What's inside Automattic/harper

Automattic/harper is a Rust repo with 180,779 lines written. harper is built with Tokio, SvelteKit, Svelte, and 6 more and uses PostHog. AI signed 0.5% of the 4,193 commits of harper.

harperRust · Apache-2.0
lines written
180,779
files
944
test files
112
GitHub stars
17,449
Uses 2923 more

Read on November 6, 2026, at commit d52aeac.See each one with its proof

How much of harper did AI write?

0.5%

AI signed 0.5% of the 4,193 commits of harper.

Signed by an AIWithout one

Who writes it

Frequently asked questions

What is Automattic/harper?
Automattic/harper is a Rust repo with 180,779 lines written. Its description on GitHub: “Offline, privacy-first grammar checker. Fast, open-source, Rust-powered”

The proof: its page on GitHub

What is harper built with?
harper is built with Tokio, SvelteKit, Svelte, and 6 more and uses PostHog.

The proof: each service with its file and line

How much of harper did AI write?
AI signed 0.5% of the 4,193 commits of harper.

The proof: the commits each tool signed

What license does harper have?
harper is released under the Apache-2.0 license.

The proof: its page on GitHub

How many stars does harper have on GitHub?
harper had 17,449 stars on GitHub on November 6, 2026.

The proof: its page on GitHub

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