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Claude + Cuiar

From Claude's draft to a filled-in form.

  • Custom connector on every plan
  • Free: one custom connector
  • Web, desktop and mobile
Set it up Get Cuiar

You use Claude to read, compare and write. Many of the pages you need are behind a login: a paid journal, an analytics dashboard, your insurer's portal.

Add Cuiar as a custom connector, and Claude reads those pages in your signed-in tabs. When a form must be filled in, Claude writes the answers, Cuiar types them, and the tab stops before Submit.

On the left, a project summary in Claude. On the right, a grant form in a Cuiar tab. Each answer moves from the summary into its field, and the Submit button waits for the user.

Setup

Add a custom connector.

Do this one time on claude.ai or in Claude Desktop. The connector then also works in the mobile apps, because the connection starts in Anthropic's cloud.

  1. 1

    Open Connectors

    Go to Customize, Connectors and click Add custom connector.

  2. 2

    Enter the server

    Name: Cuiar. MCP server URL:

    https://mcp.cuiar.com/mcp
  3. 3

    Pick the sign-in

    Set Authentication to Sign in now. For the OAuth client, Register automatically works with Cuiar.

  4. 4

    Connect

    Click Add, then Connect. Sign in on cuiar.com and allow the access.

  5. 5

    Turn it on in a chat

    Click the + button in a chat, open Connectors and turn on Cuiar.

Other ways to connect

  • A local server in Claude Desktop

    Open Settings, Developer, Edit Config. Add Cuiar to claude_desktop_config.json and restart the app. On Windows the file is in %APPDATA%\Claude. Install the Cuiar CLI first.

    ~/Library/Application Support/Claude/claude_desktop_config.json
    {
  "mcpServers": {
    "cuiar": { "command": "cuiar", "args": ["mcp"] }
  }
}

  • An API key

    Organizations with request headers (a beta) can choose No sign-in and send a key with the mcp scope.

    Authorization: Bearer cuiar_...

Route

A connector is the one route Claude needs.

Claude connects from Anthropic's cloud. A public server with OAuth is what it needs, and every Claude plan can add one. Claude's code tool runs on Anthropic's servers, so it cannot run the Cuiar CLI on your computer.

Remote MCPmcp.cuiar.com/mcp
Best fit
OAuth on cuiar.com, or an API key header on organizations with request headers.
Local MCPcuiar mcp
Works
Claude Desktop only, from claude_desktop_config.json.
CLIcuiar exec
No
Claude's shell is on Anthropic's servers, away from your computer.
Routineson a schedule
Works
Claude can call create_routine. Claude's own scheduled tasks run in the cloud and reach Cuiar while the app is open.

Example tasks

Work behind a login

  • 01

    Fill in a grant form

    “Here is our project summary. Fill in the foundation's grant application with it, section by section, and stop before Submit.”

    Claude writes each answer. Cuiar types it with type.

  • 02

    Quote paid articles

    “In my Research workspace, open the three articles on EU battery rules in the trade journal I subscribe to. Give me the key quotes with links.”

    The workspace keeps the journal login.

  • 03

    Read a dashboard

    “Sign in to our analytics dashboard and give me last month's top 10 pages with visits and conversion rate as a table.”

    sign_in uses the saved password. Claude never sees it.

  • 04

    Compare renewal offers

    “Sign in to my two insurers' portals. Compare my home policy with their renewal offers: deductible, cover limits and price.”

  • 05

    Watch calls for papers

    “Every Monday at 8:00 Berlin time, check the call-for-papers pages of the three conferences in my field. Email me new deadlines and topics.”

    create_routine with time_zone Europe/Berlin.

Good to know

Team and Enterprise
An Owner adds the connector under Organization settings, Connectors, Add, Custom, Web. Members then click Connect under Customize, Connectors.
Tool control
Under Customize, Connectors, you can set any Cuiar tool to Blocked. Use Allow always only for read tools such as snapshot.
Claude Code
Sign in to Claude Code with the same account, and the connector shows in /mcp.

Templates to run from Claude

All templates

Each template page shows the run_task or create_routine call to give Claude.

  • ShoppingAsks first

    Buy a gift from a wedding registry

    An item from the registry that fits your budget, with a gift note. The payment waits for your approval.

    You start it: When you start it
    • Any online store

  • Shopping

    List the orders I can still return

    Each recent purchase with its last return date and the return cost, the nearest deadline first.

    You start it: When you start it
    • Gmail
    • Any online store
    • Google Sheets

  • Shopping

    Check if a sale price is a real deal

    The price history and other stores' prices, and whether the discount is real.

    You start it: When you start it
    • Amazon
    • Google Shopping
    • Any website

  • Shopping

    Compare a grocery basket across stores

    Your list priced at each store with all fees, and the cheapest store for the whole basket.

    You start it: When you start it
    • Instacart
    • Walmart
    • Any online store
    • +1 more: Google Sheets

  • TravelAsks first

    Book train tickets for a trip

    The best trains for your times, with the cheapest fare and seats. The booking waits for your approval.

    You start it: When you start it
    • Trainline
    • Any booking site
    • Google Drive

  • TravelAsks first

    Book a restaurant table at my destination

    Well-rated places near you that fit your taste, with free tables. The booking waits for your approval.

    You start it: When you start it
    • OpenTable
    • Google Maps
    • Tripadvisor
    • +1 more: Google Calendar

More agents

All AI agents

Start on the Free plan.

The MCP server, the vault and unlimited routines are free. Steps that your own agent takes use no Cuiar credits.

Get CuiarDeveloper docs