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Drive cashwerk from your code: REST API with scopes, webhooks for events, an MCP server for AI clients and an n8n node. All from one OpenAPI specification.
The OpenAPI specification is the contract. Endpoints released for external access appear in the developer documentation; the MCP server and the n8n node are generated from it. When an endpoint changes, all three change.
This page maps out the paths. Fields, error codes, rate limits and examples live in the technical reference.
Endpoints under /api/v1 for customers, deals, projects, tasks, time entries, offers and invoices. Access via API key or OAuth 2.0 client, limited by scopes.
OpenAPI 3Events from CRM, projects, time entries and invoices sent to your URL. With test ping, automatic retry and delivery log.
Retry & logAPI keys per organization, OAuth 2.0 clients for third-party apps. Every call passes the scope check, the rate limit and the tenant isolation of your workspace.
ScopesOperate cashwerk from Claude, ChatGPT, Cursor or any MCP client. Sign in via OAuth, your permissions apply.
OAuth 2.0Action and trigger node as a community package, generated from the specification. Runs in n8n Cloud and self-hosted.
npmConnector documentation for Claude: operations, authorisation, permissions, troubleshooting
The full documentation lists endpoints, fields, error codes and rate limits.
Open API documentationOpens in a new tab.
Planning an integration or need a higher rate limit? Write to us and we will look at your case together.
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