Skylos vs Sublime Security
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | Skylos | Sublime Security |
|---|---|---|
| Target Problem | Code quality & AI-generated code defects | Email security (BEC, phishing) |
| Primary Language/Platform | Python (CLI, CI integration) | Email platforms (Microsoft 365, Google Workspace) |
| AI Focus | Detect AI-code mistakes (hallucinated imports, etc.) | AI-powered threat detection & conversational analysis |
| Integrations | GitHub Actions, Slack, Discord, VS Code, Claude Code, Cursor, MCP | Microsoft 365, Google Workspace |
| False Positives | 21× fewer false positives than Vulture on Flask | Low false positive rates via adaptive learning |
If your pain point is AI-generated Python code introducing bugs or security flaws, Skylos is the clear choice with its low false positives and free tier. If you're defending against advanced email threats like BEC, Sublime Security offers powerful AI detection with custom rules, but its opaque pricing and enterprise focus may not suit small teams. Choose based on attack surface: code vs. inbox.
Skylos is a local-first Python static analysis CLI that catches dead code, secrets, and AI-code mistakes before they merge.
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Agentic email security that auto-triages reported phishing and writes org-specific detections for your SOC.
Visit WebsiteWhat real users say: Skylos vs Sublime Security
Not marketing copy and not our opinion — a structured sweep of public discussion (reviews, forums, communities and video comments), showing what people praise and what they complain about for each tool.
Skylos
35 mentions across 4 sources · 52% positive — mixed (averaged across 4 sources)
Hacker News, YouTube, GitHub, Lemmy
What users praise
- • Dead code detection beats Vulture (29/29 vs 24/29) on real libraries.
- • Local-first CLI with no login requirement offers quick, private testing.
- • Unique focus on AI-code mistakes like hallucinated imports and phantom calls.
- • Integrates with Claude Code, Cursor, GitHub Actions, VS Code, and MCP.
What frustrates them
- • False positives on decorators, TypedDict fields, and closure parameters.
- • Internal package imports incorrectly flagged as undeclared (SKY-D223).
- • macOS terminal probing breaks the TUI progress display.
- • Interactive remove/comment-out fails in WSL2 environments.
Researched Aug 29, 2026
Sublime Security
14 mentions across 2 sources · 76% positive (weighted across 2 sources)
YouTube, Lemmy
What users praise
- • Transparent, auditable verdicts with matched detections beat black-box scoring in the eyes of security practitioners
- • Sublime Script's YARA-like syntax means your own detection engineers can read and test rules
- • ASA auto-triage of user-reported phishing targets the exact backlog SOCs complain about
- • ADÉ drafts backtested org-specific detections that land for one-click approval
What frustrates them
- • Public feedback is dominated by YouTube comments — almost no Reddit, HN, or review-site validation
- • Advanced skill floor means detection-engineering capability is a prerequisite, not a bonus
- • Sublime Script detections need ongoing tuning that falls on your team to own
- • No public pricing — every real quote requires a sales conversation
Researched Oct 7, 2026
Who should pick which
- Python developer using AI coding assistantsPick: Skylos
Skylos catches hallucinated imports, phantom calls, and removed security controls from AI-generated code, with a free CLI and low false positives.
- Security team in a large enterprise facing BEC attacksPick: Sublime Security
Sublime's AI-powered conversational analysis and custom YARA-like rules detect sophisticated email threats with low false positives.
- Open source maintainer cleaning Python codePick: Skylos
Skylos detects dead code and quality issues with 21× fewer false positives than Vulture, and is free to use.
- SOC analyst needing proactive email threat huntingPick: Sublime Security
Sublime's threat hunting interface and deep visibility into email attacks enable analysts to investigate and respond to advanced threats.
- DevOps engineer setting up CI quality gatesPick: Skylos
Skylos integrates natively with GitHub Actions and provides a PR gate to block high-confidence regressions, as highlighted in recent news.
Frequently Asked Questions
Skylos vs Sublime Security: which should you choose?
If your pain point is AI-generated Python code introducing bugs or security flaws, Skylos is the clear choice with its low false positives and free tier. If you're defending against advanced email threats like BEC, Sublime Security offers powerful AI detection with custom rules, but its opaque pricing and enterprise focus may not suit small teams. Choose based on attack surface: code vs. inbox.
Are Skylos and Sublime Security competitors?
Not directly. Skylos focuses on static analysis for Python code (especially AI-generated code), while Sublime focuses on email security. They address different attack surfaces.
Does Skylos support languages other than Python?
Skylos is primarily Python-focused. Other language support is limited, so it's best for Python projects.
Does Sublime Security offer a free tier?
No. Sublime Security is paid only, with pricing available upon contacting sales. There is no public free tier.
Can Skylos detect secrets from AI-generated code?
Yes, Skylos includes secrets detection for hardcoded credentials like AWS and Stripe, and specifically catches insecure defaults and removed controls from AI assistants.
What integrations does Sublime Security offer?
Sublime integrates with Microsoft 365 and Google Workspace for email scanning, but does not support code repositories or CI/CD tools.
How does Skylos integrate with AI coding agents?
Skylos works seamlessly with Claude Code and Cursor via CLI, VS Code extension, and MCP server, catching AI-specific mistakes like hallucinated imports.
Is Sublime Security suitable for small businesses?
It's not recommended for small businesses without dedicated security staff, as it requires tuning detection rules and has enterprise pricing.
Does Skylos require internet connectivity?
Local scans work offline; cloud features like shared triage require uploads. The CLI is local-first and free.
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Last reviewed: July 3, 2026