Prompt defence ends where agent actions begin.
Lakera protects AI conversations. VANGUARD governs what agents are allowed to do after prompts become plans, tool calls, and workflow actions.
Lakera and VANGUARD solve different layers.
Most AI security tools solve a different layer. VANGUARD focuses on runtime governance: what an AI system is allowed to do, in this context, for this tenant, with this tool, using this instruction.
Strongest fit: Prompt injection, jailbreaks, unsafe interactions
Lakera detects prompt injection, jailbreaks and unsafe interactions before or during generation - strong protection at the conversation layer.
Governed AI execution in production
VANGUARD controls trusted instructions, context access, tool execution, and audit evidence once AI systems start taking action - across agents, RAG pipelines, and MCP-enabled workflows.
VANGUARD vs Lakera, layer by layer.
Lakera is strong in its layer - VANGUARD governs the runtime above it. The two are complementary; teams often run both.
Govern actions, not just prompts.
Secure MCP & tool-calling
VANGUARD mediates API access, tool execution, retrieved context, and runtime workflow decisions with tenant-aware policies.
Control stateful AI risk
Agentic threats emerge across memory, retrieved content, tool output, and multi-step execution - not one turn at a time.
Produce governance evidence
Every runtime decision is recorded with ZKP evidence that supports audits, assurance reviews, and internal policy checks.