ContactAPI

What is ContactAPI?

ContactAPI is an open source API for saving contacts. You send a POST with an email and any JSON fields you want, and they get saved as is. The rest is plain CRUD to list, get, update, and delete. Use a secret key on your backend, or a publishable key in the browser that can only create contacts and is locked to your domains. It also runs an MCP server, so AI clients like Claude can manage your contacts directly.