LLM Security Tools & OWASP Top 10 Assessment
A free self-assessment for LLM applications against the OWASP Top 10 for LLM Applications, plus a map of the LLM security tools that cover each risk. Score your app in a few minutes, then reach for the right tool where you're weak.
Framework: OWASP Top 10 for LLM Applications.
How do you defend against prompt injection (direct and indirect)?
LLM security tools by risk category
There is no single “LLM firewall.” Securing an LLM app means covering each OWASP LLM risk with the matching class of tool. Here is how the free PlayCISO LLM security tools line up:
New to the risk class? Read how malicious LLM routers inject tool calls and steal credentials.
FAQ
What are LLM security tools?
LLM security tools are software that finds and reduces the risks specific to large-language-model applications — prompt injection, sensitive-data disclosure, insecure output handling, excessive agency in tool-using agents, model/supply-chain issues, and abuse of the model. They range from prompt-injection scanners and guardrails to agent/MCP config auditors, model red-teaming suites, and AI bill-of-materials scanners, and they map to the OWASP Top 10 for LLM Applications.
What are the best free LLM security tools?
PlayCISO offers several free, browser-based ones: Prompt Scan (checks content for prompt-injection patterns), MCP Guard (audits an MCP/agent configuration), Model Audit (red-teams a model endpoint you control), AI Footprint (maps your AI attack surface) and AI BOM (inventories AI components). This page also gives a free OWASP-LLM-Top-10 self-assessment to tell you which categories to prioritise.
How do LLM security tools map to the OWASP LLM Top 10?
Each OWASP LLM risk has a matching class of tool: prompt-injection scanners for LLM01/LLM05, guardrails and DLP for LLM02, AI-BOM and dependency scanners for LLM03/LLM04, agent/MCP auditors and human-approval gates for LLM06, and monitoring for LLM09/LLM10. The assessment on this page scores your app against each category so you know which tools to reach for first.
Do I need special tools to secure an LLM application?
You need both process and tooling. The highest-value control is treating tool and retrieved content as data, never instructions, plus least-privilege tool access and human approval for high-impact actions. Tools help you find where those controls are missing — but start by scoring your app so you invest in the right ones.
Are these LLM security tools free?
Yes. The assessment and the linked PlayCISO scanners (Prompt Scan, MCP Guard, Model Audit, AI Footprint, AI BOM) are free and run in your browser with no signup.