Defined in: [src/models/bedrock.ts:328](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L328) Options for creating a BedrockModel instance. ## Extends - [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md) ## Properties ### maxTokens? ```ts optional maxTokens?: number; ``` Defined in: [src/models/bedrock.ts:245](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L245) Maximum number of tokens to generate in the response. #### See [https://docs.aws.amazon.com/bedrock/latest/APIReference/API\_runtime\_InferenceConfiguration.html](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_InferenceConfiguration.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`maxTokens`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#maxtokens) --- ### temperature? ```ts optional temperature?: number; ``` Defined in: [src/models/bedrock.ts:252](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L252) Controls randomness in generation. #### See [https://docs.aws.amazon.com/bedrock/latest/APIReference/API\_runtime\_InferenceConfiguration.html](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_InferenceConfiguration.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`temperature`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#temperature) --- ### topP? ```ts optional topP?: number; ``` Defined in: [src/models/bedrock.ts:259](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L259) Controls diversity via nucleus sampling. #### See [https://docs.aws.amazon.com/bedrock/latest/APIReference/API\_runtime\_InferenceConfiguration.html](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_InferenceConfiguration.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`topP`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#topp) --- ### stopSequences? ```ts optional stopSequences?: string[]; ``` Defined in: [src/models/bedrock.ts:264](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L264) Array of sequences that will stop generation when encountered. #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`stopSequences`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#stopsequences) --- ### cacheConfig? ```ts optional cacheConfig?: BedrockCacheConfig; ``` Defined in: [src/models/bedrock.ts:271](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L271) Configuration for prompt caching. #### See [https://docs.aws.amazon.com/bedrock/latest/userguide/prompt-caching.html](https://docs.aws.amazon.com/bedrock/latest/userguide/prompt-caching.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`cacheConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#cacheconfig) --- ### additionalRequestFields? ```ts optional additionalRequestFields?: JSONValue; ``` Defined in: [src/models/bedrock.ts:276](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L276) Additional fields to include in the Bedrock request. #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`additionalRequestFields`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#additionalrequestfields) --- ### additionalResponseFieldPaths? ```ts optional additionalResponseFieldPaths?: string[]; ``` Defined in: [src/models/bedrock.ts:281](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L281) Additional response field paths to extract from the Bedrock response. #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`additionalResponseFieldPaths`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#additionalresponsefieldpaths) --- ### additionalArgs? ```ts optional additionalArgs?: JSONValue; ``` Defined in: [src/models/bedrock.ts:287](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L287) Additional arguments to pass through to the Bedrock Converse API. #### See [https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/bedrock-runtime/command/ConverseStreamCommand/](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/bedrock-runtime/command/ConverseStreamCommand/) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`additionalArgs`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#additionalargs) --- ### stream? ```ts optional stream?: boolean; ``` Defined in: [src/models/bedrock.ts:297](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L297) Whether or not to stream responses from the model. This will use the ConverseStream API instead of the Converse API. #### See - [https://docs.aws.amazon.com/bedrock/latest/APIReference/API\_runtime\_Converse.html](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_Converse.html) - [https://docs.aws.amazon.com/bedrock/latest/APIReference/API\_runtime\_ConverseStream.html](https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_ConverseStream.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`stream`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#stream) --- ### includeToolResultStatus? ```ts optional includeToolResultStatus?: boolean | "auto"; ``` Defined in: [src/models/bedrock.ts:305](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L305) Flag to include status field in tool results. - `true`: Always include status field - `false`: Never include status field - `'auto'`: Automatically determine based on model ID (default) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`includeToolResultStatus`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#includetoolresultstatus) --- ### guardrailConfig? ```ts optional guardrailConfig?: BedrockGuardrailConfig; ``` Defined in: [src/models/bedrock.ts:311](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L311) Guardrail configuration for content filtering and safety controls. #### See [https://docs.aws.amazon.com/bedrock/latest/userguide/guardrails.html](https://docs.aws.amazon.com/bedrock/latest/userguide/guardrails.html) #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`guardrailConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#guardrailconfig) --- ### useNativeTokenCount? ```ts optional useNativeTokenCount?: boolean; ``` Defined in: [src/models/bedrock.ts:322](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L322) Whether to use the native Bedrock CountTokens API. When `true`, `countTokens()` calls the Bedrock CountTokens API for accurate counts. When `false` or not set (default), skips the API call and uses the character-based heuristic estimator. #### Default Value ```ts false ``` #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`useNativeTokenCount`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#usenativetokencount) --- ### region? ```ts optional region?: string; ``` Defined in: [src/models/bedrock.ts:332](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L332) AWS region to use for the Bedrock service. --- ### clientConfig? ```ts optional clientConfig?: BedrockRuntimeClientConfig; ``` Defined in: [src/models/bedrock.ts:337](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L337) Configuration for the Bedrock Runtime client. --- ### apiKey? ```ts optional apiKey?: string; ``` Defined in: [src/models/bedrock.ts:344](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/bedrock.ts#L344) Amazon Bedrock API key for bearer token authentication. When provided, requests use the API key instead of SigV4 signing. #### See [https://docs.aws.amazon.com/bedrock/latest/userguide/api-keys.html](https://docs.aws.amazon.com/bedrock/latest/userguide/api-keys.html) --- ### modelId? ```ts optional modelId?: string; ``` Defined in: [src/models/model.ts:92](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/model.ts#L92) The model identifier. This typically specifies which model to use from the provider’s catalog. #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`modelId`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#modelid) --- ### contextWindowLimit? ```ts optional contextWindowLimit?: number; ``` Defined in: [src/models/model.ts:125](https://github.com/strands-agents/harness-sdk/blob/576da59fdc411b55036a7cf66d4e1659a67d4d0d/strands-ts/src/models/model.ts#L125) Maximum context window size in tokens for the model. This value represents the total token capacity shared between input and output. When not provided, it is automatically resolved from a built-in lookup table based on the configured model ID. An explicit value always takes precedence. When `modelId` is changed via `updateConfig()`, this value is automatically re-resolved if it was initially auto-populated. Explicitly set values are preserved. #### Inherited from [`BedrockModelConfig`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md).[`contextWindowLimit`](/pr-cms-3708/docs/api/typescript/BedrockModelConfig/index.md#contextwindowlimit)