# inFakt

**Canonical:** https://apis.io/providers/infakt/  
**Website:** https://www.infakt.pl  
**APIs profiled:** 1

inFakt is a Polish fintech platform that combines invoicing software, online accounting, and dedicated bookkeeper services for sole proprietors (JDG), limited-liability companies (sp. z o.o.), foundations and other business types operating in Poland. Used by over 460,000 companies and headquartered in Kraków, inFakt offers a web app, iOS/Android mobile apps, deep KSeF (Poland's National e-Invoice System) integration, and a REST API (v3, JSON) for third-party integrations. The API exposes invoices, clients, products, costs, bank accounts, VAT exemptions, payment methods and business-activity data so e-commerce shops, CRMs and accounting tools can automate invoicing, cost booking and tax compliance. inFakt also publishes a hosted MCP server so AI agents can operate a company's accounting through Claude and other MCP clients.

## Kin Score — 50.9 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 50.9).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 51.6 |
| Governance | 3.1 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 67.4 |
| Commercial Clarity | 44.7 |

## Agent readiness — 47.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | yes |
| Agent Card | no |
| Dry Run Mode | no |

## Access

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

## APIs (1)

- **inFakt API v3** — inFakt's REST API (v3) for automating invoicing and accounting. Resources are addressed with a .json extension under /api/v3/ and authenticated with a per-account API key sent i...

## MCP servers (1)

- **infakt-mcp.yml**

## Security (3)

- **Infakt Authentication** — apiKey · 1 scheme
- **Infakt Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC
- **Infakt Vulnerability Disclosure** — security.txt · contact published

## Tags

Company, Accounting, Invoicing, Fintech, Bookkeeping, e-Invoicing, KSeF, Tax, Poland, SMB

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