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Three steps. Then your AI works with Par.

Par works like your AI's external hard drive. Connect it once, and the AI you use, like Claude or Gemini, saves to it and makes apps from it.

1 Create your Par account
2 Add Par to your AI
3 Approve it in Par

Create your Par account.

Your AI will ask you to sign in to Par, so do this first.

All it takes is your email and a password.

Create your account I already have one

Add Par to your AI.

Copy Par's address. Paste it into your AI.

Each AI calls it something different: a connector, a plugin or a custom app.

On your phone? Do this step on a computer.

Par's address

https://par.works/mcp

Pick your AI.

Claude

On claude.ai or the Claude desktop app. Then it's in the Claude phone app too.

Plans: every plan, Free included (one custom connector on Free). On Team and Enterprise, an owner adds Par first in Organization settings, then you click Connect.

Go to Customize, then Connectors.
Click Add, point to Custom and pick Web.
Type Par as the name, paste the address and click Continue twice.
Under Authentication, pick Sign in now. Under OAuth client, pick Register automatically. Click Add.
In any chat, click +, point to Connectors and turn Par on.

Stuck? Anthropic's help page

ChatGPT

On chatgpt.com, in your browser on a computer.

Plans: Business, Enterprise and Edu. An admin or owner adds it, or someone they allow. On Pro, ChatGPT can read your Par but not save to it.

On ChatGPT Free or Plus? Start with Claude. It works on every plan, Free included.

Go to Plugins.
Click the + button, then Add custom MCP server.
Type Par as the name. Under Connection, paste the address.
For sign-in, pick OAuth.
Check I understand and want to continue and click Create as a plugin.
Install the plugin. In a new chat, type @ and pick Par.

Stuck? OpenAI's help page

Gemini

On gemini.google.com in your browser. Then it's in the Gemini phone app too.

Who: anyone 18 or over in the US, with a personal Google Account and Keep Activity on.

Go to gemini.google.com.
Click Settings, then Connected Apps. Don't see it? Click Personal Intelligence first.
Under Custom apps, click Add a custom app.
Paste the address and click Next. Par signs Gemini up by itself, so leave Advanced features closed.
Follow the steps on the screen.

Stuck? Google's help page

Grok

On grok.com.

Plans: every Grok account. On Grok Business and Enterprise, a team admin adds Par first.

Go to grok.com/connectors.
Click New Connector, then Custom.
Paste the address and sign in when Grok asks.

Stuck? xAI's help page

Perplexity

On perplexity.ai.

Plans: Pro, Max and Enterprise. On Enterprise, an admin turns custom connectors on first.

Open Plugins in the sidebar. On some accounts it's still Customize, then Connectors.
Click Add custom, Connector, Add MCP connector, then pick Remote.
Type Par as the name and paste the address into MCP Server URL. For Authentication, pick OAuth 2.0.
Check the box and click Add.
Click the Par card to sign in.

Stuck? Perplexity's help page

Mistral Vibe

On chat.mistral.ai. Vibe is the new name for Le Chat.

Plans: on Free, Pro and Student, you add it yourself. On Team and Enterprise, an admin adds it.

Open Connectors.
Click + Add Connector and open the Custom MCP Connector tab.
Type Par as the name and paste the address into Server URL.
Click Connect and sign in.

Stuck? Mistral's help page

Claude Code

In your terminal. Signed in with your Claude account? Par from claude.ai is there already.

Plans: Pro, Max, Team, Enterprise or a Console account.

Run this:

claude mcp add --transport http --scope user par https://par.works/mcp

Start claude, type /mcp, pick par and choose Authenticate.

Stuck? Claude Code's help page

Codex

In your terminal. The Codex app and its code editor extension share the same settings, so they get Par too.

Plans: ChatGPT Plus, Pro, Business, Enterprise and Edu, or an API key.

Run this:

codex mcp add par --url https://par.works/mcp

Then run codex mcp login par and sign in.

Stuck? OpenAI's Codex help page

Cursor

In Cursor on your computer. Cursor in the terminal reads the same file.

Plans: any Cursor plan.

Open the file ~/.cursor/mcp.json. Make it if it isn't there.

Put Par in it:

{ "mcpServers": { "par": { "url": "https://par.works/mcp" } } }

Save it, restart Cursor and sign in when Cursor asks.

Stuck? Cursor's help page

VS Code

In VS Code with GitHub Copilot.

Plans: every Copilot plan, Free included. On Copilot Business and Enterprise, an admin turns on MCP servers first.

Open the Command Palette and run MCP: Add Server.
Pick HTTP and paste the address.
Type par as the server ID and pick where to save it.
A browser window opens. Sign in there.

Stuck? VS Code's help page

Gemini CLI

In your terminal.

Plans: a paid Gemini API key, or a Gemini Code Assist Standard or Enterprise license.

Run this:

gemini mcp add --transport http -s user par https://par.works/mcp

Start gemini and type /mcp auth par. Sign in in the browser window that opens.

Stuck? Gemini CLI's help page

Using another AI? If it lets you add an MCP server by its address, paste https://par.works/mcp and sign in when it asks.

Approve it in Par.

A Par window opens. Sign in and click Authorize.

That's it. Your AI is connected, and it can read and write your Par from now on. You can take that access back anytime in Par's settings. Your Par is yours.

Now ask your AI to build your first app.

“Make me an app for this week's dinners.”

Someone carries the Par brain in a box from one laptop with an AI to another.

Can I connect more than one AI?

Yes, as many as you like. They all read and write the same Par, so you can switch AI and keep everything.

Does it work on my phone?

Yes. Add Par once in Claude or Gemini on the web, and it's in their phone apps too. Par itself also opens in your phone's browser: Par on every screen.

How do I disconnect an AI?

In Par, open Settings, then Connected apps, and click Revoke next to it.

Create your account See how Par works