With anything that speaks MCP, and five have now been checked one by one: Claude (with a connector and with a device token), ChatGPT, Grok, Vibe — formerly Le Chat — and Codex. Grok works on a standard account; Vibe on its free plan, though there you also have to switch it on inside the chat. In ChatGPT you first have to switch on developer mode in the settings, and then it works on Plus and on Pro; the free plan does not have it. Cursor, Claude Code and Windsurf take the same path as Codex, a device token, but have not been tested one by one. Perplexity allows a custom remote connector on its enterprise plan, and its local one is Mac only. And for any AI without a connector there is the button that copies the context block to paste as the first message.