GoogleVertexAnthropicProvider

Namespace: Vercel.AI.Google

public sealed class GoogleVertexAnthropicProvider : AnthropicProvider, IBatchProvider, IDecisionProvider, IEvaluationProvider

Anthropic on Vertex. Sends the Anthropic Messages body to rawPredict with anthropic_version in the body. Vertex does not accept URL sources, the native output format, or strict tools.

Inheritance: object → ProviderBase → AnthropicProvider

Implements: IBatchProvider, IDecisionProvider, IEvaluationProvider

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Constructors

GoogleVertexAnthropicProvider(HttpClient, GoogleVertexAnthropicOptions?)

public GoogleVertexAnthropicProvider(HttpClient httpClient, GoogleVertexAnthropicOptions? options = null)

Creates a provider.

Parameters

Name	Type	Description
httpClient	HttpClient
options	GoogleVertexAnthropicOptions

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Fields

ModelProviderName

public const string ModelProviderName = "googleVertex.anthropic.messages"

Provider id reported by language models.

Value: string

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Properties

BaseUrl

public string BaseUrl { get; }

Publisher base URL.

Value: string

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Location

public string? Location { get; }

Location.

Value: string

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Project

public string? Project { get; }

Project id.

Value: string

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SupportedUrls

protected override IReadOnlyDictionary<string, string> SupportedUrls { get; }

URL patterns that models of this provider accept for images and PDFs.

Value: IReadOnlyDictionary<string, string>

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SupportsNativeStructuredOutput

protected override bool SupportsNativeStructuredOutput { get; }

False when the host does not accept the native output format. Structured output then uses the JSON tool.

Value: bool

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SupportsStrictTools

protected override bool SupportsStrictTools { get; }

False when the host does not accept strict on tool definitions.

Value: bool

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Tools

public static IReadOnlyList<string> Tools { get; }

Provider tool ids that Vertex accepts. A subset of the Anthropic tools.

Value: IReadOnlyList<string>

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Methods

Create(GoogleVertexAnthropicOptions?, HttpMessageHandler?)

public static GoogleVertexAnthropicProvider Create(GoogleVertexAnthropicOptions? options = null, HttpMessageHandler? handler = null)

Creates a provider. Pass a handler from tests.

Parameters

Name	Type	Description
options	GoogleVertexAnthropicOptions
handler	HttpMessageHandler

Returns: GoogleVertexAnthropicProvider

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CreateHeadersAsync(IReadOnlyList<string>, IReadOnlyDictionary<string, string?>?, string?, CancellationToken)

public override Task<Dictionary<string, string?>> CreateHeadersAsync(IReadOnlyList<string> betas, IReadOnlyDictionary<string, string?>? callHeaders, string? body, CancellationToken cancellationToken)

Generated bearer token, then configured headers, call headers, and beta flags.

Parameters

Name	Type	Description
betas	IReadOnlyList<string>
callHeaders	IReadOnlyDictionary<string, string>
body	string
cancellationToken	CancellationToken

Returns: Task<Dictionary<string, string>>

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EmbeddingModel(string)

public override IEmbeddingModel EmbeddingModel(string modelId)

Embedding models are not available on this provider.

Parameters

Name	Type	Description
modelId	string

Returns: IEmbeddingModel

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PredictUrl(string, bool)

public string PredictUrl(string modelId, bool streaming)

rawPredict or streamRawPredict URL for a model.

Parameters

Name	Type	Description
modelId	string
streaming	bool

Returns: string

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RequestUri(string, bool)

protected override Uri RequestUri(string modelId, bool streaming)

URL for one model call. Defaults to MessagesUri().

Parameters

Name	Type	Description
modelId	string
streaming	bool

Returns: Uri

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TransformBody(JsonObject)

public static JsonObject TransformBody(JsonObject body)

Removes model and sets anthropic_version.

Parameters

Name	Type	Description
body	JsonObject

Returns: JsonObject

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TransformHeaders(Dictionary<string, string?>, IReadOnlyDictionary<string, JsonElement>?)

public static Dictionary<string, string?> TransformHeaders(Dictionary<string, string?> headers, IReadOnlyDictionary<string, JsonElement>? providerOptions)

Sends providerOptions.vertex.labels as the x-vertex-ai-labels header. An explicit header wins.

Parameters

Name	Type	Description
headers	Dictionary<string, string>
providerOptions	IReadOnlyDictionary<string, JsonElement>

Returns: Dictionary<string, string>

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