Compressors
The full inventory of commands tok0 compresses out of the box. ~250 commands across 30 ecosystems, each with a CI-asserted minimum savings floor.
The complete list of commands tok0 ships with built-in compression. Each row’s “floor” is the minimum savings the rule must hit in CI on its captured fixture. Real-world savings are usually higher.
Commands not on this list still work — they pass through tok0’s generic ANSI-strip + hard-cap path, which typically saves 20–40% on any verbose tool.
Version control
| Command | Floor | Type |
|---|---|---|
git diff | 83% | native |
git log | 78% | native |
git status | 70% | TOML |
gh pr list | 68% | native |
gh pr view | 72% | native |
gh issue list | 65% | TOML |
gt log | 70% | TOML |
jj log | 70% | TOML |
Build & package — JavaScript / TypeScript
| Command | Floor | Type |
|---|---|---|
npm install | 80% | native |
pnpm install | 81% | native |
bun install | 79% | native |
yarn install | 78% | TOML |
tsc | 66% | native |
vitest | 71% | native |
jest | 70% | native |
next build | 70% | native |
eslint | 64% | TOML |
prettier | 60% | TOML |
playwright test | 68% | native |
prisma migrate | 70% | TOML |
turbo run | 70% | TOML |
nx run | 70% | TOML |
esbuild | 65% | TOML |
Build & package — Rust
| Command | Floor | Type |
|---|---|---|
cargo build | 72% | native |
cargo test | 68% | native |
cargo clippy | 74% | native |
cargo bench | 70% | TOML |
cargo fmt | 80% | TOML |
Build & package — Python
| Command | Floor | Type |
|---|---|---|
pytest | 73% | native |
ruff check | 65% | native |
mypy | 60% | TOML |
pip install | 72% | TOML |
uv sync | 70% | TOML |
poetry install | 70% | TOML |
black | 60% | TOML |
flake8 | 60% | TOML |
Build & package — Go / Java / .NET / Ruby
| Command | Floor | Type |
|---|---|---|
go build | 67% | native |
golangci-lint | 65% | native |
gradle build | 76% | native |
mvn install | 72% | native |
dotnet build | 72% | TOML |
dotnet test | 68% | native |
rake | 65% | native |
rspec | 70% | native |
rubocop | 65% | native |
Build systems
make, cmake, bazel, ninja, meson, scons, pants, buck2 — all rule-driven, floors 65–75%.
Containers & cloud
| Command | Floor | Type |
|---|---|---|
docker build | 84% | native |
docker compose up | 75% | TOML |
docker inspect | 60% | native (JSON-aware) |
kubectl get | 69% | native |
kubectl get -o json | 60% | native (JSON-aware) |
kubectl describe | 70% | TOML |
helm install | 70% | TOML |
terraform plan | 77% | native |
terraform apply | 75% | native |
aws s3 ls | 72% | native |
gcloud … | 70% | TOML |
ansible-playbook | 75% | TOML |
argocd … | 70% | TOML |
flux … | 70% | TOML |
nerdctl is aliased to the docker dispatcher: every docker subcommand
(ps, build, images, logs, compose, inspect) is also covered
when invoked as nerdctl ….
Package managers
brew, apt, dnf, pacman, snap, flatpak, nix, winget, scoop, choco, gem, nuget, vcpkg, conan — floors 70–85%, mostly TOML rules.
Linters & formatters
shellcheck, hadolint, stylelint, yamllint, markdownlint, clang-format, shfmt, gofmt, swiftformat, ktlint, scalafmt, nixfmt — floors 60–75%.
Security & supply chain
semgrep, trivy, bandit, snyk, grype, gitleaks, checkov,
tfsec, cosign, sops, sonar — floors 65–75%, all TOML rules.
CI/CD: act (local GitHub Actions runner), pre-commit — TOML.
Networking & system tools
Native compressors (CI-asserted ≥60% savings):
| Command | Floor | Notes |
|---|---|---|
curl -v | 60% | drops TLS handshake, request/response headers, progress meter — keeps status line + body |
dig | 60% | keeps the ANSWER section; drops query metadata, AUTHORITY, ADDITIONAL |
lsof | 60% | drops DEVICE/SIZE/NODE columns; group-by-command summary for large outputs |
netstat / ss | 60% | groups by state, keeps LISTEN ports in full, summarises ESTABLISHED |
openssl x509 -text | 60% | indent-aware drop of pub-key bytes, signature, SCT block, AIA URLs |
tar -tvf | 60% | count + size summary, by-extension grouping for archives >50 entries |
TOML rules (strip patterns + head/tail window):
head, tail, cat/bat (route through read), sort, uniq, tree,
sed, awk, wget, nslookup, traceroute, mtr, top, htop,
sysctl, dmesg, journalctl, ip, eza/exa, glab, dasel,
grpcurl, yq, httpie, gpg, keytool, vault, step, zip,
unzip, 7z.
grep/rg/ag share one compressor; find/fd share another.
Other ecosystems
Languages: Elixir (mix, dialyzer), Haskell (cabal, stack), PHP (composer, artisan, phpunit, phpstan), Scala (sbt, mill), Swift (xcodebuild, swiftc), Dart (flutter, dart), mobile (expo, react-native), Perl (prove, cpanm), exotic (zig, nim, crystal, d).
System: ls, grep, find, diff, wc, env, ssh, rsync, tar, unzip, network tools, process tools, service managers.
Databases: mysql, psql, redis-cli, mongo, sqlite3.
API tools: httpie, grpcurl, newman, load testers.
Version managers: nvm, fnm, pyenv, rbenv, rustup, asdf, mise, volta.
When a command isn’t on the list
Three options, in order of effort:
- Run it through tok0 anyway. The generic path strips ANSI and applies a hard cap, saving 20–40% on most verbose tools.
- Write a TOML rule. ~10 lines for a typical case. See Writing TOML rules.
- Ship it as a built-in. PR a
src/rules/<cmd>.tomlinto the repo with an assertion. CI gates the floor.
Run tok0 scan to see which of your already-run commands would benefit from a compressor. It reads your AI tool session histories and ranks the misses by tokens you’d have saved.
Known limitations
Global flag collision. tok0 has two global short flags: -v (--verbose) and -u (--ultra-compact). They take precedence anywhere in argv, so tok0 ls -v interprets -v as tok0’s verbose flag, not as ls -v. To pass -v or -u through to the underlying tool:
tok0 ls -- -v # explicit `--` separator
tok0 ls --classify # long form (no -v collision)Other short flags (-l, -a, -r, -n, -h, etc.) work without escaping — tok0 ls -lah, tok0 grep -r foo, tok0 find -name '*.rs' all do what you’d expect.