justrust

Rust compile as a service.

Fast remote compiles for your coding agents.

Get started free

First month free · 5,000 remote builds · Login · Enterprise · GitHub

Backed by Combinator

Really fast

3.4× faster
Fresh checkout, shared cache
cargo77.7 s
justrust22.9 s
1.9× faster
Test build, uv-resolver
cargo73.6 s
justrust38.5 s
1.3× faster
Cold check --workspace
cargo70.3 s
justrust52.2 s

Rewritten toolchain, fast CPUs, more cache.

Offloaded to remote servers.

No need for a strong laptop or big cloud VMs. Your machine stays cool and never freezes mid-build.

Heavily cached.

Cachedcargojustrust
Your last build in this target/✓✓
Dependencies across checkouts, worktrees, and agents✗✓
Popular crates.io crates, prebuilt by our fleet✗✓
Proc macros and build script output✗✓
Your builds from other machines and CI✗✓
0%cargo887 of 887 crates compiled
94%justrust54 of 887 crates compiled

Share of a fresh checkout served from cache (Jcode Desktop, empty target/). Only your own crates compile.

Parallel builds for parallel agents

Every agent builds at once. No lock waits.

Get started

Three steps, about two minutes. Sign in, choose a plan (first month free), then copy one command that installs justrust already signed in.

Create an account or sign in

Choose your plan

First month free

On the $20 plan: 5,000 remote builds from day one. Add a card now, nothing is charged for a month. Cancel any time before then in your account and you pay nothing.

Card required, charged only after the free month.

$20/mo

5,000 remote builds a month, plus $40 of Jcode inference credit.

Paid extra builds cost $0.10 each, with a separate monthly limit that defaults to $0. Opt in and adjust your build limit. Included and trial builds are unaffected.

One developer with an agent or two. About 167 remote builds a day.

First month free. Then $20/month until you cancel.

Connect your machine

Choose a plan in step 2 first. Then your install command appears here, already signed in to your account.