nemo-guardrails

nemo-guardrails is a skill for Claude Code, Codex from KalarisLabs/research-agent-skills. It costs 139 tokens per session (2,435 once invoked), scanned B, original, no licence file.

Adds runtime safety rails to LLM applications with NVIDIA NeMo Guardrails, configured through Colang 2.0 flows. Covers jailbreak and prompt-injection detection, self-check input/output validation, retrieval-based fact-checking, hallucination detection, PII filtering via Presidio, toxicity detection via ActiveFence…

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Install with agentmods
npx agentmods add skills/kalarislabs/research-agent-skills/nemo-guardrails
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add KalarisLabs/research-agent-skills --skill nemo-guardrails
Clone the repo
git clone --depth 1 https://github.com/KalarisLabs/research-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nemo-guardrails

README.md
[![agentmods](https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nemo-guardrails/github.svg)](https://agentmods.dev/skills/kalarislabs/research-agent-skills/nemo-guardrails)
Your own site
<a href="https://agentmods.dev/skills/kalarislabs/research-agent-skills/nemo-guardrails"><img src="https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nemo-guardrails/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for nemo-guardrails

Your own site · 80×15
<a href="https://agentmods.dev/skills/kalarislabs/research-agent-skills/nemo-guardrails"><img src="https://agentmods.dev/badge/skills/kalarislabs/research-agent-skills/nemo-guardrails.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 139 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,435 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00139 $0.02435
Opus 5.5 $0.00056 $0.00974
Sonnet 5.5 $0.00028 $0.00487
Haiku 4.5 $0.00014 $0.00244

Measured today against content hash 817643bf1412, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

nemo-guardrails scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

"Ignore previous instructions"

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

skills/nemo-guardrails/SKILL.md · 325 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. today First seen · 325 lines · 139 tokens per session scan B 817643bf1412

Subscribe to this mod's changes

nemo-guardrails is a skill published in the GitHub repository KalarisLabs/research-agent-skills (105 stars, last pushed today), with no licence file. It adds 139 tokens to every session and 2,435 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 1 finding (instruction-override phrasing). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-11-07.

Related

nemo-guardrails compared with skills from other repositories

nemo-guardrails next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
nemo-guardrailsKalarisLabs/research-agent-skillsSkill105todaynoneB139Claude Code, Codex
research-managerpoemswe/co-researcherSkill1354d agoMITA21Claude Code
alterlab-pyhealthAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA132Claude Code
alterlab-timesfmAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA150Claude Code
alterlab-esmAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA101Claude Code
alterlab-deepchemAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA127Claude Code
alterlab-pufferlibAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA127Claude Code