langchain.js
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    Interface BaseCallbackConfig

    interface BaseCallbackConfig {
        callbacks?: Callbacks;
        metadata?: Record<string, unknown>;
        runId?: string;
        runName?: string;
        tags?: string[];
    }

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    Properties

    callbacks? metadata? runId? runName? tags?

    Properties

    callbacks?: Callbacks

    Callbacks for this call and any sub-calls (eg. a Chain calling an LLM). Tags are passed to all callbacks, metadata is passed to handle*Start callbacks.

    metadata?: Record<string, unknown>

    Metadata for this call and any sub-calls (eg. a Chain calling an LLM). Keys should be strings, values should be JSON-serializable.

    runId?: string

    Unique identifier for the tracer run for this call. If not provided, a new UUID will be generated.

    runName?: string

    Name for the tracer run for this call. Defaults to the name of the class.

    tags?: string[]

    Tags for this call and any sub-calls (eg. a Chain calling an LLM). You can use these to filter calls.

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