SDKs

Generate
handwritten SDKs

Turn your OpenAPI spec into production-ready, idiomatic SDKs across multiple languages. Built for internal and external APIs alike, every SDK is type-safe, customizable, and ready to drop into your existing workflow.
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SDKs your team will be proud of

Upload your OpenAPI spec and generate production-ready, type-safe SDKs in your team's preferred languages. Speakeasy's SDK Generator handles everything from OAuth 2.0 and custom logic to retries, pagination, and full documentation.

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index.ts

Generation workflow

APIs change fast.
Your SDKs should too.

1

Upload your OpenAPI

Start with your OpenAPI specification. Speakeasy validates your spec and prepares it for SDK generation across multiple languages.

openapi.yaml

2

Pick a language

Generate SDKs in TypeScript, Python, Go, Java, C#, PHP, and more. Each SDK is idiomatic and follows language-specific best practices.

index.ts

3

Customize with guardrails

Use overlays and hooks to modify SDK functionality, structure, and behavior without altering the core generation process.

Pull Request #127
Openfeat(sdk): add streaming support

speakeasy-bot wants to merge 4 commits into main

src/sdk/chat.ts+24-8
export class ChatClient {
- async create(req: ChatRequest): Promise<ChatResponse> {
+ async create(req: ChatRequest, options?: StreamOptions) {
+ if (options?.stream) {
+ return this.createStream(req);
+ }
return this.client.post('/chat/completions', req);
}

4

Ship with every commit

Incorporate SDK generation into your CI/CD workflows. Every API change automatically triggers SDK updates as pull requests.

Actions
Generate SDKs

Workflow run #127 queued

Validate OpenAPI spec
Generate TypeScript SDK
Generate Python SDK
Run SDK tests
Create pull request

5

Publish with confidence

Easily publish your SDKs to popular package managers like npm, PyPI, Maven, and more to facilitate distribution and adoption.

npm

@acme/ai-sdk

TypeScript SDK for the Acme AI API

v3.2.0
Published 2 hours ago48k weekly downloads

"We are very happy with Speakeasy's support… Internally, our developers find the SDK useful, it's actively used, and continues to generate valuable feedback. The Speakeasy team has been instrumental throughout our implementation journey."

Gaspard Blanchet

SOFTWARE ENGINEER @ MISTRAL AI

"We've been using Speakeasy to create Dub.co's TypeScript SDK and it's been an amazing experience so far."

Steven Tey

FOUNDER & CEO @ DUB

"Automating our SDK production with Speakeasy allows us to cost-effectively cover our customers' language requirements and ease their integration cost quite a bit."

Suresh Ramachandran

SR. DIRECTOR OF ENGINEERING @ APEX FINTECH SOLUTIONS

"Speakeasy has been a really good partner for us. We've been able to get support quickly when needed, and the platform has significantly streamlined our SDK generation process. It's allowed our internal teams to integrate with our services much faster, and our customers benefit from a smoother, more efficient onboarding experience."

Joseph Spurrier

SR. STAFF ENGINEER @ PROVE

From manual to maintainable

Speakeasy SDK Generation turns your OpenAPI spec into reliable, maintainable SDKs that scale with your team. No boilerplate. No manual upkeep.

Manual SDK creation and updates
Inconsistent SDK quality across languages
Time-consuming integration processes
Limited or outdated documentation

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