Nextesy MCP is a hosted Model Context Protocol server for Nextesy, the Swiss accounting software. Connect Claude, ChatGPT and other compatible AI assistants to read invoices, contacts and accounting data, create quotes and invoices, and manage bookkeeping with your approval. Remote HTTP access, OAuth login and company-specific permissions. Free read access; Pro write actions for CHF 19 per company/month. Independently built by 3agenteers. Not an official Nextesy product.