--- title: "promptguard vs prismor" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/mturac-promptguard-vs-prismorsec-prismor" tools: ["mturac-promptguard", "prismorsec-prismor"] --- # promptguard vs prismor *GraphCanon updated Sep 20, 2026* ## Verdict Pick promptguard if promptGuard audits prompts for AI agents to ensure safe code generation; 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. [promptguard](https://github.com/mturac/promptguard) reports 86 GitHub stars, 1 forks, and 0 open issues, last pushed Jul 22, 2026. [prismor](https://prismor.dev) has 343 stars, 35 forks, and 46 open issues, last pushed Sep 11, 2026. Figures are from public GitHub metadata via [promptguard's repository](https://github.com/mturac/promptguard) and [prismor's repository](https://github.com/PrismorSec/prismor). | | [promptguard](/tools/mturac-promptguard.md) | [prismor](/tools/prismorsec-prismor.md) | | --- | --- | --- | | Tagline | Audits prompts as behavioral contracts for AI agents. | Runtime firewall for AI agents to prevent rogue tool calls and security breaches | | Stars | 86 | 343 | | Forks | 1 | 35 | | Open issues | 0 | 46 | | Language | Python | Python | | Adopt for | PromptGuard audits prompts for AI agents to ensure safe code generation. | 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 | - | - | | Runtime | - | - | | License | MIT | Apache-2.0, permissive open-source license allowing free use and distribution under certain conditions. | | Categories | AI Agents, Evaluation & Observability | AI Agents, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [promptguard](/tools/mturac-promptguard.md) | [prismor](/tools/prismorsec-prismor.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Very active (96%) | | Days since push | 51d | 0d | | Open issues (now) | 0 | 46 | | Stars delta | +5 (30d) | +63 (30d) | | Open issues delta | 0 (30d) | +34 (30d) | | Owner type | User | Organization | | Full report | [trust report](/tools/mturac-promptguard/trust.md) | [trust report](/tools/prismorsec-prismor/trust.md) | ## Shared compatibility - **Python**: [promptguard](/tools/mturac-promptguard.md) - Python runtime; [prismor](/tools/prismorsec-prismor.md) - Python runtime ## Decision facts: promptguard - **Adopt for:** PromptGuard audits prompts for AI agents to ensure safe code generation. ## Decision facts: prismor - **Pricing:** freemium - Free with a commercial license for advanced features. - **Requirements:** Min 1 GB RAM - **Adopt for:** 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. - **License detail:** Apache-2.0, permissive open-source license allowing free use and distribution under certain conditions. ## Choose when ### Choose promptguard if… - License: promptguard is MIT, prismor is Apache-2.0. - Tags unique to promptguard: audit, prompt-engineering, safety. - When developing AI agents that generate code and need strict adherence to safety standards ### Choose prismor if… - License: prismor is Apache-2.0, promptguard is MIT. - Pricing: Free with a commercial license for advanced features.. - Requirements: Min 1 GB RAM. - Tags unique to prismor: agent-security, llm-security, prompt-injection, security-tools. - When you need a dedicated firewall for AI tools to block unauthorized calls. ## When NOT to use promptguard - If your project does not involve prompting AI for code generation or execution - In scenarios where real-time prompt auditing is required as it focuses on post-audit analysis ## 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. ## Common questions ### What is the difference between promptguard and prismor? promptguard: Audits prompts as behavioral contracts for AI agents.. 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 promptguard over prismor? Choose promptguard over prismor when License: promptguard is MIT, prismor is Apache-2.0; Tags unique to promptguard: audit, prompt-engineering, safety; When developing AI agents that generate code and need strict adherence to safety standards. ### When should I choose prismor over promptguard? Choose prismor over promptguard when License: prismor is Apache-2.0, promptguard is MIT; Pricing: Free with a commercial license for advanced features.; Requirements: Min 1 GB RAM; Tags unique to prismor: agent-security, llm-security, prompt-injection, security-tools; When you need a dedicated firewall for AI tools to block unauthorized calls. ### When should I avoid promptguard? If your project does not involve prompting AI for code generation or execution In scenarios where real-time prompt auditing is required as it focuses on post-audit analysis ### 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 promptguard or prismor more popular on GitHub? prismor has more GitHub stars (343 vs 86). Stars measure visibility, not whether either tool fits your constraints. ### Are promptguard and prismor open source? Yes - both are open-source projects on GitHub (promptguard: MIT, prismor: Apache-2.0). ### Where can I find alternatives to promptguard or prismor? GraphCanon lists graph-backed alternatives at [promptguard alternatives](/tools/mturac-promptguard/alternatives) and [prismor alternatives](/tools/prismorsec-prismor/alternatives) ([promptguard markdown twin](/tools/mturac-promptguard/alternatives.md), [prismor markdown twin](/tools/prismorsec-prismor/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/mturac-promptguard-vs-prismorsec-prismor.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, promptguard or prismor? promptguard: Steady. 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 promptguard and prismor? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [promptguard trust report](/tools/mturac-promptguard/trust); [prismor trust report](/tools/prismorsec-prismor/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=mturac-promptguard`](/api/graphcanon/graph?tool=mturac-promptguard) - 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/_