Rechnungsprüfung DE — Pflichtangaben §14 UStG · GoBD · Vorsteuer (audited & signed) / German Invoice Compliance Check (§14 UStG / GoBD) — audited & signed SKILL.md

A portable SKILL.md that checks a German invoice against the mandatory VAT fields of § 14 Abs. 4 UStG and its readiness for input-tax deduction (Vorsteuerabzug, § 15) — in seconds, inside the AI tool you already use (Claude, Codex, Gemini, Cursor and others). What it does

Full Pflichtangaben check per § 14 Abs. 4 UStG, with the exact source for each field. Correctly detects special cases instead of flagging them as errors: small-amount invoices (§ 33 UStDV, ≤ 250 €), reverse-charge (§ 13b), small-business (§ 19), margin scheme (§ 25a), Gutschrift. A mechanical contradiction check — e.g. VAT shown despite § 19 → § 14c — the expensive mistakes a plain checklist misses. A clear verdict: PASS / REVISE / HOLD, each defect with the concrete correction and its input-tax risk. Built-in GoBD note and a DSGVO reminder when real invoices are processed by a cloud AI.

Who it's for Bookkeepers, freelancers and small firms in Germany who want a fast, consistent first pass on incoming or outgoing invoices before booking or payment. Formal check of the mandatory fields — not tax advice, no substitute for a Steuerberater (§ StBerG). Audited & signed Every check rule is GPG-signed (fingerprint-safe, so it still verifies after download). Verify against this fingerprint:

3e5c 01d0 6619 a997 5c83 dda7 7273 dd27 d9c1 e2b1

Instructions: references/VERIFY.md in the package. Automate recurring invoice checks in your company and have them maintained → julianescorpio@proton.me