<Record<string, any>>>

  Inherited from RunnableCallable.isRunnable

  • Defined in node_modules/@langchain/core/dist/runnables/base.d.ts:281

• lc_name(): string
• Returns string

  Inherited from RunnableCallable.lc_name

  • Defined in node_modules/@langchain/core/dist/load/serializable.d.ts:39

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