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Change Log

0.0.3 (08/21/2025)

Warning

This is a developer-preview release and may contain bugs. No guarantee is made about API stability. This release is not recommended for production use!

Features

  • Added Model Context Protocol (MCP) CLI to manage MCP Servers.
  • Added Model Context Protocol (MCP) server generation from Smithy models with AWS service bundles and generic bundles.
  • Added @prompts trait to provide contextual guidance for LLMs when using Smithy services.
  • Added @tool_assistant and @install_tool prompts for enhanced AI integration.
  • Added CORS headers support for Netty server request handler.
  • Added Document support and BigDecimal/BigInteger support for RPCv2 CBOR protocol.
  • Added pretty printing support for JSON serialization.
  • Added client-config command to configure client configurations.
  • Added request-level override capabilities and call config interceptor support.
  • Added JMESPath to_number function.
  • Added dynamic tool loading and search tools support.
  • Added StdIo MCP proxy and process I/O proxy functionality.
  • Added support for customizing smithy mcp home directory.

Bug Fixes

  • Fixed empty prefix headers tests.
  • Changed generated getters to have 'get' prefix.
  • Fixed smithy-call issues.
  • Fixed Registry selection and injection.
  • Fixed missing newline in generated code.
  • Fixed cross-branch pollution bug in SchemaConverter recursion detection.
  • Fixed incorrect bitmask exposed by DeferredMemberSchema.
  • Fixed service file merging for mcp-schemas.
  • Fixed message in generated exceptions when message field has different casing.
  • Fixed bounds check when non-exact bytebuffer is passed.
  • Fixed ResourceGenerator to handle resources with more than 10 properties.
  • Fixed JSON Documents equals implementation.
  • Fixed CSV header parsing to not include quotes.
  • Fixed AWS model bundle operation filtering logic.
  • Fixed integration tests and flaky test issues.
  • Fixed README to have correct example names for lambda example.

Improvements

  • Made JAR builds reproducible.
  • Updated to build with JDK21 while targeting JDK17.
  • Added Graal metadata generation for native CLI builds.
  • Added version provider SPI and exit code telemetry.

0.0.2 (04/07/2025)

Warning

This is a developer-preview release and may contain bugs. No guarantee is made about API stability. This release is not recommended for production use!

Features

  • Added generation of root-level service-specific exceptions for clients and servers.
  • Added usage examples.
  • Added custom exceptions for ClientTransport.
  • Added lambda endpoint functionality with updated naming.
  • Consolidated Schemas into a single class.
  • Updated namespace and module naming.
  • Improved document serialization of wrapped structures.
  • Added support for service-schema access from client-side.
  • Added support for generating MCP and MCP-proxy servers

0.0.1 (02/06/2025)

Warning

This is a developer-preview release and may contain bugs. No guarantee is made about API stability. This release is not recommended for production use!

Features

  • Implemented Client, Server and Type codegen plugins.
  • Added Client event streaming support.
  • Added Client Auth support - sigv4, bearer auth, http basic auth.
  • Added JSON protocol support - restJson1, awsJson.
  • Added RPCV2 CBOR protocol support.
  • Implemented Dynamic client that can load a Smithy model to call a service.
  • Added Smithy Lambda Endpoint wrapper to run generated server stubs in AWS Lambda.