HelvCore

Built for Swiss software teams

The Headless Swiss Finance API

Embed Swiss invoicing, MWST logic, QR-bills, ledger events, and payment recording and reconciliation workflows into your SaaS through one API. Bring your own UI.

Request API access Docs

API access for Swiss SaaS founders and product teams.

API request and QR-bill preview

POST /v1/documents/invoices 
{
  "end_customer_id": "cust_7834",
  "currency": "CHF",
  "lines": [
    {
      "description": "Plan Pro",
      "quantity": {
        "value_milli": 1000,
        "unit": "month"
      },
      "unit_price": {
        "amount_minor": 14900,
        "currency": "CHF"
      },
      "tax_code_id": "tax_ch_mwst_810"
    }
  ],
  "payment_method": "qr_bill"
}

Swiss QR-bill preview generated

Reference: RF18 5390 0754 7034

Amount: CHF 149.00

Swiss finance logic is painful to build and worse to maintain.

QR-bills

Stop chasing changing QR-bill specs and rendering rules. We maintain Swiss invoice infrastructure centrally.

MWST

Do not hardcode VAT assumptions in product code. Swiss VAT categories and rates change over time.

Settlement import

Reconcile from CAMT.053 uploads and Stripe webhooks first, with direct bank connectivity only after partner onboarding is secured.

Use the full engine or just the parts you need.

Mode 1

Full-service finance layer

Send billing and payment events. Get production-ready Swiss finance workflows back.

  • - Invoices and MWST handling
  • - Ledger-ready records
  • - Reconciliation workflows
  • - Accounting exports

Mode 2

Bring your own finance logic

Keep your existing billing. Plug HelvCore in where Swiss-specific complexity starts.

  • - QR-bill generation
  • - Ledger event storage
  • - CAMT and Stripe settlement ingestion
  • - Swiss workflow primitives

Built for deterministic financial workflows.

Early-access architecture focused on reliability and auditability, starting with core Swiss finance workflows.

  • Idempotent endpoints
  • Immutable ledger architecture
  • Audit trails from source event to posting
  • Versioned API contracts
  • Centralized Swiss standards maintenance
  • Embeddable in existing SaaS products

FAQ

What is HelvCore? +

HelvCore is a headless API layer for Swiss finance workflows, starting with invoicing, MWST logic, QR-bills, and reconciliation.

Who is it for? +

It is designed for Swiss SaaS founders, product teams, and developers who need finance workflows without building Swiss-specific infrastructure from scratch.

What does "headless" mean here? +

You keep your own product UI and business experience. HelvCore focuses on API workflows, validation rules, and finance data handling behind the scenes.

Is HelvCore live in production? +

API access starts with a reviewed connection request and scoped server-side API keys.

Which modules come first? +

Initial focus is invoicing, MWST logic, QR-bills, ledger events, and payment recording and reconciliation workflows.