> For the complete documentation index, see [llms.txt](https://docs.questflow.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.questflow.ai/financial-harness/open-source-vs-exclusive-skills.md).

# Open-Source vs Exclusive Skills

**Short answer:** [questflowai/investorskills](https://github.com/questflowai/investorskills) is the free public layer — portable judgment systems you can run in Questflow or any agent that reads `SKILL.md`. Questflow exclusive skills are closed-source, labeled from real fund-manager trades (what they watched, why they entered, how they sized, what would invalidate). Public skills are for study and agent workflows. Exclusives are execution-grade distillation.

## The split

|        | Open-source                                | Exclusive                    |
| ------ | ------------------------------------------ | ---------------------------- |
| Where  | GitHub, MIT                                | Questflow paid               |
| Source | Public letters, process, documented styles | Labeled live trades          |
| Use    | Codex / Claude / Cursor / Questflow        | Questflow product            |
| Job    | Teach the harness a known system           | Scale a living manager’s DNA |

Both are Skills in the same four-pillar harness. Exclusive does not replace open-source; it sits on top when you need trade-labeled judgment.

Related: What is an Investor Skill? · What is trading DNA?

*Nothing here is financial advice.*