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Give your AI a memory in about a minute

Let your AI read what you have saved. Add JustOnce to Claude, ChatGPT, Cursor, VS Code, Windsurf, Gemini or any MCP client, then sign in. No API key required.

https://mcp.justonce.aiOAuth sign-inStreamable HTTP
Pick your tool below
Pick your tool

Choose your assistant, follow four steps

Pick the AI you use and add JustOnce once. About a minute, no API key, just a sign-in.

Claude Code

One command in your terminal

  1. 1

    Open your terminal

    Anywhere Claude Code runs — no project or config file to edit first.

  2. 2

    Run the connect command

    Registers JustOnce as a remote MCP server over Streamable HTTP.

  3. 3

    Sign in with OAuth

    Claude Code opens your browser to sign in with Auth0. No API key needed.

  4. 4

    Tell it to remember something

    Say “remember that…” and Claude stores it — then recalls it in every session.

Terminal
$claude mcp add --transport http justonce https://mcp.justonce.ai

Run this command

claude mcp add --transport http justonce https://mcp.justonce.ai

Sign in with OAuth — no API key to paste. JustOnce uses Auth0 (PKCE + Dynamic Client Registration).

Adds JustOnce as a remote MCP server; the OAuth sign-in opens in your browser.

Connected

Your assistant now shares one persistent memory — in every session.

Every client, one endpoint

Whatever you connect, it’s the same remote MCP server and the same memory. No per-tool accounts, no key juggling.

Free includes 2 connected assistants — Plus and Pro are unlimited.

Claude Code

One command in your terminal.

claude mcp add --transport http justonce https://mcp.justonce.ai

Claude Desktop

One-click add on claude.ai.

https://mcp.justonce.ai

Add to Claude

ChatGPT

Enable developer mode, add a connector.

https://mcp.justonce.ai

Cursor

One-click deeplink install.

https://mcp.justonce.ai

Install MCP Server in Cursor

VS Code

One-click deeplink install.

https://mcp.justonce.ai

Add to VS Code

Windsurf

Add a remote MCP server.

https://mcp.justonce.ai

Gemini CLI

One command in your terminal.

gemini mcp add --transport http justonce https://mcp.justonce.ai

Glama

Add a remote MCP server.

https://mcp.justonce.ai

Any MCP client

Works with any remote connector.

https://mcp.justonce.ai

Create your free account

Free: 20 memories and 10 document pages a month, no card. Never used to train models.

Connect FAQ

Connecting, answered

Do I need an API key to connect?

No. Every client signs in with OAuth (Auth0) — using PKCE and Dynamic Client Registration, so there is no API key to copy, paste, or store. You just approve a browser sign-in the first time.

Which AI tools can connect to JustOnce?

Claude Code, Claude Desktop and claude.ai, ChatGPT, Cursor, VS Code, Windsurf, the Gemini CLI, Glama, and any assistant that supports a remote (Streamable HTTP) MCP connector. They all share one memory.

What is the connection endpoint?

https://mcp.justonce.ai — a remote MCP server over Streamable HTTP. Add it once per tool and sign in with OAuth; no local install or proxy is required.

Is my memory shared across every tool?

Yes. Every connected assistant reads and writes the same JustOnce memory, so a fact you save in one tool is recalled in all of them — in every session.

Every policy, lease and receipt, one question away

Free: 20 memories and 10 document pages a month, no card. Connecting takes a minute at a computer.

Get started free

Connect Claude, ChatGPT, Cursor, VS Code, Windsurf, Gemini & any MCP client