OpenAPI & Swagger F# Type Provider

Strongly-typed HTTP clients from OpenAPI 3.0 and Swagger 2.0 schemas in JSON and YAML formats.

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Compile-Time Types

Types are generated at compile time directly from live or local schema files — no separate codegen step needed.

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Supports both specifications in JSON and YAML formats via Microsoft.OpenApi.

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Use in F# scripts, .NET projects, and F# Interactive — with full IntelliSense and type-checking.

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Blocks HTTP and private IP addresses by default to prevent server-side request forgery attacks.

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Every generated method accepts an optional CancellationToken for cancelling long-running requests.

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Bring your own HttpClient, DelegatingHandler, or override JSON serialization.