# LLM firewall

A checkpoint in front of a model that inspects prompts and responses for injection, sensitive data, and unsafe content. It guards the model's edge, not the agent's actions behind it.

Learn more: [LLM Firewall](/content/learn/llm-firewall/index.html)

Part of [the Agent Control Fabric](/content/platform/index.html): Highflame's identity, policy, and enforcement substrate for AI agents.

## Keep exploring the glossary.

### LLM security tools  
The stack that protects LLM applications: input/output filters, firewalls and gateways, runtime enforcement, red teaming, and observability. No single tool covers all five.  
Read → [Learn more](/content/glossary/llm-security-tools/index.html)

### MCP (Model Context Protocol)  
An open protocol that connects agents to external tools and data. Powerful for capability. But every connection is a new access path that has to be governed.  
Read → [Learn more](/content/glossary/mcp/index.html)

### MCP Gateway  
A governed checkpoint every tool connection passes through (authenticated, policy-checked, and logged) so credentials stay central and unapproved servers can't connect.  
Read → [Learn more](/content/glossary/mcp-gateway/index.html)

### Mission drift  
When a non-deterministic agent gradually diverges from its intended task. Tracked at runtime so it can be contained before consequences land.  
Read → [Learn more](/content/glossary/mission-drift/index.html)

### Non-human identity (NHI)  
Identities belonging to machines, services, and agents rather than people. Agents are the fastest-growing and least-governed class of NHI.  
Read → [Learn more](/content/glossary/nhi/index.html)

### On-behalf-of (OBO) chain  
The unbroken provenance recorded on a credential (who authorized the action, what scope was granted, and how deep the delegation goes) so an audit walks back to a human.  
Read → [Learn more](/content/glossary/obo-chain/index.html)