Add BankJar to Claude, ChatGPT or Codex

BankJar is an MCP connector. It lets your AI assistant look up and compare Spanish bank offers from open, dated data. It is read-only, needs no account and no sign-in, and cannot open accounts or move money. Its answers are information, not financial advice.

The server URL

https://bankjar.fabriquefutur.com/mcp

Authentication: none. Transport: Streamable HTTP. Menu names in the apps below change from time to time; look for “connectors” or “MCP server” if a label differs.

Claude (claude.ai and Claude Desktop)

  1. Open Customize > Connectors.
  2. Click Add custom connector.
  3. Enter the name BankJar and the server URL above. If you are asked how to authenticate, choose No sign-in and leave the OAuth fields empty.
  4. Click Add. The connector shows as connected, and its five tools are listed under Tool permissions.
  5. In a conversation, open + > Connectors, turn BankJar on, and ask a question from the examples below. Approve the tool call when Claude asks.

Team and Enterprise plans: an Owner adds the connector once under Organization settings > Connectors (Add, then Custom), and members then find it under Customize > Connectors. The Free plan allows one custom connector.

ChatGPT

  1. Open ChatGPT Plugins, select the plus button, then Add custom MCP server.
  2. Enter the name BankJar and a short description, for example “Compare Spanish bank offers”.
  3. Under Connection, enter the server URL above, including the /mcp path. Set authentication to none.
  4. Read the risk notice, select I understand and want to continue, then Create as a plugin. Check that the five tools are listed.
  5. Start a new chat, type @, choose BankJar and ask your question.

Whether you can add a custom server depends on your plan and, in a workspace, on your admin’s settings.

Codex and Claude Code

Codex. Add this to ~/.codex/config.toml and restart Codex:

[mcp_servers.bankjar]
url = "https://bankjar.fabriquefutur.com/mcp"

Claude Code. Run once in a terminal:

claude mcp add --transport http bankjar https://bankjar.fabriquefutur.com/mcp

Any other MCP client that supports remote servers:

{
  "mcpServers": {
    "bankjar": {
      "type": "http",
      "url": "https://bankjar.fabriquefutur.com/mcp"
    }
  }
}

Try it

  • Which Spanish bank pays the most for moving a 2,500 euro monthly salary? I can stay 12 months.
  • I am a non-resident. Which everyday bank account without fees can I open in Spain?
  • Where can I park 15,000 euros in Spain for a year at the best rate?

Every offer in an answer carries a source link and the date it was last checked. Open the source before you sign anything.

What the connector can do

  • search_offers Ask in words or pass filters; get ranked Spanish bank offers with sources.
  • get_offer Every term of one offer, its score breakdown and whether you can take it.
  • compare_offers Two to five offers side by side for your profile.
  • list_goals The goals BankJar ranks: salary, savings, account, deposit, welcome.
  • rank_bank_apps Spanish bank mobile apps ranked by store ratings, freshness and payment features.

All five tools only read public data. Nothing is written, sent to a bank or bought.

If it does not connect

Check that the server answers from your machine. It should return a JSON list of five tools:

curl -s -X POST "https://bankjar.fabriquefutur.com/mcp" \
  -H "content-type: application/json" \
  -H "accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Still stuck? See support. What is sent where is in the privacy policy, the rules of use in the terms, and the API for developers on For agents.