Getting started

Strider is intentionally strict out of the box: its defaults are designed to surface a broad range of correctness, maintainability, and style issues from the first run. If that policy is stricter than your project needs, see Configuration to tune the checks and adopt Strider at your own pace.

Download

Download and unpack the latest nightly binary for your Linux or macOS machine:

set -euo pipefail

case "$(uname -s)-$(uname -m)" in
  Darwin-arm64)  asset="strider-nightly-darwin-arm64.tar.gz" ;;
  Darwin-x86_64) asset="strider-nightly-darwin-amd64.tar.gz" ;;
  Linux-aarch64) asset="strider-nightly-linux-arm64.tar.gz" ;;
  Linux-x86_64)  asset="strider-nightly-linux-amd64.tar.gz" ;;
  *) echo "Unsupported platform: $(uname -s)-$(uname -m)" >&2; exit 1 ;;
esac

url="https://github.com/gempir/strider/releases/download/nightly/$asset"
curl -fL "$url" -o "/tmp/$asset"
tar -xzf "/tmp/$asset"
rm "/tmp/$asset"
sudo mv strider /usr/local/bin/strider

Build

Strider currently targets Go 1.26 and builds as a statically linked binary.

make build

The binary is written to ./strider. The equivalent Go command is:

CGO_ENABLED=0 go build -trimpath -o strider ./cmd/strider

Add project configuration

Create strider.toml at the repository root. Strider discovers it from the current directory or any parent:

version = 1

[formatter]
print-width = 180

[check]
minimum-severity = "warning"

[checks.file-length-limit]
severity = "warning"
max-lines = 800

[checks.unclosed-http-response-body]
severity = "error"

See Configuration for every formatter, check, path, and baseline setting.

Check a project

Run all checks admitted by the configured severity floor recursively from the current directory:

strider check

The default warning floor runs warning and error checks. Select individual codes when investigating a finding or adopting Strider incrementally:

strider check --only format,no-init,invalid-regexp ./...

Use --minimum-severity warning or --minimum-severity error to run only the corresponding policy layers without changing individual rules.

Include all note, warning, and error checks with:

strider check --minimum-severity note ./...

check is read-only by default. Apply the initial safe automatic fixes for formatting, double negation, redundant switch breaks, and single-argument append calls with:

strider check --fix ./...

Use --fix-unsafe only when you also want fixes classified as potentially unsafe or unsafe. Both modes rerun the checks and report what remains. See Checks for selection, validation, and safety details.

If the format check reports a file, the focused formatting command is:

strider fmt path/to/file.go

Format a project

Run the formatter without paths to recursively write the current directory:

strider fmt

Inspect formatting changes without writing them:

strider fmt --diff

Adopt existing findings

If an established repository has a backlog, generate one check baseline. Existing matches are suppressed while new findings remain visible:

strider check --generate-baseline --baseline strider-baseline.toml ./...

Formatting findings are not captured. Commit the baseline and configure its path under [check]. See Baselines before regenerating or pruning it.

Exit status

Reports and formatted source are written to standard output. Operational errors are written to standard error.