Class Bedrock

A type of Large Language Model (LLM) that interacts with the Bedrock service. It extends the base LLM class and implements the BaseBedrockInput interface. The class is designed to authenticate and interact with the Bedrock service, which is a part of Amazon Web Services (AWS). It uses AWS credentials for authentication and can be configured with various parameters such as the model to use, the AWS region, and the maximum number of tokens to generate.

Hierarchy (view full)

Constructors

constructor

Properties

codec credentials fetchFn model region streaming endpointHost? maxTokens? modelKwargs? stopSequences? temperature?

Methods

invocationParams

Constructors

constructor

Properties

codec

codec: EventStreamCodec = ...

credentials

credentials: CredentialType

AWS Credentials. If no credentials are provided, the default credentials from @aws-sdk/credential-provider-node will be used.

fetchFn

fetchFn: {
    (input: URL | RequestInfo, init?: RequestInit): Promise<Response>;
    (input: RequestInfo, init?: RequestInit): Promise<Response>;
}

A custom fetch function for low-level access to AWS API. Defaults to fetch().

Type declaration

    • (input, init?): Promise<Response>

    • MDN Reference

      Parameters

      • input: URL | RequestInfo
      • Optionalinit: RequestInit

      Returns Promise<Response>

    • (input, init?): Promise<Response>

    • Parameters

      • input: RequestInfo
      • Optionalinit: RequestInit

      Returns Promise<Response>

model

model: string = "amazon.titan-tg1-large"

Model to use. For example, "amazon.titan-tg1-large", this is equivalent to the modelId property in the list-foundation-models api.

region

region: string

The AWS region e.g. us-west-2. Fallback to AWS_DEFAULT_REGION env variable or region specified in ~/.aws/config in case it is not provided here.

streaming

streaming: boolean = false

Whether or not to stream responses

OptionalendpointHost

endpointHost?: string

Override the default endpoint hostname.

OptionalmaxTokens

maxTokens?: number = undefined

Max tokens.

OptionalmodelKwargs

modelKwargs?: Record<string, unknown>

Additional kwargs to pass to the model.

OptionalstopSequences

stopSequences?: string[]

Deprecated

Optionaltemperature

temperature?: number = undefined

Temperature.

Methods

invocationParams

  • invocationParams(options?): {
        maxTokens: undefined | number;
        model: string;
        modelKwargs: undefined | Record<string, unknown>;
        region: string;
        stop: any;
        temperature: undefined | number;
    }

  • Parameters

    • Optionaloptions: unknown

    Returns {
        maxTokens: undefined | number;
        model: string;
        modelKwargs: undefined | Record<string, unknown>;
        region: string;
        stop: any;
        temperature: undefined | number;
    }

    • maxTokens: undefined | number
    • model: string
    • modelKwargs: undefined | Record<string, unknown>
    • region: string
    • stop: any
    • temperature: undefined | number

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