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Smithy

On the record

API protocols
The same service model can support REST JSON, RPC v2 CBOR, AWS JSON, and AWS Query/XML protocols.smithy.io · read 4 Oct 2026
AWS integrations
Smithy documents integrations with AWS services and tools including API Gateway, CloudFormation, and AWS SDKs.smithy.io · read 9 Oct 2026
AWS use
Smithy says it was created and is used at AWS, and that it powers AWS APIs and SDKs.smithy.io · read 4 Oct 2026
CLI
The Smithy CLI can build models, run ad hoc validation, compare models, and query models without requiring users to set up Java or Smithy Gradle Plugins.smithy.io · read 4 Oct 2026
Client languages
The site lists client SDKs for TypeScript, Python, Go, Rust, Kotlin, Swift, Java, Scala, Ruby, and Dafny.smithy.io · read 9 Oct 2026
CLI platforms
The Smithy CLI is supported on macOS for x86 and ARM, Linux for x86 and ARM, and Windows x64.smithy.io · read 9 Oct 2026
Code generation
A single Smithy model can generate type-safe clients, servers, documentation, OpenAPI, and JSON Schema.smithy.io · read 9 Oct 2026
Community and maintenance
The site says Smithy is maintained by AWS and the open-source community and links to community resources and GitHub issues.smithy.io · read 9 Oct 2026
Download verification
Smithy CLI release archives are PGP-signed and hashed, and the installation guide describes verifying their signatures and checksums.smithy.io · read 4 Oct 2026
Governance
Smithy validates model standards during smithy build and checks revisions for backward compatibility.smithy.io · read 9 Oct 2026
Integrations
Smithy build configurations can load extensions and code generators through Maven dependencies and plugins, including AWS-specific dependencies and an OpenAPI generator.smithy.io · read 4 Oct 2026
Intended users
Smithy is presented for teams defining service APIs and generating SDKs, server code, and documentation across programming languages.smithy.io · read 4 Oct 2026
License
The site identifies Smithy as open source under the Apache 2.0 license.smithy.io · read 9 Oct 2026
Modeling
Smithy supports resource-based API modeling, which can be used to generate artifacts including CloudFormation schemas, SDKs, and documentation.smithy.io · read 4 Oct 2026
Product
Smithy is an open-source, protocol-agnostic interface definition language and toolset for defining APIs and generating clients, servers, and documentation.smithy.io · read 4 Oct 2026
Protocols
Smithy describes support for REST JSON, RPC v2 CBOR, AWS JSON, and AWS Query protocols.smithy.io · read 9 Oct 2026
Purpose
Smithy is an open-source interface definition language for modeling services and SDKs.smithy.io · read 9 Oct 2026
Security
The Smithy CLI installation guide says release archives are PGP-signed and hashed, and describes verifying signatures and checksums.smithy.io · read 9 Oct 2026

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