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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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java changedcli-sdks-libraries/sdks/java

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10911091The Java SDK supports the following platforms through separate dependencies that provide platform-specific `Backend` implementations:
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1093* **Agent Platform:** `com.anthropic:anthropic-java-vertex`: Use `VertexBackend.builder()` or `VertexBackend.fromEnv()`. `fromEnv()` reads `CLOUD_ML_REGION` and `ANTHROPIC_VERTEX_PROJECT_ID` and uses Application Default Credentials.
1093* **Claude Models on Google Cloud (Google managed):** `com.anthropic:anthropic-java-vertex`: Use `VertexBackend.builder()` or `VertexBackend.fromEnv()`. `fromEnv()` reads `CLOUD_ML_REGION` and `ANTHROPIC_VERTEX_PROJECT_ID` and uses Application Default Credentials.
10941094* **Bedrock:** `com.anthropic:anthropic-java-bedrock`: Use `BedrockMantleBackend.fromEnv()` or `BedrockMantleBackend.builder()` for the Messages-API Bedrock endpoint, or `BedrockBackend.fromEnv()` / `BedrockBackend.builder()` (`bedrock-runtime` path).
10951095* **Claude Platform on AWS:** `com.anthropic:anthropic-java-aws`: Use `AwsBackend.fromEnv()` (reads `ANTHROPIC_AWS_WORKSPACE_ID` and the AWS default region/credential chain) or `AwsBackend.builder()`. Available in beta.
10961096* **Foundry:** `com.anthropic:anthropic-java-foundry`: Use `FoundryBackend.fromEnv()` or `FoundryBackend.builder()`.
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