Comparison
invariant-gateway vs fast-llm-security-guardrails
Verdict
Pick invariant-gateway if the invariant-gateway is an observability proxy crafted for Python-based AI agents running under LLMs, offering robust debugging and guardrail implementations; pick fast-llm-security-guardrails if fast-llm-security-guardrails, also known as ZenGuard, is designed for the rapid deployment of security measures into AI agent systems to ensure they operate within defined trust constraints.
Markdown twin · invariant-gateway alternatives · fast-llm-security-guardrails alternatives
GraphCanon updated Sep 20, 2026
vs
Trust & integrity
| Signal | invariant-gateway | fast-llm-security-guardrails |
|---|---|---|
| Maintenance | Slowing (310d since push) As of Sep 13, 2026 · github_public_v1 | Slowing (222d since push) As of Sep 14, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 13, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 14, 2026 · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of Jul 15, 2026 · osv@v1 | Published findings 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
- invariant-gateway
- LLM proxy for observing and debugging AI agent activities
- fast-llm-security-guardrails
- The fastest Trust Layer for AI Agents
Stars
- invariant-gateway
- 80
- fast-llm-security-guardrails
- 155
Forks
- invariant-gateway
- 9
- fast-llm-security-guardrails
- 21
Open issues
- invariant-gateway
- 1
- fast-llm-security-guardrails
- 0
Language
- invariant-gateway
- Python
- fast-llm-security-guardrails
- Python
Adopt for
- invariant-gateway
- The invariant-gateway is an observability proxy crafted for Python-based AI agents running under LLMs, offering robust debugging and guardrail implementations.
- fast-llm-security-guardrails
- fast-llm-security-guardrails, also known as ZenGuard, is designed for the rapid deployment of security measures into AI agent systems to ensure they operate within defined trust constraints.
Persona
- invariant-gateway
- -
- fast-llm-security-guardrails
- -
Runtime
- invariant-gateway
- -
- fast-llm-security-guardrails
- -
License
- invariant-gateway
- Apache-2.0
- fast-llm-security-guardrails
- MIT
Last pushed
- invariant-gateway
- Nov 6, 2025
- fast-llm-security-guardrails
- Feb 3, 2026
Categories
- invariant-gateway
- AI Agents, Evaluation & Observability
- fast-llm-security-guardrails
- AI Agents, Evaluation & Observability
Trust and health
Days since push
- invariant-gateway
- 310d
- fast-llm-security-guardrails
- 222d
Open issues (now)
- invariant-gateway
- 1
- fast-llm-security-guardrails
- 0
Stars delta
- invariant-gateway
- +2 (30d)
- fast-llm-security-guardrails
- +1 (30d)
OSV dependency advisories
- invariant-gateway
- No lockfile (source not queried)
- fast-llm-security-guardrails
- Published findings
Full report
- invariant-gateway
- Trust report
- fast-llm-security-guardrails
- Trust report
Choose invariant-gateway if…
- License: invariant-gateway is Apache-2.0, fast-llm-security-guardrails is MIT.
- Tags unique to invariant-gateway: debugging, guardrails, llm, observability.
- If you are working on Python-based projects and need detailed monitoring of AI agent activities to enhance security or compliance;
When NOT to use invariant-gateway
- In scenarios where the programming language used is not Python, given that invariant-gateway is specifically designed for Python-based applications;
- For organizations that do not require sophisticated guardrails or observability features when dealing with their AI agents' operations;
Choose fast-llm-security-guardrails if…
- License: fast-llm-security-guardrails is MIT, invariant-gateway is Apache-2.0.
- Tags unique to fast-llm-security-guardrails: agentic-ai, ai-agent, ai-runtime, cx-agent.
- Fast integration of privacy and security guardrails in environments where real-time evaluation and observability are critical.
When NOT to use fast-llm-security-guardrails
- If your project requires a more customizable solution than what fast-llm-security-guardrails offers in its out-of-the-box configurations.
- For teams that operate without established runtime environments like LangChain or LlamaIndex, as this may necessitate significant adaptation of ZenGuard.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (invariantlabs-ai/invariant-gateway) · observed Sep 20, 2026
- GitHub forks (invariantlabs-ai/invariant-gateway) · observed Sep 20, 2026
- Last push (invariantlabs-ai/invariant-gateway) · observed Nov 6, 2025
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (ZenGuard-AI/fast-llm-security-guardrails) · observed Sep 20, 2026
- GitHub forks (ZenGuard-AI/fast-llm-security-guardrails) · observed Sep 20, 2026
- Last push (ZenGuard-AI/fast-llm-security-guardrails) · observed Feb 3, 2026
- License file (MIT) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: invariant-gateway 80 · fast-llm-security-guardrails 155 (synced Sep 20, 2026).
Common questions
- What is the difference between invariant-gateway and fast-llm-security-guardrails?
- invariant-gateway: LLM proxy for observing and debugging AI agent activities. fast-llm-security-guardrails: The fastest Trust Layer for AI Agents. See the comparison table for live GitHub stats and shared categories.
- When should I choose invariant-gateway over fast-llm-security-guardrails?
- Choose invariant-gateway over fast-llm-security-guardrails when License: invariant-gateway is Apache-2.0, fast-llm-security-guardrails is MIT; Tags unique to invariant-gateway: debugging, guardrails, llm, observability; If you are working on Python-based projects and need detailed monitoring of AI agent activities to enhance security or compliance;.
- When should I choose fast-llm-security-guardrails over invariant-gateway?
- Choose fast-llm-security-guardrails over invariant-gateway when License: fast-llm-security-guardrails is MIT, invariant-gateway is Apache-2.0; Tags unique to fast-llm-security-guardrails: agentic-ai, ai-agent, ai-runtime, cx-agent; Fast integration of privacy and security guardrails in environments where real-time evaluation and observability are critical.
- When should I avoid invariant-gateway?
- In scenarios where the programming language used is not Python, given that invariant-gateway is specifically designed for Python-based applications; For organizations that do not require sophisticated guardrails or observability features when dealing with their AI agents' operations;
- When should I avoid fast-llm-security-guardrails?
- If your project requires a more customizable solution than what fast-llm-security-guardrails offers in its out-of-the-box configurations. For teams that operate without established runtime environments like LangChain or LlamaIndex, as this may necessitate significant adaptation of ZenGuard.
- Is invariant-gateway or fast-llm-security-guardrails more popular on GitHub?
- fast-llm-security-guardrails has more GitHub stars (155 vs 80). Stars measure visibility, not whether either tool fits your constraints.
- Are invariant-gateway and fast-llm-security-guardrails open source?
- Yes - both are open-source projects on GitHub (invariant-gateway: Apache-2.0, fast-llm-security-guardrails: MIT).
- Where can I find alternatives to invariant-gateway or fast-llm-security-guardrails?
- GraphCanon lists graph-backed alternatives at invariant-gateway alternatives and fast-llm-security-guardrails alternatives (invariant-gateway markdown twin, fast-llm-security-guardrails 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, invariant-gateway or fast-llm-security-guardrails?
- invariant-gateway: Slowing. fast-llm-security-guardrails: Slowing. 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 invariant-gateway and fast-llm-security-guardrails?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: invariant-gateway trust report; fast-llm-security-guardrails trust report.