Software Requirements
Tiny list. Python is the only required dependency.
Required
| Tool | Why | Cost |
|---|---|---|
| Python ≥ 3.9 | runs runner/run-qa.py |
free; pre-installed on macOS / Linux |
| Gumroad account + access token | for the API calls | free up to ~$10/mo of revenue, then 10% + $0.30/sale |
Optional (only if using the n8n workflow)
| Tool | Why | Cost |
|---|---|---|
| n8n ≥ 1.50 | runs the workflow | free self-hosted; $24/mo n8n Cloud Starter |
| Slack | pass/fail notifications | any plan |
| Notion | audit log of QA runs | any plan |
What you do not need
- Internet-facing webhook URL (the runner makes outbound calls only)
- Database server
- Any cloud platform beyond what you're already using to host your products
- Microsoft Office / Google Workspace / paid tools of any kind
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