csharp changedcli-sdks-libraries/sdks/csharp
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415415 * [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock)
416416 * [Amazon Bedrock (Opus 4.6 and earlier)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy)
417417 * [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws)
418 * [Google Cloud](https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai)
418 * [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed)
419419 * [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry)
420
421 See also [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed).
420422</Note>
421423
422424The C# SDK supports the following platforms through separate NuGet packages:
423425
424* **Agent Platform:** `Anthropic.Vertex`. See [Claude on Google Cloud](https://platform.claude.com/docs/en/build-with-claude/claude-on-vertex-ai) for client setup.
426* **Agent Platform:** `Anthropic.Vertex`. See [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed) for client setup.
425427* **Bedrock:** `Anthropic.Bedrock`. Use `AnthropicBedrockMantleClient` for the Messages-API Bedrock endpoint, or `AnthropicBedrockClient` (`bedrock-runtime` path). `AnthropicBedrockMantleClient` takes an optional `MantleAwsClientOptions` config object; `AnthropicBedrockClient` accepts `AnthropicBedrockCredentialsHelper.FromEnv()` or explicit credentials.
426428* **Claude Platform on AWS:** `Anthropic.Aws`. Use `AnthropicAwsClient`; set `WorkspaceId` on the client or the `ANTHROPIC_AWS_WORKSPACE_ID` environment variable (see [Workspaces](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws#workspaces)). Available in beta.
427429* **Foundry:** `Anthropic.Foundry`. Use `AnthropicFoundryClient` with `DefaultAnthropicFoundryCredentials.FromEnv()` or explicit credentials.
428430
429431Use `AnthropicBedrockMantleClient` for new projects; `AnthropicBedrockClient` remains for existing applications using the Bedrock `InvokeModel` API.
432
433The C# SDK also supports Claude Models on Google Cloud (Anthropic managed) through `AnthropicGoogleCloudClient`, from the `Anthropic.GoogleCloud` package. This client is in beta. Set `WorkspaceId` on an optional `GoogleCloudClientOptions` value, or set the `ANTHROPIC_GOOGLE_CLOUD_WORKSPACE_ID` environment variable. See [Project, location, and workspace resolution](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed#project-location-and-workspace-resolution).
430434
431435## Semantic versioning
432436
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