sast 1.6.4

sast — free, fast static application security testing for CI/CD. Installs a self-contained SAST engine on first run: native AST + cross-file taint across 16 languages (no external tools), secrets with live key validation, SCA, vulnerable JS libraries, CMS plugin/theme/core CVEs (WordPress/Joomla/Drupal/Magento), web-shell & malware detection, IaC; HTML/JSON/SARIF.

sast

Free, fast static application security testing for CI/CD.

sast is a tiny launcher. Installing it is instant; the first time you run it, it downloads a self-contained SAST engine binary that matches your operating system, verifies its checksum, and caches it. Every run after that is native speed with no Python dependencies.

pip install sast
sast .                       # scan the current directory
sast ./src -f sarif -o out   # write a SARIF report into ./out
sast . --fail-on high        # exit non-zero on high+ findings (CI gating)
sast --help                  # full engine options

Coverage at a glance: 1,750+ FP-validated rules · native AST + cross-file taint on 16 languages (regex for 40+) · 230+ secret rule packs with live key validation · SCA across 8+ ecosystems + container/OS packages · ~24,000 CMS advisories · web-shell & malware signatures · IaC (Terraform/K8s/Docker/ CloudFormation) · SARIF / JSON / HTML.

Supports Linux, macOS and Windows (x86-64). On Apple Silicon the macOS binary runs under Rosetta.

Installing

pip install sast creates a sast command (Linux/macOS: <prefix>/bin/sast, Windows: <prefix>\Scripts\sast.exe). For the command to be found, that directory must be on your PATH. The most reliable options:

pipx install sast      # recommended — isolated, always on PATH (all OSes)

or inside a virtual environment:

python -m venv .venv
# Linux/macOS:
source .venv/bin/activate
# Windows:
.venv\Scripts\activate
pip install sast

If sast is "not recognized" / "command not found" after a pip install --user, the per-user scripts dir isn't on your PATH. Either add it, or just run it as a module — this always works regardless of PATH:

python -m sast .

• Windows per-user scripts dir: %APPDATA%\Python\Python3XX\Scripts
• Linux/macOS per-user scripts dir: ~/.local/bin

What it scans

A single self-contained binary — no Python dependencies and no external tools shelled out (no semgrep / trivy / bandit; everything runs in-engine):

• Code vulnerabilities — a native tree-sitter AST + taint engine across 16 languages (Python, JavaScript, TypeScript, Java, Go, Ruby, PHP, C, C++, C#, Rust, Kotlin, Scala, Swift, Lua, Shell) plus regex coverage for 40+, with intra- and cross-file taint that follows include / require / import relationships (source in one file → sink in another).
• Secrets & API keys — entropy + 230+ vendor rule packs, with optional live validation that labels each secret validated / invalid / not validated against its provider.
• Vulnerable dependencies (SCA) — OSV / advisory matching across npm, pip, Maven, Go, Composer, Cargo and more (covers npm audit-style checks).
• Vulnerable JS libraries — RetireJS-style detection of bundled jQuery, AngularJS, lodash, Bootstrap, Handlebars, … versions with known CVEs.
• CMS vulnerable components — WordPress / Joomla / Drupal / Magento plugins, themes and core matched against ~24,000 advisories.
• Web shells & malware — PHP / ASP(X) / JSP / shellcode signatures (c99, r57, WSO, China Chopper, …), obfuscated payloads, reverse shells, and suspicious double-extension uploads (shell.php.jpg).
• IaC / cloud misconfiguration — Terraform, Kubernetes, Docker, CloudFormation, …
• Output as HTML, TXT, JSON or SARIF 2.1.0 (drops straight into GitHub code scanning), with CI exit-code gating via --fail-on.

How it compares

Most free scanners do exactly one thing — Bandit is Python-only SAST, Checkov is IaC-only, Gitleaks is secrets-only, Trivy is SCA/containers. The all-in-one platforms (Semgrep, Snyk) put taint analysis, secrets and SCA behind a paid tier. sast does the whole lot in a single free binary — no external tools shelled out, runs offline.

Capability	sast (Insomnia)	Semgrep	Snyk	Bandit	Checkov	Trivy	Gitleaks
Multi-language SAST + taint	✅ 16 langs	◑ taint = paid	✅	◑ Python	✗	✗	✗
Cross-file taint (include/import)	✅	◑	◑	✗	✗	✗	✗
Secrets + live key validation	✅	◑ paid	◑	✗	✗	◑	◑ no val.
Dependencies / SCA (CVEs)	✅	◑ paid	✅	✗	◑	✅	✗
Vulnerable JS libs (RetireJS)	✅	✗	◑	✗	✗	✗	✗
CMS CVEs (WordPress/Joomla/…)	✅ ~24k	✗	✗	✗	✗	✗	✗
Web-shell & malware detection	✅	✗	✗	✗	✗	✗	✗
IaC / cloud misconfig	✅	✅	✅	✗	✅	✅	✗
Container / OS-package CVEs	✅	✗	✅	✗	✗	✅	✗
SARIF output	✅	✅	✅	◑	✅	✅	✅
Editor plugins (VS Code/JetBrains)	✅	✅	✅	✗	✗	✗	✗
Git pre-push gate	✅	◑	◑	✗	✗	✗	◑
Single offline binary, no extra tools	✅	✗	✗	✗	✗	✅	✅
Free (no paywalled core)	✅	◑	✗	✅	✅	✅	✅

✅ built-in · ◑ partial / paid tier · ✗ not offered

Reflects each tool's free/open-source offering as of mid-2026; paid platform tiers may add capabilities. In short: instead of stitching together Bandit + Gitleaks + Trivy + Checkov (and paying Semgrep/Snyk for taint + SCA), you get one free engine that covers all of it.

Editor & CI integrations

Same engine, everywhere:

• VS Code — the Insomnia SAST extension: inline hints as you type, a Vulnerabilities panel, an All Issues dashboard, mark-as-false-positive, and a git pre-push gate. Install from the VS Code Marketplace or https://insom.ai/plugin.
• JetBrains (PyCharm / PhpStorm / WebStorm / GoLand / IntelliJ) and Visual Studio 2022 — in beta.
• CI — pip install sast && sast . -f sarif -o out --fail-on high, then upload out/*.sarif to GitHub code scanning.

How it works

pip install sast lays down only a few KB of pure-Python launcher — no download happens at install time (that keeps offline/CI installs reliable). On first invocation the launcher:

1. Detects your OS → linux / macos / windows.
2. Fetches https://insom.ai/static/downloads/plugin_manifest.json and reads its sast.<os> entry (filename + sha256 + version).
3. Downloads the matching binary and verifies its sha256.
4. Caches it under your per-user cache directory and execs it.

Because the engine lives on the server, new engine releases reach users without republishing the pip package.

Staying on the latest engine

After the first download the cached binary is reused for speed. At most once per day (SAST_UPDATE_INTERVAL, default 86400 seconds) sast also asks insom.ai whether a newer engine is published and, if so, upgrades itself automatically. Update checks fail open — if you're offline or the server is unreachable, the cached binary keeps working. Set SAST_UPDATE_INTERVAL=0 to pin the cached version, or run sast self-update to force the latest at any time.

Launcher commands

Command	What it does
sast …	Forward all args to the SAST engine
sast self-update	Re-download the latest engine binary
sast self-version	Show launcher + cached-engine versions
sast self-where	Print the cached binary path

Environment variables

Variable	Purpose
SAST_MANIFEST_URL	Override the manifest URL (staging / self-hosting)
SAST_CACHE_DIR	Override where the binary is cached
SAST_UPDATE_INTERVAL	Seconds between auto-update checks (default 86400; 0 disables)

Default cache locations:

• Linux: ~/.cache/sast/bin
• macOS: ~/Library/Application Support/sast/bin
• Windows: %LOCALAPPDATA%\sast\bin

Use in CI (GitHub Actions)

- run: pip install sast
- run: sast . -f sarif -o sarif-out --fail-on high
- uses: github/codeql-action/upload-sarif@v3
  with:
    sarif_file: sarif-out      # the action accepts a directory of .sarif files

sast exits non-zero when findings meet your --fail-on threshold, failing the build.

Server-side manifest format

By default the launcher reads insom.ai's plugin_manifest.json, whose sast section lists the latest per-OS build:

{
  "sast": {
    "windows": { "filename": "insomnia-sast-windows-x64.exe", "sha256": "<hex>", "version": "1.0.0", "uploaded": "<iso8601>" },
    "linux":   { "filename": "insomnia-sast-linux-x64",       "sha256": "<hex>", "version": "1.0.0", "uploaded": "<iso8601>" },
    "macos":   null
  }
}

filename is resolved relative to the manifest URL. The launcher also accepts a simpler { "version", "platforms": { "<os>": { "url", "sha256" } } } shape if you self-host via SAST_MANIFEST_URL. sha256 is enforced when present; a null OS entry means that build isn't published yet.

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© CQR Cybersecurity LLC. The sast launcher is open source; the SAST engine binary it downloads is proprietary. See https://insom.ai.