--- title: "mcp-trust-plane vs fast-llm-security-guardrails" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/abluva-research-mcp-trust-plane-vs-zenguard-ai-fast-llm-security-guardrails" tools: ["abluva-research-mcp-trust-plane", "zenguard-ai-fast-llm-security-guardrails"] --- # mcp-trust-plane vs fast-llm-security-guardrails *GraphCanon updated Sep 20, 2026* ## Verdict Pick mcp-trust-plane if mCP Trust Plane is designed for organizations that need to enforce security policies on MCP traffic without modifying core components of the protocol stack; 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. [mcp-trust-plane](https://github.com/abluva-research/mcp-trust-plane) reports 100 GitHub stars, 26 forks, and 0 open issues, last pushed Jun 19, 2026. [fast-llm-security-guardrails](https://zenguard.ai/) has 155 stars, 21 forks, and 0 open issues, last pushed Feb 3, 2026. Figures are from public GitHub metadata via [mcp-trust-plane's repository](https://github.com/abluva-research/mcp-trust-plane) and [fast-llm-security-guardrails's repository](https://github.com/ZenGuard-AI/fast-llm-security-guardrails). | | [mcp-trust-plane](/tools/abluva-research-mcp-trust-plane.md) | [fast-llm-security-guardrails](/tools/zenguard-ai-fast-llm-security-guardrails.md) | | --- | --- | --- | | Tagline | Pluggable security framework for MCP traffic | The fastest Trust Layer for AI Agents | | Stars | 100 | 155 | | Forks | 26 | 21 | | Open issues | 0 | 0 | | Language | JavaScript | Python | | Adopt for | MCP Trust Plane is designed for organizations that need to enforce security policies on MCP traffic without modifying core components of the protocol stack. | 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 | - | - | | Runtime | - | - | | License | Apache-2.0 | MIT | | Categories | AI Agents, Evaluation & Observability | AI Agents, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [mcp-trust-plane](/tools/abluva-research-mcp-trust-plane.md) | [fast-llm-security-guardrails](/tools/zenguard-ai-fast-llm-security-guardrails.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Slowing (36%) | | Days since push | 85d | 222d | | Full report | [trust report](/tools/abluva-research-mcp-trust-plane/trust.md) | [trust report](/tools/zenguard-ai-fast-llm-security-guardrails/trust.md) | ## Decision facts: mcp-trust-plane - **Pricing:** freemium - MCP Trust Plane is open-source under Apache 2.0, making it available at no cost but provides flexibility to extend commercially through proprietary filter implementations. - **Requirements:** Min 1 GB RAM - **Adopt for:** MCP Trust Plane is designed for organizations that need to enforce security policies on MCP traffic without modifying core components of the protocol stack. ## Decision facts: fast-llm-security-guardrails - **Adopt for:** 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. ## Choose when ### Choose mcp-trust-plane if… - mcp-trust-plane is primarily JavaScript; fast-llm-security-guardrails is Python. - License: mcp-trust-plane is Apache-2.0, fast-llm-security-guardrails is MIT. - Pricing: MCP Trust Plane is open-source under Apache 2.0, making it available at no cost but provides flexibility to extend commercially through proprietary filter implementations.. - Requirements: Min 1 GB RAM. - Tags unique to mcp-trust-plane: access-control, data-governance-and-ai, data-security, enterprise-security. - mcp-trust-plane ships Docker support for self-hosted deployment. - MCP Trust Plane should be used when you require granular control over tool calls in your MCP-enabled systems, such as enforcing PII redaction or operation blocking. ### Choose fast-llm-security-guardrails if… - fast-llm-security-guardrails is primarily Python; mcp-trust-plane is JavaScript. - License: fast-llm-security-guardrails is MIT, mcp-trust-plane 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 mcp-trust-plane - Avoid MCP Trust Plane if your security needs do not require modification of traffic post-response, as it introduces an additional layer of complexity and latency. - MCP Trust Plane may not be the best choice for environments that strictly enforce language-specific policies since its filters are written in any language and must comply with a strict contract. ## 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. ## Common questions ### What is the difference between mcp-trust-plane and fast-llm-security-guardrails? mcp-trust-plane: Pluggable security framework for MCP traffic. 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 mcp-trust-plane over fast-llm-security-guardrails? Choose mcp-trust-plane over fast-llm-security-guardrails when mcp-trust-plane is primarily JavaScript; fast-llm-security-guardrails is Python; License: mcp-trust-plane is Apache-2.0, fast-llm-security-guardrails is MIT; Pricing: MCP Trust Plane is open-source under Apache 2.0, making it available at no cost but provides flexibility to extend commercially through proprietary filter implementations.; Requirements: Min 1 GB RAM; Tags unique to mcp-trust-plane: access-control, data-governance-and-ai, data-security, enterprise-security; mcp-trust-plane ships Docker support for self-hosted deployment; MCP Trust Plane should be used when you require granular control over tool calls in your MCP-enabled systems, such as enforcing PII redaction or operation blocking. ### When should I choose fast-llm-security-guardrails over mcp-trust-plane? Choose fast-llm-security-guardrails over mcp-trust-plane when fast-llm-security-guardrails is primarily Python; mcp-trust-plane is JavaScript; License: fast-llm-security-guardrails is MIT, mcp-trust-plane 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 mcp-trust-plane? Avoid MCP Trust Plane if your security needs do not require modification of traffic post-response, as it introduces an additional layer of complexity and latency. MCP Trust Plane may not be the best choice for environments that strictly enforce language-specific policies since its filters are written in any language and must comply with a strict contract. ### 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 mcp-trust-plane or fast-llm-security-guardrails more popular on GitHub? fast-llm-security-guardrails has more GitHub stars (155 vs 100). Stars measure visibility, not whether either tool fits your constraints. ### Are mcp-trust-plane and fast-llm-security-guardrails open source? Yes - both are open-source projects on GitHub (mcp-trust-plane: Apache-2.0, fast-llm-security-guardrails: MIT). ### Where can I find alternatives to mcp-trust-plane or fast-llm-security-guardrails? GraphCanon lists graph-backed alternatives at [mcp-trust-plane alternatives](/tools/abluva-research-mcp-trust-plane/alternatives) and [fast-llm-security-guardrails alternatives](/tools/zenguard-ai-fast-llm-security-guardrails/alternatives) ([mcp-trust-plane markdown twin](/tools/abluva-research-mcp-trust-plane/alternatives.md), [fast-llm-security-guardrails markdown twin](/tools/zenguard-ai-fast-llm-security-guardrails/alternatives.md)), 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](/compare/abluva-research-mcp-trust-plane-vs-zenguard-ai-fast-llm-security-guardrails.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, mcp-trust-plane or fast-llm-security-guardrails? mcp-trust-plane: Steady. 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 mcp-trust-plane and fast-llm-security-guardrails? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [mcp-trust-plane trust report](/tools/abluva-research-mcp-trust-plane/trust); [fast-llm-security-guardrails trust report](/tools/zenguard-ai-fast-llm-security-guardrails/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=abluva-research-mcp-trust-plane`](/api/graphcanon/graph?tool=abluva-research-mcp-trust-plane) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_