NVIDIA NeMo Guardrails
7.4#4 in llm security toolsFree planFree planAPILinuxmacOSSelf-hosted
VisitNVIDIA NeMo Guardrails vs Prompt Inspector
Prompt Inspector
7.6#2 in llm security toolsFree planFree planWebAPILinuxmacOS
VisitWhat both publish
| Fact | NVIDIA NeMo Guardrails | Prompt Inspector |
|---|---|---|
| Documentation depth | The documentation covers installation, configuration, Colang, APIs, evaluation, vulnerability scanning, observability, Docker, microservices, troubleshooting and security. | The documentation site covers architecture, REST use, Python and Node SDKs, MCP setup and open-source deployment. |
| Integrations | The documentation lists integrations with NVIDIA safety models, community models, third-party APIs, Python actions, and LangChain tools. | The maker lists a REST API, Python SDK, Node.js SDK, MCP server, and agent skills for OpenClaw and Claude Code. |
| License | The NeMo Guardrails library is licensed under the Apache License 2.0. | The core repository and documentation identify the open-source edition as AGPL-3.0 licensed. |
| Purpose | NeMo Guardrails is an open-source Python package for adding programmable guardrails to LLM-based applications. | Prompt Inspector provides real-time prompt injection detection, sensitive word filtering, and AI safety guardrails through an API call. |
| Python SDK | Applications can use the LLMRails and RailsConfig Python APIs, including synchronous and asynchronous generation methods. | The official Python package is installed with pip and exposes a PromptInspector client with detect and close methods. |
| Repository activity | The public GitHub repository shows about 7.0k stars and 812 forks. | The main public repository shows seven commits, two stars and no forks on the opened page. |
NVIDIA NeMo Guardrails plans
- Open-source NeMo Guardrails libraryFree
- NeMo Guardrails microservicePriced on request
Prompt Inspector plans
- FreeFree
- EnterprisePriced on request
- ProPriced on request
- StarterPriced on request
Pick NVIDIA NeMo Guardrails if…
NeMo Guardrails suits developers and teams building LLM applications that need configurable policy enforcement and safety checks. It is relevant to projects using Python, supported frameworks, or a self-managed deployment.
Pick Prompt Inspector if…
Prompt Inspector suits developers who need API-based checks for prompt injections, jailbreaks, or system-prompt leaks in AI applications. It also fits teams seeking separate detection settings and logs for each app, or non-commercial users who want a self-hosted option.