Developers

Integration surface: REST · webhooks · sandbox

Use cashwerk programmatically—from CRM synchronization to invoicing robotics—hosted in Germany with granular scopes.

Cashwerk separates operational CRM/project data from financial exports so auditors stay comfortable while engineers stay productive.

This hub summarizes conceptual surfaces; the external reference enumerates payloads, pagination, retries, signature headers, webhook replay strategy.

REST resources

CRUD-ish endpoints covering customers, quotes, timers, invoices, attachments—consistent cursor pagination & idempotency keys.

OpenAPI 3

Subscribe to invoice finalization, payment status, project status, user lifecycle—signed deliveries with replay windows.

HMAC verified

Scoped API keys, per-tenant isolation, optional IP allow lists, rotation guidance for long-running automations.

Least privilege

Follow the canonical documentation for field-level schemas, error codes, rate limits, and changelog of breaking API revisions.

Stay on this marketing site for positioning; engineering detail lives in the documentation portal.

We help banking-style integrations, SAP/DATEV adjacency, and regulated customer reviews without generic ticket ping-pong.

Laden...