API Client Generator

Purpose

Generate type-safe, idiomatic API client SDKs from OpenAPI/Swagger specifications, GraphQL schemas, or gRPC protobuf definitions. Automated client generation eliminates manual HTTP code, ensures type safety, and keeps clients synchronized with API changes.

Agent Protocol

Trigger

Exact user phrases: "generate API client", "OpenAPI client", "Swagger codegen", "API SDK generation", "client generator", "auto-generate client", "OpenAPI TypeScript", "openapi-generator", "NSwag", "kiota".

Input Context

• API specification format (OpenAPI 3.x, Swagger 2.0, GraphQL, gRPC protobuf)
• Target language/framework (TypeScript, C#, Python, Java, Go, Rust, Kotlin)
• HTTP client library (fetch, axios, HttpClient, httpx, reqwest)
• Authentication method (Bearer token, API key, OAuth2, mTLS, custom header)
• Existing API spec location (URL, file path, registry URL)
• Generation tool preferences (openapi-generator, NSwag, kiota, or custom)
• Customization needs (naming conventions, package structure, error handling)