Osmedeus
Declarative YAML orchestration engine for security automation workflows.
Osmedeus v5.0 is a powerful, flexible orchestration engine for security pros who live in YAML. The learning curve is real, but for complex, multi-stage automation it beats cobbling together scripts. If you're a beginner, start with something like Nuclei; if you need serious pipeline control, Osmedeus is a strong pick.
Verified 9d ago · liveness 50/100 · cite: rightaichoice.com/tools/osmedeus
- Penetration testers automating reconnaissance and scanning workflows
- Red teamers building complex multi-stage attack chains
- Bug bounty hunters managing large-scale, parallel scope scanning
- Security teams requiring scalable, distributed automation across many targets
- Beginners without YAML or security automation experience
- Users needing a GUI-only tool with no CLI interaction
- Non-security professionals looking for general-purpose automation
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Skip Osmedeus if you're not comfortable writing YAML and designing multi-step security workflows from scratch, or if you prefer a GUI-first tool with ready-made scan templates.
You'll need to provision and maintain your own infrastructure for distributed execution (e.g., Redis, Docker, SSH), which adds operational overhead and cost.
Osmedeus is free and open-source—no per-seat or per-scan fees, making it highly cost-effective for individual pentesters and small teams. However, you'll invest in infrastructure and your own time. Compare to commercial orchestration platforms like Automox or Jit that charge per-seat, Osmedeus offers far lower direct cost but requires more self-service.
In short
Osmedeus — Declarative YAML orchestration engine for security automation workflows. Best for Penetration testers automating reconnaissance and scanning workflows, Red teamers building complex multi-stage attack chains, Bug bounty hunters managing large-scale, parallel scope scanning. Free to use.
What's new in Osmedeus
Checked 7 days agoAcross the latest 1 update: 1 launch.
Viability Score
How well maintained and how widely used is Osmedeus? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: September 2026
How we score →Key Features
- Declarative YAML workflow definitions
- Flexible execution: local, Docker, SSH, Redis workers
- Smart orchestration with conditions, events, scheduling, parallel execution
- Extensible automation: templates, utilities, plugins, HTTP steps
- Built-in AI agents and LLM-powered actions
- Web UI for visualizing workflows, assets, and execution state
- Vulnerability scanning and reconnaissance automation
- Asset management and export capabilities
- Decision routing (switch/case, goto, on-success actions)
- Parallel module execution with dependency management
- Community-built workflows and modules
- CLI and API access for automation
- Bash, Docker, SSH, and agent execution modes
- Conditional logic with switch/case and goto actions
About Osmedeus
Osmedeus is an open-source, declarative YAML orchestration engine built for security professionals who want to automate everything from reconnaissance to vulnerability scanning. Instead of stitching together one-off scripts, you define the entire pipeline—targets, modules, execution order, conditions, and scheduling—in clean, human-readable YAML. The engine handles the heavy lifting: running workflows locally, in Docker, over SSH, or distributed across Redis workers, with parallel execution and smart decision routing. The recent v5.0 release (January 2026) delivers a cleaner, more flexible architecture with next-level performance and power. This means faster execution, easier workflow creation, and a more maintainable codebase—just what you need when running large-scale security operations. The tool's declarative approach lets you design readable pipelines that are both powerful and easy to version control. Osmedeus ships with a modern web UI for visualizing runs, assets, and execution state. You can export results or plug them into your stack. It also includes built-in AI agents and LLM-powered actions, letting you inject intelligence into your automation—from decision-making to dynamic responses. The tool supports multiple execution modes, including Bash, Docker, SSH, and agent mode, and offers decision routing with switch/case and goto actions for complex conditional flows. It's trusted by Fortune 500 companies and has an active GitHub community (6.2k stars) contributing workflows and modules. But this is not a click-and-go tool; it's built for those who write YAML and want full control over their security pipelines. If you're a penetration tester, red teamer, or bug bounty hunter, Osmedeus gives you the flexibility to automate complex, multi-stage workflows that would be unwieldy with simpler tools.
Behind the Verdict
Osmedeus doesn't try to be the easiest tool on the block. It's an orchestrator for people who already know security automation and want to bring it all under one roof. The declarative YAML model is genuinely elegant—you can define a whole recon-to-scan pipeline in a readable file that lives in version control. That's a big deal for repeatable, auditable security work. When should you pick this? If you're a penetration tester juggling multiple targets, a red teamer building attack chains, or a bug bounty hunter scanning at scale, Osmedeus's parallel execution and decision routing will save you hours. The v5.0 architecture refinements make it faster and more flexible, and the built-in AI agents add a modern twist that’s rare in security tooling. When should you pass? If you're new to security automation or prefer GUIs over YAML, the learning curve will bite. The tool is open-source, so there's no slick support umbrella—you rely on community and docs. Also, if you're only running a single scan occasionally, the overhead of defining workflows isn't worth it; a simple runner like Nuclei will do the job. Compared to other automation frameworks, Osmedeus stands out for its breadth of execution modes—local, Docker, SSH, Redis workers—and its conditional logic. It's not just a chain of commands; it's a decision engine. The trade-off is complexity: more moving parts, more to learn, and a steeper setup than a ready-made scanner. Real-world caveats: the v5.0 release notes are thin, but the promise of “next-level performance” aligns with community demand for speed. The web UI is a plus for visual oversight, but core work happens in YAML and CLI. Also, the AI integration is still early—don't expect it to replace your brain, just to assist. For teams invested in automation,
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Real-world workflow fit
Concrete scenarios for the personas Osmedeus actually fits — and what changes day-one when you adopt it.
Automate recon and scan of a new client target
Outcome: Write a YAML flow that defines target domains, runs subdomain enumeration, then ports and vulnerability scanning using community modules, and exports results to a report—all executed with a single command.
Run a multi-stage attack simulation with conditional logic
Outcome: Create a workflow with multiple modules (bash, docker, SSH) using switch/case to route based on scan status, and schedule execution across distributed Redis workers for speed.
Scan a large scope of targets in parallel
Outcome: Use Osmedeus's parallel execution and Redis workers to scan hundreds of hosts simultaneously, with the web UI giving real-time progress and asset tracking.
Use Cases
- Automate reconnaissance workflows for new targets using declarative YAML
- Run distributed vulnerability scanning across multiple hosts with Redis workers
- Integrate LLM-powered actions for intelligent decision-making in security pipelines
- Design and execute complex multi-step attack sequences with conditions and scheduling
- Visualize scan results and asset data through the web UI for analysis
Models Under the Hood
as of 2026-08-31
Limitations
- Osmedeus requires writing declarative YAML workflow definitions, which may have a learning curve for beginners.
- Users need to manage their own infrastructure for distributed execution, such as Docker, SSH, and Redis workers.
- The platform supports extensibility through templates, utilities, plugins, and HTTP steps, and includes built-in AI agents and LLM-powered actions for intelligent automation.
as of 2026-08-21
Verification history
We have re-verified Osmedeus 7 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 7 verification passes.
Free to cite with attribution — this page re-verifies continuously.
Where the pricing makes sense
The company stage and team size where Osmedeus's pricing actually pencils out — and where peers do it cheaper.
Osmedeus is free and open-source—no per-seat or per-scan fees, making it highly cost-effective for individual pentesters and small teams. However, you'll invest in infrastructure and your own time. Compare to commercial orchestration platforms like Automox or Jit that charge per-seat, Osmedeus offers far lower direct cost but requires more self-service.
Setup time & first value
How long it actually takes to get something useful out of Osmedeus — broken out by persona, not the marketing-page minute.
For a YAML-savvy security pro: install via curl, write a basic flow, and run within 30 minutes. Expect a few hours to master the full syntax and integrate with your toolchain. For a beginner: budget a weekend to learn YAML and workflow concepts before seeing real value.
Switching to or from Osmedeus
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Bash scripts: Rewrite your handwritten recon/scan pipelines into declarative YAML flows, reusing existing tools as modules.
- →From Nuclei standalone: Wrap Nuclei scans as modules inside Osmedeus to add orchestration and parallelization.
- ↗To Nuclei: If you only need simple scanning, switch to Nuclei's template engine—less setup but no workflow orchestration.
- ↗To a commercial platform (e.g., Jit, Automox): If you need managed infrastructure, GUI-first workflows, and compliance reporting, migrate your YAML flows to their pipeline format.
Resources & Guides
Tutorials & Learning
Official links
Tools that pair well with Osmedeus
Common stack mates teams adopt alongside Osmedeus, with the specific reason each pairing earns its keep.
Featured Head-to-Head Comparisons
Osmedeus vs Audioeye
If you're a security professional automating penetration testing workflows, Osmedeus is a powerful, free open-source choice. For enterprises needing ADA/WCAG compliance with legal backing, AudioEye's paid platform offers integrated scanning, remediation, and expert audits. They serve entirely different domains—choose based on your compliance or security automation needs.
Osmedeus vs Sublime Security
Osmedeus and Sublime Security serve entirely different domains: Osmedeus is a free, open-source orchestration engine for security automation (recon, scanning) best for technical practitioners; Sublime Security is a paid, AI-powered email security platform for enterprise teams fighting phishing and BEC. Choose based on your primary threat surface – network/infrastructure attacks (Osmedeus) vs email-borne social engineering (Sublime Security).
Osmedeus vs Push Security
Choose Push Security if your priority is defending against browser-based attacks and securing AI tool usage in your organization; it fills a gap left by EDR solutions. Choose Osmedeus if you need a flexible, open-source orchestration engine to automate reconnaissance and scanning workflows. They are complementary: Push secures the browser endpoint while Osmedeus automates offensive security tasks.
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