End-to-End Code Security. Built for Modern Engineering Teams.
Secure every commit, pull request, and release across your entire software supply chain.
Paxley for Code Trust
GitHub-native scanning across every commit, pull request and release. Continuous NS-CTAF control enforcement, SBOM management, dependency governance and CTA-1 to CTA-4 certification scoring.
Paxley for AI Governance
Continuous NS-AIGF control monitoring for AI systems in production. Audit trails, governance dashboards, EU AI Act compliance tracking and board-level AI trust reporting.
Our mission is to give modern engineering teams a unified Code Security Platform
Paxley secures every commit, pull request, and release — without source-code custody concerns and without per-seat pricing.
Paxley scans repositories for code, dependencies, secrets, infrastructure, containers, and licenses, and consolidates all findings into a single dashboard. Code quality and health are included alongside the seven security capabilities.
Installs as a GitHub App. Runs scans in under 5 minutes. Posts results back as PR comments. Source code can remain within the infrastructure via customer-controlled GitHub runners.
Complete code security coverage
Every security dimension in a single scan — no stitching together multiple tools.
What makes Paxley different
Built on Nucleus Systems proprietary frameworks, not generic rulesets.
NS-CTAF & NS-AIGF enforced
Every scan maps directly to Nucleus Systems proprietary control frameworks — not commodity SAST rules or generic policy sets.
GitHub-native, zero friction
Installs as a GitHub App in minutes. Scans every PR and commit in context. No agent, no pipeline change, no maintenance overhead.
Repo-based pricing
Priced per repository, not per developer. 50 devs and 10 repos costs $990/mo — not $4,750/mo. 79% saving versus per-seat tools.
Continuous trust scoring
Live Code Trust Score across all repositories. Track maturity improvement over time. Board-ready and auditor-ready output.
SBOM & supply chain governance
Automatic SBOM generation in CycloneDX and SPDX formats, dependency health scoring, licence compliance and open-source risk tracking.
Source code stays with you
Scans run on your own GitHub runners. No source-code upload. No custody transfer. Designed for enterprises with strict data residency requirements.
How we compare
We respect the incumbents. Honest fit guidance.
| Category | How Paxley compares |
|---|---|
| SCA-first tools | Direct competitor — Paxley wins on per-repo pricing and source-code privacy |
| Code quality platforms | Competes directly — Paxley adds security depth and unified coverage |
| Native SCM security | Competes on price; shares some engine overlap — Paxley adds significantly more scanning engines |
| SAST-focused tools | Broader scope; overlaps on static analysis — Paxley unifies across all 8 capability areas |
| Enterprise SAST platforms | Below their enterprise tier — Paxley is the mid-market alternative |
| Legacy SAST vendors | Complementary — Paxley is faster to deploy and more cost-efficient for modern teams |
| Code health tools | Differentiated focus — Paxley adds supply chain, secrets, IaC, and container coverage |
Pricing & plans
Per repository, not per developer. Security costs scale with your codebase.
Nucleus Systems frameworks enforced
Paxley operationalises Nucleus Systems proprietary frameworks at the point of development — every commit, every PR, every release.
Ready to see Paxley in action?
Book a 30-minute demo with a Nucleus Systems practitioner — or go straight to Paxley and start a free trial today.