--- title: "openfirma vs aigis" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/firma-ai-openfirma-vs-killertcell428-aigis" tools: ["firma-ai-openfirma", "killertcell428-aigis"] --- # openfirma vs aigis *GraphCanon updated Sep 20, 2026* ## Verdict Pick openfirma if openfirma is a policy-enforcing sidecar for AI agents that uses Cedar policies to gate outbound calls, built in Rust under the GPL-3.0 license; pick aigis if aigis is a deterministic zero-dependency Python firewall for AI agents offering protection against threats like memory poisoning and prompt injection with no external dependencies or complex configurations. [openfirma](https://firma-ai.github.io/openfirma/) reports 135 GitHub stars, 9 forks, and 8 open issues, last pushed Sep 11, 2026. [aigis](https://pypi.org/project/pyaigis/) has 54 stars, 8 forks, and 13 open issues, last pushed Sep 8, 2026. Figures are from public GitHub metadata via [openfirma's repository](https://github.com/Firma-AI/openfirma) and [aigis's repository](https://github.com/killertcell428/aigis). | | [openfirma](/tools/firma-ai-openfirma.md) | [aigis](/tools/killertcell428-aigis.md) | | --- | --- | --- | | Tagline | Runtime enforcement boundary for AI agents with local sidecar | Deterministic zero-dependency Python firewall for AI agents | | Stars | 135 | 54 | | Forks | 9 | 8 | | Open issues | 8 | 13 | | Language | Rust | Python | | Adopt for | Openfirma is a policy-enforcing sidecar for AI agents that uses Cedar policies to gate outbound calls, built in Rust under the GPL-3.0 license. | aigis is a deterministic zero-dependency Python firewall for AI agents offering protection against threats like memory poisoning and prompt injection with no external dependencies or complex configurations. | | Persona | - | - | | Runtime | - | - | | License | GPL-3.0 | Apache-2.0 | | Categories | AI Agents, Evaluation & Observability | AI Agents, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [openfirma](/tools/firma-ai-openfirma.md) | [aigis](/tools/killertcell428-aigis.md) | | --- | --- | --- | | Days since push | 0d | 4d | | Open issues (now) | 8 | 13 | | Stars delta | +29 (30d) | +1 (30d) | | Open issues delta | -9 (30d) | +2 (30d) | | Owner type | Organization | User | | Full report | [trust report](/tools/firma-ai-openfirma/trust.md) | [trust report](/tools/killertcell428-aigis/trust.md) | ## Decision facts: openfirma - **Adopt for:** Openfirma is a policy-enforcing sidecar for AI agents that uses Cedar policies to gate outbound calls, built in Rust under the GPL-3.0 license. ## Decision facts: aigis - **Adopt for:** aigis is a deterministic zero-dependency Python firewall for AI agents offering protection against threats like memory poisoning and prompt injection with no external dependencies or complex configurations. ## Choose when ### Choose openfirma if… - openfirma is primarily Rust; aigis is Python. - License: openfirma is GPL-3.0, aigis is Apache-2.0. - Tags unique to openfirma: access-control, agentic-ai, ai-agents, authorization. - When you need deterministic and call-level runtime enforcement that specifically leverages Cedar policies tailored for your needs. ### Choose aigis if… - aigis is primarily Python; openfirma is Rust. - License: aigis is Apache-2.0, openfirma is GPL-3.0. - Tags unique to aigis: ai-agent, ai-security, compliance, cybersecurity. - aigis ships Docker support for self-hosted deployment. - When your AI application requires robust security measures with minimal setup complexity ## When NOT to use openfirma - Avoid if you prefer a solution not tightly coupled to Cedar policies, as Openfirma exclusively supports this policy framework. - Do not use if licensing is critical and you need permissive licenses, since Openfirma uses the GPL-3.0 license. ## When NOT to use aigis - If your project strictly avoids adding third-party libraries - When a full-fledged security solution with comprehensive features is necessary over minimal dependency footprint ## Common questions ### What is the difference between openfirma and aigis? openfirma: Runtime enforcement boundary for AI agents with local sidecar. aigis: Deterministic zero-dependency Python firewall for AI agents. See the comparison table for live GitHub stats and shared categories. ### When should I choose openfirma over aigis? Choose openfirma over aigis when openfirma is primarily Rust; aigis is Python; License: openfirma is GPL-3.0, aigis is Apache-2.0; Tags unique to openfirma: access-control, agentic-ai, ai-agents, authorization; When you need deterministic and call-level runtime enforcement that specifically leverages Cedar policies tailored for your needs. ### When should I choose aigis over openfirma? Choose aigis over openfirma when aigis is primarily Python; openfirma is Rust; License: aigis is Apache-2.0, openfirma is GPL-3.0; Tags unique to aigis: ai-agent, ai-security, compliance, cybersecurity; aigis ships Docker support for self-hosted deployment; When your AI application requires robust security measures with minimal setup complexity. ### When should I avoid openfirma? Avoid if you prefer a solution not tightly coupled to Cedar policies, as Openfirma exclusively supports this policy framework. Do not use if licensing is critical and you need permissive licenses, since Openfirma uses the GPL-3.0 license. ### When should I avoid aigis? If your project strictly avoids adding third-party libraries When a full-fledged security solution with comprehensive features is necessary over minimal dependency footprint ### Is openfirma or aigis more popular on GitHub? openfirma has more GitHub stars (135 vs 54). Stars measure visibility, not whether either tool fits your constraints. ### Are openfirma and aigis open source? Yes - both are open-source projects on GitHub (openfirma: GPL-3.0, aigis: Apache-2.0). ### Where can I find alternatives to openfirma or aigis? GraphCanon lists graph-backed alternatives at [openfirma alternatives](/tools/firma-ai-openfirma/alternatives) and [aigis alternatives](/tools/killertcell428-aigis/alternatives) ([openfirma markdown twin](/tools/firma-ai-openfirma/alternatives.md), [aigis markdown twin](/tools/killertcell428-aigis/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/firma-ai-openfirma-vs-killertcell428-aigis.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, openfirma or aigis? openfirma: Very active. aigis: 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 openfirma and aigis? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [openfirma trust report](/tools/firma-ai-openfirma/trust); [aigis trust report](/tools/killertcell428-aigis/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=firma-ai-openfirma`](/api/graphcanon/graph?tool=firma-ai-openfirma) - 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/_