NVIDIA-NeMo/Guardrails

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NeMo Guardrails is an open-source toolkit for easily adding programmable guardrails to LLM-based conversational systems.

Stars: 7.2k
Forks: 842
Open beginner issues: 0
Indexed issues: 146
Avg merge: 3d 1h
Merged PRs (30d): 25

Dominant language: Python
License: No license data
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

146 open issues indexed

bug: Presidio Sensitive Data Detection with custom recognizers cannot be called twice Open

bug status: needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

NVIDIA-NeMo/Guardrails#2391 · Opened Sep 17, 2026
doc: Broken 'Getting Started Guide' link in root README Open

Difficulty 1/5 Under an hour Newbie friendliness 95/100

NVIDIA-NeMo/Guardrails#2381 · Opened Sep 12, 2026
bug: mask sensitive data on output rail is unusable in 0.24.0: mask_sensitive_data() got an unexpected keyword argument 'context' Open

bug status: needs triage

Difficulty 1/5 Under an hour Newbie friendliness 25/100

NVIDIA-NeMo/Guardrails#2375 · Opened Sep 10, 2026
ci: run a token-free Fern docs check on fork pull requests Open

enhancement status: triaged

NVIDIA-NeMo/Guardrails#2367 · 1 assignee · Opened Sep 8, 2026
bug: jailbreak detection ONNX model classifies benign prompts as jailbreaks Open

bug status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 52/100

NVIDIA-NeMo/Guardrails#2364 · 9 comments · Opened Sep 6, 2026
doc:add Conduct to third-party guardrail catalog Open

documentation status: needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

NVIDIA-NeMo/Guardrails#2363 · Opened Sep 5, 2026
bug: events-history cache key ignores system messages, so a request is answered under an earlier request's system prompt Open

bug status: needs triage

Difficulty 3/5 1-2 days Newbie friendliness 76/100

NVIDIA-NeMo/Guardrails#2360 · 2 comments · Opened Sep 3, 2026
feature: provide a supported OpenTelemetry metrics setup for nemoguardrails server Open

enhancement status: triaged

NVIDIA-NeMo/Guardrails#2359 · 1 assignee · Opened Sep 2, 2026
feature: Support tools param on /v1/chat/completions Open

enhancement status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 45/100

NVIDIA-NeMo/Guardrails#2352 · 1 comment · Opened Sep 1, 2026
doc: add short-lived Pi documentation automation Open

documentation release status: triaged

NVIDIA-NeMo/Guardrails#2350 · 1 assignee · Opened Aug 31, 2026
feature: add a NeuralTrust TrustGuard guardrail to the library catalog Open

enhancement status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA-NeMo/Guardrails#2347 · 1 comment · 13 reactions · Opened Aug 31, 2026
doc: sequence diagram image asset is missing/broken Open

documentation status: needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

NVIDIA-NeMo/Guardrails#2346 · Opened Aug 31, 2026
feature: consistent input-length handling across all rails Open

enhancement status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 45/100

NVIDIA-NeMo/Guardrails#2327 · Opened Aug 24, 2026
refactor: stop configuring logging from library code Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA-NeMo/Guardrails#2314 · 1 comment · Opened Aug 19, 2026
bug: GuardrailsMiddleware ignores Colang bot utterance (result.content) on BLOCKED status Open

bug status: needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

NVIDIA-NeMo/Guardrails#2303 · 1 comment · Opened Aug 18, 2026
feature: public `api_key` property for in-place LLM credential rotation Open

enhancement status: needs triage

Difficulty 3/5 1-2 days Newbie friendliness 35/100

NVIDIA-NeMo/Guardrails#2299 · Opened Aug 18, 2026
bug: Fix Pydantic compatibility for OpenAI chat message validator Open

NVIDIA-NeMo/Guardrails#2292 · 1 comment · 1 assignee · Opened Aug 17, 2026
bug(manifests): Jailbreak rail manifest conflates in-process vs remote, model vs heuristics with conflicting dependencies Open

NVIDIA-NeMo/Guardrails#2285 · 1 assignee · Opened Aug 12, 2026
IORails verbose logging in chat app Open

NVIDIA-NeMo/Guardrails#2280 · 1 comment · 1 assignee · Opened Aug 11, 2026
feature: multi-message evaluation support in /v1/checks Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 58/100

NVIDIA-NeMo/Guardrails#2277 · Opened Aug 11, 2026
refactor: self-check hallucination context bindings Open

refactoring status: needs triage

NVIDIA-NeMo/Guardrails#2274 · 1 assignee · Opened Aug 10, 2026
feature: Native support for v1/responses endpoint Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA-NeMo/Guardrails#2273 · 2 comments · Opened Aug 10, 2026
feature: re-enable PyPI trusted publishing with attestations Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA-NeMo/Guardrails#2272 · 1 comment · Opened Aug 10, 2026
feature: Tool call validation for v1/chat/completions requests Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 50/100

NVIDIA-NeMo/Guardrails#2268 · Opened Aug 7, 2026
bug: server --auto-reload never picks up config changes on a running server Open

bug status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA-NeMo/Guardrails#2263 · 4 comments · Opened Aug 6, 2026
conformance: add missing request properties to chat completion schema Open

Difficulty 3/5 1-2 days Newbie friendliness 70/100

NVIDIA-NeMo/Guardrails#2250 · 2 comments · Opened Aug 4, 2026
epic: close OpenAI API conformance gaps in Guardrails server Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

NVIDIA-NeMo/Guardrails#2249 · Opened Aug 4, 2026
feature: Add Trivy CVE scanner Open

enhancement status: needs triage

Difficulty 3/5 1-2 days Newbie friendliness 58/100

NVIDIA-NeMo/Guardrails#2248 · 3 comments · Opened Aug 4, 2026
Feature request: optional external policy-engine example for custom actions Open

enhancement status: needs triage

Difficulty 3/5 1-2 days Newbie friendliness 55/100

NVIDIA-NeMo/Guardrails#2245 · Opened Aug 3, 2026
bug: `ValueError: Unknown role: context` when using `guardrails.context` on a rail config with `passthrough: true` Open

bug status: needs triage

Difficulty 3/5 1-2 days Newbie friendliness 72/100

NVIDIA-NeMo/Guardrails#2233 · 3 comments · Opened Jul 28, 2026
refactor: introduce a protocol-neutral internal error model Open

refactoring status: needs triage

NVIDIA-NeMo/Guardrails#2231 · 1 assignee · Opened Jul 28, 2026
epic: make downstream failures safe and reliable across Guardrails APIs Open

status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

NVIDIA-NeMo/Guardrails#2230 · Opened Jul 28, 2026
epic: make downstream failures safe and reliable across Guardrails APIs Open

status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

NVIDIA-NeMo/Guardrails#2229 · Opened Jul 28, 2026
feature: Native support for /v1/messages endpoints Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

NVIDIA-NeMo/Guardrails#2226 · Opened Jul 27, 2026
doc: update legacy rail-evaluation commands and data paths Open

documentation status: needs triage

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

NVIDIA-NeMo/Guardrails#2217 · Opened Jul 24, 2026
bug: GenerationLog.print_summary() crashes with stats.total_duration or activated_rail.duration None values Open

bug

NVIDIA-NeMo/Guardrails#2206 · 3 comments · 1 assignee · Opened Jul 22, 2026
bug: bound regex evaluation to prevent ReDoS in regex detection rails Open

bug status: needs triage

NVIDIA-NeMo/Guardrails#2203 · 1 comment · 1 assignee · Opened Jul 22, 2026
bug: require TLS for remote jailbreak detection NIM endpoints Open

good first issue

NVIDIA-NeMo/Guardrails#2202 · 3 comments · 1 assignee · Opened Jul 22, 2026
[Notebook] Financial Services Compliance Guardrails — FCA/MiFID II regulated chatbot example Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

NVIDIA-NeMo/Guardrails#2193 · Opened Jul 20, 2026
Your project is on StackMap — a curated map of the AI stack Open

Difficulty 1/5 Under an hour Newbie friendliness 15/100

NVIDIA-NeMo/Guardrails#2179 · 1 comment · Opened Jul 16, 2026
bug: is_content_safe() drops policy categories for "safe" verdicts with trailing category tokens Open

NVIDIA-NeMo/Guardrails#2174 · 1 comment · 1 assignee · Opened Jul 15, 2026
chore: clean up getattr usage / drop test_llama_guard_output_action_metadata_is_registration_only in tests/test_llama_guard.py Open

NVIDIA-NeMo/Guardrails#2173 · 1 assignee · Opened Jul 15, 2026
bug: missing "global $relevant_chunks" declaration in hf_classifier retrieval flows Open

NVIDIA-NeMo/Guardrails#2172 · 1 comment · 1 assignee · Opened Jul 15, 2026
test: scope asyncio cleanup in test_parallel_rail_outcome_bypass.py instead of awaiting all event-loop tasks Open

NVIDIA-NeMo/Guardrails#2171 · 1 assignee · Opened Jul 15, 2026
injection_detection: opaque KeyError when inline `yara_rules` miss a requested injection name Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

NVIDIA-NeMo/Guardrails#2170 · Opened Jul 14, 2026
feature: multi-turn jailbreak detection rail Open

enhancement status: needs triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

NVIDIA-NeMo/Guardrails#2166 · Opened Jul 12, 2026
feature: multi-turn jailbreak detection rail for persona-injection arc and post-refusal rephrase Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

NVIDIA-NeMo/Guardrails#2143 · Opened Jul 7, 2026
feature: add human-in-the-loop approval rail for Colang v2 output rails Open

enhancement status: needs triage

Difficulty 5/5 Over a week Newbie friendliness 30/100

NVIDIA-NeMo/Guardrails#2121 · 2 comments · Opened Jul 2, 2026
Investigate whether self-check tasks should use config-level lowest_temperature Open

NVIDIA-NeMo/Guardrails#2080 · 1 comment · 1 assignee · Opened Jun 26, 2026
bug(v2): output rails silently stop firing after first abort in multi-turn conversations. Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 74/100

NVIDIA-NeMo/Guardrails#2067 · 3 comments · Opened Jun 23, 2026

NVIDIA-NeMo/Guardrails

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