AI Firewall - Block Prompt Injection at Runtime
Your agent reads untrusted text, then acts. An AI firewall sits in that path and blocks prompt injection at execution time, so a poisoned page or email cannot turn your agent against you.
Direct answer
An AI firewall is a runtime control that inspects the inputs and actions of an AI agent and blocks malicious ones before they execute. Agentshield runs prompt injection detection on every untrusted input the agent reads, such as web pages, emails, documents, and tool outputs, and stops instruction-override, data-exfiltration, and jailbreak attempts in line. Unlike a one-time scan, it blocks at the moment of action, so a hijacked agent never completes the dangerous step.
Inspects untrusted input
Every web page, email, document, and tool output the agent reads is treated as untrusted and scanned for injection before the agent acts on it.
Blocks at execution time
Detection happens inline on the action path, not as a pre-launch eval, so a hijacked instruction is stopped at the moment it would execute.
Covers the full attack set
Instruction override, data exfiltration, jailbreaks, and tool-poisoning patterns are caught, mapped to the OWASP Top 10 for LLM Applications.
Where it is used
Prompt-injection firewall in the field.
AI gateway
An AI gateway is the single point every agent request passes through. Make it the place you enforce security: inspect inputs, gate tools, watch actions, and log everything.
Read more →LLM security
LLM security is not a model setting. It is a runtime control plane that inspects inputs, constrains actions, and records what happened, in front of every LLM app you ship.
Read more →RAG security
Your RAG pipeline retrieves untrusted documents and feeds them to the model. That is an injection vector. Secure it by inspecting retrieved content before the agent acts on it.
Read more →MCP server security
MCP lets agents call external tools, and a poisoned tool output can hijack the agent. Agentshield inspects MCP traffic and enforces which servers and tools each agent may use.
Read more →The rest of the plane