YachtMaster

YachtMaster is the ERP that boat yards, marinas, brokers and service workshops run their business on — quotes and orders, projects and tasks, logged hours, parts and stock, purchasing, boats and their histories, customers, and contracts. This connector lets Claude work inside your own YachtMaster company, on the same data your staff see on screen.

Rather than a fixed menu, the connector hands Claude a directory it reads at runtime: list_actions shows what your role may do, describe_action returns the exact input an action takes, and read_action, write_action and delete_action carry it out. That is 173 actions across 23 domains today, and the set grows without your saved configuration changing.

So you can ask for the week's unbilled hours, draft a quote for a winter service and add its lines, open a project and assign its tasks, look up what a customer owns and what was last done to it, check stock before ordering, or pull the service history of a boat by name.

What the connector deliberately cannot do is act outward on your behalf. No tool sends an invoice, mails a customer, takes a payment or records a signature; those stay in the app, with a person. Deletes do exist, and each one is annotated so Claude asks you before it runs. Everything else is an ordinary read or write, recorded in YachtMaster's own audit log with the agent named as its author.

Claude connects as you, through your YachtMaster login, and is held to the same role you have — a mechanic sees what a mechanic sees. An administrator can switch agent access off for the whole company from Settings, which also cuts connections already granted.

Contracts get their own panel: ask to see one and Claude opens the real printed PDF, the same bytes your customer would sign, inside the conversation. The document's wording is never read into the model.

You need a YachtMaster account to use this connector. Setup and the full tool reference: https://www.yachtmaster.cloud/docs/mcp