middleware changedcli-sdks-libraries/middleware
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2222 - claude-opus-4-5-20251101
2323 - claude-sonnet-4-5-20250929
2424 supportedPlatforms:
25 Claude API: ga
26 Claude Platform on AWS: ga
27 Amazon Bedrock: ga
28 Amazon Bedrock (InvokeModel): ga
29 Claude Models on Google Cloud (Google managed): ga
30 Microsoft Foundry: ga
25 Claude API: stable
26 Claude Platform on AWS: stable
27 Amazon Bedrock: stable
28 Amazon Bedrock (InvokeModel): stable
29 Claude Models on Google Cloud (Google managed): stable
30 Microsoft Foundry: stable
3131---
3232
3333The Claude SDK provides a middleware (or interceptor) hook that lets you run code before a request is sent and after the response is received. Use middleware for cross-cutting concerns such as logging, custom retries, request annotation, and refusal fallback handling.
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