Onyx Platform vs PromptArmor Claude Skills Risk Assessment: Side-by-Side Comparison (2026)

Onyx Platform: AI control plane for enterprise AI agent security, governance, and observability. built by Onyx Security. Core capabilities include Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection..

PromptArmor Claude Skills Risk Assessment: Threat intel service assessing Claude AI skill definitions for security/privacy risk. built by PromptArmor. Core capabilities include Claude skill definition security assessment via URL, file upload, or paste, Write action risk detection (file writes, email sends, API posts, code execution), Skill definition prompt injection detection..

Both serve the Agentic AI Security market but differ in approach, feature depth, and target audience.

Onyx Platform differentiates with Real-time AI agent activity monitoring across LLMs and frameworks, Session replay and audit trail for compliance and forensics, Shadow AI and unapproved model deployment detection. PromptArmor Claude Skills Risk Assessment differentiates with Claude skill definition security assessment via URL, file upload, or paste, Write action risk detection (file writes, email sends, API posts, code execution), Skill definition prompt injection detection.

Onyx Platform is developed by Onyx Security. PromptArmor Claude Skills Risk Assessment is developed by PromptArmor. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Onyx Platform integrates with AWS, AWS VPC, AWS Bedrock, GCP, Azure and 6 more. PromptArmor Claude Skills Risk Assessment integrates with GitHub, Claude AI Directory, Gmail, Slack. Check integration compatibility with your existing security stack before deciding.

Onyx Platform and PromptArmor Claude Skills Risk Assessment serve similar Agentic AI Security use cases: both are Agentic AI Security tools, both cover Agentic AI Security, Prompt Injection, LLM Security. Key differences: Onyx Platform is Commercial while PromptArmor Claude Skills Risk Assessment is Free. Review the feature comparison above to determine which fits your requirements.