Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLIAbout this skill
> Use this skill whenever asked about Polish e-invoicing, KSeF, Krajowy System e-Faktur, faktura ustrukturyzowana, FA(3) schema, structured invoice Poland, e-Faktura, UPO (Urzędowe Poświadczenie Odbioru), KSeF API, KSeF 2.0, batch submission Poland, offline mode KSeF, GTU codes, split payment MPP, NIP validation, or any question about issuing, receiving, validating, or archiving electronic invoices in Poland. Also trigger when preparing FA(3) XML invoices, configuring KSeF API integration, handling KSeF rejection errors, or advising on the transition to mandatory KSeF. This skill covers the FA(3) schema, KSeF API architecture, mandatory fields, validation rules, archiving, penalties, and interaction with Polish VAT returns. ALWAYS read this skill before touching any Polish e-invoicing work.
Quick start
- Copy the install prompt. Use the green button above this README.
- Send it to your agent. Paste it into your coding agent’s chat and send.
- Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.
Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.
0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1
Content SHA-256: f39323cebbee2bc39bfc66d384d375c7d3ba35241d42c3d761b032d836615ad1
About this listing
- Category
- Engineering
- Reported license
- AGPL-3.0
- Listing language (estimated)
- English
- Review status
- Not individually reviewed
- Agent compatibility
- Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.