Dev.to
7/15/2026

The original title is: "mock-cli: A Rust-based OpenAPI mock server with dynamic fake data and millisecond cold starts"
Original: I built a blazing-fast OpenAPI mock server in Rust — starts in milliseconds, zero config, dynamic fake data
Short summary
mock-cli is a Rust-based OpenAPI mock server that reads any OpenAPI 3 spec and serves dynamic, schema-compliant fake data with millisecond cold starts. It supports path parameter injection, cycle-safe $ref resolution, and all HTTP methods as a single static binary with no runtime dependencies. Available via npm or GitHub Releases.
- •Rust binary reads OpenAPI 3 specs and serves dynamic schema-compliant mock data
- •Cold start in milliseconds with no Docker or runtime dependencies
- •Supports path param injection, cycle-safe refs, and correct HTTP status codes
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