Latch: the missing sign-in between MCP and ChatGPT

Why it surfaced

It targets a very specific interoperability snag: Cursor accepts an API key, while browser-based ChatGPT and Claude.ai ask for a proper sign-in. The page explains the handoff with unusually clear copy, a concrete configuration example, and a bilingual English-Portuguese presentation—though its form is currently only a preview and does not yet provision a tenant.

Latch is an authentication layer that gives an MCP server a URL accepted by Cursor, ChatGPT, and Claude.ai without changing the server's existing API-key setup.