Your workflows shouldn't be locked to one platform.
SKILL.md is an open standard for encoding AI-executable workflows in a portable, platform-agnostic format. Build once. Run anywhere.
Platform-specific workflow tooling creates invisible lock-in. Every time you switch models or providers, you're rewriting logic that should be portable by default.
Built for engineers who think in systems.
Skill Studio
Import any SKILL.md file and get structural analysis, model fit scoring, workflow position assessment, and gap analysis. Your universal workflow engineering canvas.
Open Skill Studio →ETHOS.md Validator
A free community tool for validating behavioral governance specifications. Validates 12 required fields, scores completeness and compliance coverage, and identifies the closest behavioral profile.
Try the validator →Verified Model Registry
96 active verified generative models across 13 text-generation providers, plus TypeSafe's separate input-priced decision model (14 providers in the registry). Includes admin-verified pricing, context windows, quality tiers, and best-for tags. Updated weekly. No more guessing at API costs.
Browse models →Portable Skill Packs
Export workflows as ZIP skill packs with SKILL.md files, wrapper prompts for ChatGPT/Claude/Gemini, ops savings reports, and interoperability manifests.
View the ecosystem →SKILL.md is an open standard.
SKILL.md is not a proprietary format. It's a community-owned specification for encoding AI-executable skills — inputs, outputs, execution targets, token estimates, governance metadata, and more. Cromus compiles and optimizes SKILL.md files, but the format belongs to the community.
Portable workflows. Zero lock-in.
Start with the free ETHOS.md or MEMORY.md validator, or bring your first SKILL.md into Skill Studio.
Cromus.ai · Workflow Intelligence as a Service