Generating API SDKs

Overview

Generate type-safe client SDKs in multiple languages (TypeScript, Python, Go, Java) from OpenAPI 3.0+ specifications. Produce idiomatic client libraries with authentication handling, automatic retries, pagination helpers, and comprehensive type definitions that mirror the API contract.

Prerequisites

• OpenAPI 3.0+ specification file (YAML or JSON) with complete schema definitions
• Target language toolchain installed (Node.js/TypeScript, Python 3.10+, Go 1.21+, or Java 17+)
• OpenAPI Generator CLI or equivalent code generation tool
• Package registry credentials for publishing (npm, PyPI, Maven Central, pkg.go.dev)
• CI pipeline for automated SDK builds on spec changes

Instructions

1. Read and validate the OpenAPI specification using Read, checking for complete schema definitions, proper $ref usage, and response type coverage across all endpoints.
2. Extract all operation IDs, request/response models, and authentication schemes from the specification to build the SDK method inventory.
3. Generate typed model classes for every schema component, including nested objects, enums, and discriminated unions with proper nullability annotations.
4. Create a client class with methods for each API operation, mapping operation IDs to idiomatic method names (e.g., listUsers, get_user, CreateUser).