# invowerk

**Canonical:** https://apis.io/providers/invowerk-dev/  
**Website:** https://invowerk.dev/  
**APIs profiled:** 1

invowerk provides a free API to validate and convert PDF invoices into e‑invoices (ZUGFeRD, Factur‑X, XRechnung, Peppol). It offers PDF upload, email submission, and direct conversion, preserving the original layout while ensuring compliance with German and EU standards. The service runs on German servers, processes invoices in memory, and discards data after use. Developed by Michael Sann, invowerk is aimed at software manufacturers and tax consultants seeking automated invoice validation and conversion.

## Kin Score — 44.2 / 100 (developing)

Scored 2026-11-13 under rubric 0.28.0.

| Facet | Score |
|---|---|
| Discoverability | 57.1 |
| Contract Quality | 63.1 |
| Contract Governance | 35.6 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 28.0 |
| Access Clarity | 61.7 |

Regulatory layer — **Horizontal (data, software, accessibility, platform)**: 18.6 (matched via fallback).

## Agent readiness — 29.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: medium).

## APIs (6)

- **invowerk Account API** — Check your plan, your remaining requests and credits, and what your plan includes. `GET /v1/me` is always free.
- **invowerk Generation API** — The Generation API from invowerk — 1 operation(s) for generation.
- **invowerk Rendering API** — The Rendering API from invowerk — 1 operation(s) for rendering.
- **invowerk Rules API** — The Rules API from invowerk — 1 operation(s) for rules.
- **invowerk Transform API** — The Transform API from invowerk — 2 operation(s) for transform.
- **invowerk Validation API** — The Validation API from invowerk — 1 operation(s) for validation.

## Agentic access (1)

- **invowerk Agentic Access** — 7 operations · 4 acting

## Security (2)

- **invowerk Authentication** — apiKey · 1 scheme
- **invowerk Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **invowerk Plans Pricing**

## Tags

Invoicing, e-invoice, PDF, Germany

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/invowerk-dev/). Scores are computed from the provider's own public artifacts under a published rubric.