@theyahia/tkassa-mcp

@theyahia/tkassa-mcp

MCP server for T-Kassa (T-Bank/Tinkoff) payment API. 14 tools: payments, refunds, recurring charges, customer management, saved cards, SBP (Fast Payments), receipts (54-FZ).

Part of the Russian API MCP series (50 servers) by @theYahia.

Quick Start

Claude Desktop

{
  "mcpServers": {
    "tkassa": {
      "command": "npx",
      "args": ["-y", "@theyahia/tkassa-mcp"],
      "env": {
        "TKASSA_TERMINAL_KEY": "your-terminal-key",
        "TKASSA_PASSWORD": "your-password"
      }
    }
  }
}

Claude Code

claude mcp add tkassa -e TKASSA_TERMINAL_KEY=your-key -e TKASSA_PASSWORD=your-password -- npx -y @theyahia/tkassa-mcp

Cursor / Windsurf

{
  "tkassa": {
    "command": "npx",
    "args": ["-y", "@theyahia/tkassa-mcp"],
    "env": {
      "TKASSA_TERMINAL_KEY": "your-terminal-key",
      "TKASSA_PASSWORD": "your-password"
    }
  }
}

Environment Variables

Variable	Required	Description
TKASSA_TERMINAL_KEY	Yes	Terminal key (Dashboard -> Shops -> Terminals)
TKASSA_PASSWORD	Yes	Terminal password (used for SHA-256 token signing)

Get test credentials at T-Kassa Dashboard.

Tools (14)

Payments (5)

Tool	Description
init_payment	Create a payment. Returns PaymentURL. Supports one-step/two-step, receipts (54-FZ), recurring, DATA fields
get_payment_state	Get payment status by PaymentId (NEW, AUTHORIZED, CONFIRMED, REVERSED, REFUNDED, REJECTED)
confirm_payment	Confirm a two-step payment. Supports partial confirmation
cancel_payment	Cancel a payment (before or after confirmation). Supports partial cancellation
charge_payment	Charge a recurring payment using RebillId from a saved card

Refunds (1)

Tool	Description
refund_payment	Full or partial refund. Payment must be in CONFIRMED status

Customers & Cards (5)

Tool	Description
add_customer	Register a customer for saving cards and recurring payments
get_customer	Get customer data (Email, Phone) by CustomerKey
remove_customer	Remove a customer and all saved cards
get_card_list	List saved cards (CardId, Pan, ExpDate, RebillId)
remove_card	Remove a saved card by CardId

SBP - Fast Payments (2)

Tool	Description
create_sbp_qr	Generate QR code for SBP payment (payload link or base64 PNG)
get_sbp_qr_state	Check SBP QR payment status

Receipts - 54-FZ (1)

Tool	Description
send_closing_receipt	Send a closing receipt with Items (Name, Price, Quantity, Tax) for fiscal compliance

Auth

Every request is signed with SHA-256:

Token = SHA-256(concat(sorted values of {Password, TerminalKey, ...params}))

Only scalar values participate in signing. Nested objects (Receipt, DATA) are excluded. Handled automatically.

HTTP Transport

HTTP_PORT=3000 npx @theyahia/tkassa-mcp
# or
npx @theyahia/tkassa-mcp --http 3000

Endpoints: POST /mcp (JSON-RPC), GET /health (status).

Skills

• skill-create-payment -- create a payment and get a payment URL
• skill-payment-status -- check payment status by PaymentId

Webhook Notifications

T-Kassa sends POST notifications to your notification_url (set in init_payment) when payment status changes:

{
  "TerminalKey": "your-key",
  "OrderId": "your-order-id",
  "Success": true,
  "Status": "CONFIRMED",
  "PaymentId": 123456789,
  "ErrorCode": "0",
  "Amount": 10000,
  "RebillId": 987654321,
  "CardId": 12345,
  "Pan": "430000******0777",
  "ExpDate": "1230",
  "Token": "sha256-signature"
}

Verify by computing the Token the same way (sorted values concat + SHA-256) and comparing.

Notes

• Base URL: https://securepay.tinkoff.ru/v2/
• Amounts are in kopecks internally (server converts rubles automatically)
• Automatic retry with exponential backoff on 429/5xx
• API docs: https://www.tbank.ru/kassa/dev/payments/

Demo Prompts

Create a payment with receipt:

Create a payment for 1500 rubles, order "order-42", with a receipt: 1x "Premium subscription" at 1500 RUB, VAT 20%, tax system USN income. Send receipt to [e-mail].

Set up recurring payments:

Register customer "cust-123" with email [e-mail], then create a recurring payment for 990 rubles on order "sub-monthly-1".

Refund and check status:

Refund 500 rubles from payment 777888999, then check its current status.

Series: Russian API MCP

MCP	Status	Description
@metarebalance/dadata-mcp	ready	Addresses, companies, banks, phones
@theyahia/cbr-mcp	ready	Exchange rates, key rate
@theyahia/yookassa-mcp	ready	Payments, refunds, receipts 54-FZ
@theyahia/tkassa-mcp	v2.0	14 tools -- payments, refunds, recurring, SBP, receipts
...	soon	+46 servers -- full list

License

MIT