@albertomarturelo/cta-mcp

cta-mcp: a stdio MCP server that lets an AI agent (Claude Desktop, Claude Code, any MCP client) read your own Chilean bank accounts — balances and movements. A thin surface over @albertomarturelo/cta-core.

⚠️ 0.x and unofficial. Not affiliated with, sponsored or endorsed by any bank. Automating access to your own account may breach your bank's terms, and the bank may block your access or your device. Provided "as is", without warranty (MIT). Read-only: it never moves money.

No tool accepts a password: login happens in a browser window where you type your credentials yourself. The login tool returns as soon as the window opens.

Install

npm i -g @albertomarturelo/cta-mcp
npx playwright install chromium
cta-mcp --version

Requires Node ≥ 20. Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "cta": { "command": "cta-mcp" }
  }
}

Tools

bancos, login, logout, cuentas, saldo, movimientos, tarjetas. Every bank-scoped tool takes a required banco, e.g. "bci".

Demo bank

Set CTA_DEMO=1 ("env": { "CTA_DEMO": "1" } in the server entry) to add a fictitious bank, banco: "demo": two accounts, about six weeks of movements and two credit cards, all invented and dated relative to today. Its login opens a local demo page; press «Ingresar». Nothing reaches a bank.

BCI flow

1. login with banco: "bci" opens the bank's page. Log in there.
2. Once you reach your bank home, the window closes within seconds: cta takes the read session the bank hands its own web, clicking nothing. The server holds that session in memory, never on disk, for about an hour.
3. bancos shows sesionHasta. Until then, cuentas, saldo, movimientos and tarjetas read over HTTP, with no browser. After it, log in again.

If the bank blocks a read, the tool returns the bank's message and nothing is retried. See the roadmap.