# Reachability, drift, and smart-diff CLI

Reachability commands
- reachability compute: compute reachability for a scan or graph snapshot.
- reachability findings: list reachability findings with filters.
- reachability explain: explain a finding and show paths.
- reachability summary and job status/logs for batch workflows.

Common options
- --scan-id selects the scan.
- --offline uses local bundles and caches.
- --output-format supports table, json, yaml, sarif.

Drift commands
- drift compare: compare reachability between base and head scans.
- drift show: display a saved drift result.
- Filters include severity, risk increases only, and output format.

Smart-diff commands
- smart-diff compares two artifacts and reports material risk changes.
- Output supports table, json, yaml, and sarif plus bundle output.
- Options include min-priority, tier filters, and offline feed dirs.

Proofs and verification
- smart-diff verify validates proof bundles and signatures.
- Use public keys or trust policy for verification.

Related references
- docs/cli/reachability-cli-reference.md
- docs/cli/drift-cli.md
- docs/cli/smart-diff-cli.md