Autarkie – Instant grammar fuzzing using Rust macros

In plain words

Autarkie is a Rust development tool that uses macros to generate grammar fuzzing instantly. It allows developers to test parsers and language implementations by automatically creating test cases based on grammar definitions. The tool is designed for Rust programmers working on compiler development, parser testing, and language tools who need efficient fuzzing capabilities built directly into their code.

written from the facts on this page · September 2026

From the sources

Autarkie is a native grammar fuzzer built in Rust. Using procedural macros, it (almost completely) automatically creates a grammar fuzzer. Autarkie is heavily inspired by nautilus . This example fuzzes sqlite3 by using grammar defined in datafusion-sqlparser-rs . Personal favourite as it shows Autarkie's magic: you can build a highly sophisticated grammar fuzzer covering a language as complex as SQL in under 5 minutes. This example also shows how you can render the internal structure into a different format for the harness This example fuzzes Solana's sbpf interpreter which is implemented in Rust. Autarkie has cargo-fuzz integration, so it is trivial to fuzz native Rust projects. The type…from github.com

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