Comparison
Guardrails vs prismor
Verdict
Pick Guardrails if guardrails offers an open-source toolkit from NVIDIA for programmers to set safety constraints in conversational systems built on large language models; pick prismor if prismor is a runtime firewall that safeguards AI frameworks against security breaches like prompt injection attacks and secret leaks. It supports Claude Code and Codex.
Markdown twin · Guardrails alternatives · prismor alternatives
GraphCanon updated Sep 11, 2026
14views this month
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Trust & integrity
| Signal | Guardrails | prismor |
|---|---|---|
| Maintenance | Very active (0d since push) As of Sep 11, 2026 · github_public_v1 | Very active (0d since push) As of Sep 11, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 11, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 11, 2026 · github_public_v1 |
| OSV dependency advisories | No published findings from this source as of 2026-07-15 As of Jul 15, 2026 · osv@v1 | No published findings from this source as of 2026-07-15 As of Jul 15, 2026 · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- Guardrails
- Open-source toolkit for adding programmable guardrails to LLM-based conversational systems
- prismor
- Runtime firewall for AI agents to prevent rogue tool calls and security breaches
Stars
- Guardrails
- 7.1k
- prismor
- 343
Forks
- Guardrails
- 831
- prismor
- 35
Open issues
- Guardrails
- 228
- prismor
- 46
Language
- Guardrails
- Python
- prismor
- Python
Adopt for
- Guardrails
- Guardrails offers an open-source toolkit from NVIDIA for programmers to set safety constraints in conversational systems built on large language models.
- prismor
- Prismor is a runtime firewall that safeguards AI frameworks against security breaches like prompt injection attacks and secret leaks. It supports Claude Code and Codex.
Persona
- Guardrails
- -
- prismor
- -
Runtime
- Guardrails
- -
- prismor
- -
License
- Guardrails
- The Apache License, Version 2.0 allows for free use and modification provided that the original license is included in any distribution.
- prismor
- Apache-2.0, permissive open-source license allowing free use and distribution under certain conditions.
Last pushed
- Guardrails
- Sep 10, 2026
- prismor
- Sep 11, 2026
Categories
- Guardrails
- AI Agents, Evaluation & Observability
- prismor
- AI Agents, Evaluation & Observability
Trust and health
Open issues (now)
- Guardrails
- 228
- prismor
- 46
Stars delta
- Guardrails
- +206 (30d)
- prismor
- +63 (30d)
Open issues delta
- Guardrails
- +23 (30d)
- prismor
- +34 (30d)
Full report
- Guardrails
- Trust report
- prismor
- Trust report
Shared compatibility
- Python · Guardrails: Python runtime · prismor: Python runtime
Choose Guardrails if…
- License: Guardrails is Other, prismor is Apache-2.0.
- Requirements: Requires Python versions between 3.10 to 3.13..
- Tags unique to Guardrails: agents, generative-ai, guardrails, llm-safety.
- Guardrails ships Docker support for self-hosted deployment.
- You are working within the NVIDIA ecosystem and would benefit from its extensive support for AI applications.
When NOT to use Guardrails
- If your development does not leverage NVIDIA's technologies, using Guardrails may not provide the expected ease of integration.
- For projects that cannot use Python or require support outside of versions 3.10 to 3.13, this tool would be unsuitable.
Choose prismor if…
- License: prismor is Apache-2.0, Guardrails is Other.
- Pricing: Free with a commercial license for advanced features..
- Requirements: Min 1 GB RAM.
- Tags unique to prismor: agent-security, ai-agents, prompt-injection, security-tools.
- When you need a dedicated firewall for AI tools to block unauthorized calls.
When NOT to use prismor
- Avoid if you do not use supported frameworks like Claude Code or Codex, as it might lack coverage.
- Not suitable if you prioritize open-source contributions over runtime protection.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (NVIDIA-NeMo/Guardrails) · observed Sep 11, 2026
- GitHub forks (NVIDIA-NeMo/Guardrails) · observed Sep 11, 2026
- Last push (NVIDIA-NeMo/Guardrails) · observed Sep 10, 2026
- License file (Other) · observed Sep 11, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (PrismorSec/prismor) · observed Sep 11, 2026
- GitHub forks (PrismorSec/prismor) · observed Sep 11, 2026
- Last push (PrismorSec/prismor) · observed Sep 11, 2026
- License file (Apache-2.0) · observed Sep 11, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: Guardrails 7.1k · prismor 343 (synced Sep 11, 2026).
Common questions
- What is the difference between Guardrails and prismor?
- Guardrails: Open-source toolkit for adding programmable guardrails to LLM-based conversational systems. prismor: Runtime firewall for AI agents to prevent rogue tool calls and security breaches. See the comparison table for live GitHub stats and shared categories.
- When should I choose Guardrails over prismor?
- Choose Guardrails over prismor when License: Guardrails is Other, prismor is Apache-2.0; Requirements: Requires Python versions between 3.10 to 3.13.; Tags unique to Guardrails: agents, generative-ai, guardrails, llm-safety; Guardrails ships Docker support for self-hosted deployment; You are working within the NVIDIA ecosystem and would benefit from its extensive support for AI applications.
- When should I choose prismor over Guardrails?
- Choose prismor over Guardrails when License: prismor is Apache-2.0, Guardrails is Other; Pricing: Free with a commercial license for advanced features.; Requirements: Min 1 GB RAM; Tags unique to prismor: agent-security, ai-agents, prompt-injection, security-tools; When you need a dedicated firewall for AI tools to block unauthorized calls.
- When should I avoid Guardrails?
- If your development does not leverage NVIDIA's technologies, using Guardrails may not provide the expected ease of integration. For projects that cannot use Python or require support outside of versions 3.10 to 3.13, this tool would be unsuitable.
- When should I avoid prismor?
- Avoid if you do not use supported frameworks like Claude Code or Codex, as it might lack coverage. Not suitable if you prioritize open-source contributions over runtime protection.
- Is Guardrails or prismor more popular on GitHub?
- Guardrails has more GitHub stars (7,101 vs 343). Stars measure visibility, not whether either tool fits your constraints.
- Are Guardrails and prismor open source?
- Yes - both are open-source projects on GitHub (Guardrails: Other, prismor: Apache-2.0).
- Where can I find alternatives to Guardrails or prismor?
- GraphCanon lists graph-backed alternatives at Guardrails alternatives and prismor alternatives (Guardrails markdown twin, prismor markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, Guardrails or prismor?
- Guardrails: Very active. prismor: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for Guardrails and prismor?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: Guardrails trust report; prismor trust report.