inFakt
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.
inFakt publishes 1 API on the APIs.io network. Tagged areas include Company, Accounting, Invoicing, Fintech, and Bookkeeping.
The inFakt catalog on APIs.io includes 1 event-driven AsyncAPI specification.
inFakt’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 23 more developer resources.
Kin Score
APIs 1
Individual APIs this provider publishes, each with its own machine-readable definition.
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
Model Context Protocol servers that expose these APIs to AI agents.
infakt-mcp.yml
MCP SERVEREvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Infakt Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Access & Security 5
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API