Can I keep NeMo Guardrails?

Its dialogue rails can stay in the agent’s own code, and Omnia’s policy still applies at each tool call.

omnia vs nemo guardrails

NeMo Guardrails checks tool calls on some providers, where Omnia checks the argument values on every one it runs.

Omnia’s checks live in the runtime, so they apply to every agent and every provider it runs. NeMo Guardrails is an open toolkit of dialogue and tool rails that you wire into each agent.

A Claude agent on Bedrock is about to issue a refund.

on omnia

The refund call passes through the policy broker like every other tool call. The amount is over the caller’s limit, so the call is refused before it runs. docs

on nemo guardrails

Tool-calling rails don’t yet support the OpenAI Responses API, Anthropic, Gemini or Bedrock. their docs

Values, not just shape

A CEL rule reads the arguments’ values and the caller’s claims: refunds under £500, to the caller’s own account, by agents allowed to refund. docs enterprise

NeMo Guardrails: Arguments must validate against the tool’s declared JSON Schema; rules on values aren’t documented. source

Every provider Omnia runs

Policy sits at the tool call, so the same rule applies whichever model asked: Anthropic, OpenAI, Gemini, Bedrock, Vertex, Ollama or vLLM. docs enterprise

NeMo Guardrails: Tool rails don’t yet cover Anthropic, Gemini or Bedrock. source

Built into the platform

Policy, identity, redaction, testing and rollout come with the runtime. The agent’s code stays as it is. docs

NeMo Guardrails: A Python library or self-hosted server; the production microservice needs an NVIDIA AI Enterprise licencelicense. source

At a glance

Topic	Omnia	NeMo Guardrails, per its docs
Open source	yes PromptKit and PromptArena, Apache 2.0. docs	documented Apache 2.0. source
Fails closed on tool calls	yes Yes. docs enterprise	partly Yes, for supported APIs. source
Rules on argument values	yes Yes. docs enterprise	partly Schema validation. source
End-user identity in policy	yes Yes. docs enterprise	not documented Not documented. source
Red teaming before release	yes Adversarial callers gate the release. docs	partly A separate tool, garak. source

Common questions

Can I keep NeMo Guardrails?: Its dialogue rails can stay in the agent’s own code, and Omnia’s policy still applies at each tool call.

Put your own agent through the gate.

Install Omnia in your cluster and run it free while you build.

NeMo Guardrails claims are from NVIDIA’s published documentation, checked 22 October 2026. Spot something out of date? Tell us.

Install it in your cluster Or walk through it with us →