# Onyx Platform vs Repello AI SkillCheck: side-by-side comparison (2026) [Onyx Platform](https://cybersectools.com/tools/onyx-platform) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Onyx Security](https://cybersectools.com/companies/onyx-security). [Repello AI SkillCheck](https://cybersectools.com/tools/repello-ai-skillcheck) is a free [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Repello AI](https://cybersectools.com/companies/repello-ai). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Agentic AI Security Solutions for Business](https://cybersectools.com/shortlists/best-agentic-ai-security-solutions) picks CrowdStrike Falcon Guardian, Rubrik Agent Cloud, Silverfort AI Agent Security and 5 more. ## Side-by-side comparison | | Onyx Platform | Repello AI SkillCheck | |---|---|---| | Pricing model | Commercial | Free | | Category | Agentic AI Security | Agentic AI Security | | Verified | No | No | | Deployment type | Hybrid | Cloud | | Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | Onyx Security | Repello AI | | Headquarters | – | – | ### Use cases and capabilities | | Onyx Platform | Repello AI SkillCheck | |---|---|---| | Agentic AI Security | Yes | – | | AI Governance | Yes | – | | AI Observability | Yes | – | | AI SPM | Yes | – | | LLM Guardrails | Yes | – | | LLM Security | Yes | – | | MCP Security | Yes | – | | Prompt Injection | Yes | – | | Shadow AI | Yes | – | | GenAI Security | Yes | – | | Security Scanning | – | Yes | | Vulnerability | – | Yes | | MLSecOps | – | Yes | | Generative AI | – | Yes | | Security Tools | – | Yes | ### Core features **Onyx Platform** 10 features listed. Sign in on the page to see them. **Repello AI SkillCheck** 4 features listed. Sign in on the page to see them. ### Integrations **Onyx Platform** 11 integrations listed. Sign in on the page to see them. **Repello AI SkillCheck** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Onyx Platform](https://cybersectools.com/tools/onyx-platform) fits if you need both cloud and on-premises options. - [Repello AI SkillCheck](https://cybersectools.com/tools/repello-ai-skillcheck) fits if you want a cloud product, you are a startup or a small business and you need a free product. ## Onyx Platform vs Repello AI SkillCheck FAQ Common questions when comparing Onyx Platform vs Repello AI SkillCheck for agentic AI security. ### What is the difference between Onyx Platform and Repello AI SkillCheck? **Onyx Platform**: AI control plane for enterprise AI agent security, governance, and observability. Built by Onyx Security. **Repello AI SkillCheck**: Scans and catalogs AI agent skills/plugins for security vulnerabilities. Built by Repello AI. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Onyx Platform and Repello AI SkillCheck? **Onyx Platform** is made by Onyx Security. **Repello AI SkillCheck** is made by Repello AI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Onyx Platform a good alternative to Repello AI SkillCheck? Often, yes. Onyx Platform and Repello AI SkillCheck are both Agentic AI Security products. Key differences: Onyx Platform is Commercial while Repello AI SkillCheck is Free. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Onyx Platform vs Oryo](https://cybersectools.com/compare/onyx-platform-vs-oryo) - [Onyx Platform vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-onyx-platform) - [Onyx Platform vs HikmaAI](https://cybersectools.com/compare/hikmaai-vs-onyx-platform) - [Repello AI SkillCheck vs Oryo](https://cybersectools.com/compare/oryo-vs-repello-ai-skillcheck) - [Repello AI SkillCheck vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-repello-ai-skillcheck) - [Repello AI SkillCheck vs HikmaAI](https://cybersectools.com/compare/hikmaai-vs-repello-ai-skillcheck) ## Alternatives to each - [See all Onyx Platform alternatives](https://cybersectools.com/alternatives/onyx-platform) - [See all Repello AI SkillCheck alternatives](https://cybersectools.com/alternatives/repello-ai-skillcheck) --- Source: https://cybersectools.com/compare/onyx-platform-vs-repello-ai-skillcheck For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/onyx-platform.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Onyx Platform and Repello AI SkillCheck: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md