Finds the vulnerabilities other SAST tools miss.
#1 CVE recall (100%) · 6 languages · 35+ CWE types · Fully offline
pip install ansede-static

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Quick Start

pip install ansede-static
ansede-static src/                    # Scan a directory
ansede-static src/ --format sarif     # GitHub Code Scanning
ansede-static src/ --fail-on high     # CI gate (non-zero exit on findings)
ansede-static src/ --format html      # Interactive HTML report
ansede-static src/ --diff-only        # PR scan: only changed files (< 5s)
ansede-static src/ --suggest          # Adaptive rules: improve based on your codebase

No network, no API keys, no compilation. Just Python 3.9+ and rich.

Try the live playground → — no install required.

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Why Ansede?

Most free SAST tools focus on injection bugs (SQLi, XSS). Ansede also catches the authorization flaws that cause real data breaches:

	Bandit	Semgrep	CodeQL	Ansede
SQL Injection, XSS	✓	✓	✓	✓
IDOR / Broken Access Control	✗	✗*	manual	✓ Built-in
Missing Auth on Routes	✗	✗*	manual	✓ Built-in
Ownership Bypass (CWE-285)	✗	✗	✗	✓ Built-in
Offline / Air-gapped	✓	needs sync	✗	✓

*Possible with custom rules; no defaults ship.

@app.route("/invoice/<id>")
@login_required
def get_invoice(id):
    return Invoice.query.get(id)
    # ↑ CWE-639 IDOR: any user can view any invoice
    #   Bandit: silent. Semgrep: silent. Ansede: CRITICAL

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Benchmarks

OWASP Benchmark v1.2 — 2,740 Java Tests

Tool	Recall	Score (Youden)
FBwFindSecBugs	~45%	+35.8% 🥇
Ansede 6.0.0	93.3% 🥇	+0.8% 🥈
CodeQL	~30%	~-20%
Semgrep OSS	~20%	~-30%

#1 in recall. #2 in score. 9 of 11 categories at 100% TPR. Full scorecard →

CVE Recall — 164 Known Vulnerabilities

Language	CVEs	Found	Recall
Python	68	68	100%
JavaScript	42	42	100%
Java	20	20	100%
C#	19	19	100%
Go	15	15	100%
Total	164	164	100%

Semgrep OSS finds 23% of the same corpus. CodeQL finds ~34%.

Precision (v6.2.2)

Metric	Score
Blind audit (400 snippets, 4 runs)	~90% recall, ~97% precision
Real GitHub repos (22 repos, 1,027 files)	0 crashes
CRITICAL on safe parameterized SQL	0 (eliminated)
Test/benchmark/tutorial FP suppression	96% reduction
Quality corpus	56 cases, 96/96 checks (100%)

Real-World Scale

Scanned 58 open-source repos (21,871 files, 3.2M lines) with zero crashes. Detects 35+ CWE types. Average findings: ~0.11 per file on mature Apache/Google libraries.

Performance

Scenario	Throughput
Single file	~0.05s
Batch (4 workers)	4–6 KLOC/s
Rust native grammars	~4,000 LOC/s

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Comparison

	Ansede	Semgrep	CodeQL	FBwFindSec
CVE Recall	100% 🥇	23%	34%	40%
OWASP Recall	93% 🥇	20%	30%	45%
OWASP Score	+0.8% 🥈	-30%	-20%	+36% 🥇
Languages	6 🥇	20+	5+	1
Auth/IDOR detection	✓	custom	manual	✗
Fully offline	✓	partial	✗	✓
Install	pip install	needs binary	needs DB	needs Java
IDE Plugins	VS Code, IntelliJ, VS	VS Code	VS Code	✗
Price	Free + Pro	Free	Licensed	Free

*Competitor OWASP figures from published scorecards. CVE recall from our 164-CVE benchmark.

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Features

• 35+ CWE types — SQLi, XSS, IDOR, auth bypass, SSRF, path traversal, command injection, hardcoded secrets, deserialization
• 6 languages — Python, JavaScript/TypeScript, Go, Java, C#, Rust
• Route-aware analysis — maps HTTP routes → auth guards → data sinks
• Framework profiles — Spring, ASP.NET, Django, Express, Gin, Quarkus
• Incident clustering — groups related findings, cuts noise ~49%
• Confidence scoring — every finding rated 0–100%; low-signal results filtered by default
• Guard detection — recognizes @login_required, @PreAuthorize, [Authorize], Go middleware, HMAC webhooks
• Test-context awareness — automatically suppresses findings in test/benchmark/tutorial files (96% FP reduction)
• Output formats — SARIF (GitHub Code Scanning), CycloneDX SBOM, HTML, JSON
• CI/CD ready — --diff-only PR scanning, --fail-on exit codes, --baseline
• IDE plugins — inline diagnostics + one-click fixes in VS Code, IntelliJ IDEA, Visual Studio 2022

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Adaptive Rules

Ansede learns from your codebase to reduce false positives over time:

ansede-static src/ --suggest          # Analyze gaps, propose new heuristics
ansede-static src/ --all-findings     # Override confidence filter — see everything
ansede-static src/ --min-confidence 0 # Same as --all-findings

After scanning multiple codebases, Ansede generates suppression rules that match your specific framework patterns — fully offline, no ML API required.

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CI/CD Templates

Platform	Template
GitHub Actions	Built-in (uses: mattybellx/Ansede@v6.2.0)
GitLab CI	docs/ci-templates/gitlab-ci.yml
Azure DevOps	docs/ci-templates/azure-pipelines.yml
Jenkins	docs/ci-templates/Jenkinsfile

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GitHub Actions

Basic scan on push:

- uses: mattybellx/Ansede@v6.2.0
  with:
    path: src/
    fail-on: high
    upload-sarif: true
    post-pr-comments: true      # Inline review comments on every PR finding

Auto-scan + open PR with findings (try it on any repo):

# Copy ansede-scan-pr.yml to .github/workflows/
# Then trigger from Actions tab → "Ansede Security Scan + PR"
# Scans your code and opens a PR with the results

→ Copy the workflow template

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Docs

Getting Started	Installation and first scan
Benchmarks	Full methodology and results
CI Integration	GitHub Actions, GitLab CI, Jenkins
IDE Setup	VS Code, IntelliJ, Visual Studio
Configuration	All CLI flags and config options
Writing Rules	Create custom detection rules
FAQ	Common questions
Roadmap	What's coming next
Changelog	Version history

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Contributing

git clone https://github.com/mattybellx/Ansede.git
cd Ansede
pip install -e ".[dev]"
pytest tests/ -q          # 1249 tests

PRs welcome. See CONTRIBUTING.md.

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## License

MIT · Matty Bell

_{Zero telemetry · Zero cloud · 100% offline · ⭐ Star on GitHub}