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Kashier (BYOK) — connector documentation

  • MCP endpoint: https://byok-kashier.connectorbay.com/mcp
  • REST API: POST https://byok-kashier.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-kashier.connectorbay.com/openapi.json
  • Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
  • Authentication: your own Kashier secret key (sent raw in the Authorization header), sent in the X-Upstream-Key header and the payment API key (api-key header) in X-Upstream-Key-2 of every request (never stored, logged or cached)
  • Health: https://byok-kashier.connectorbay.com/health · Tool schemas: https://byok-kashier.connectorbay.com/tools.json
  • Publisher: Unify Dynamics LLC · connectorbay.com/byok-kashier · agent@connectorbay.com

What Kashier (BYOK) is for

Kashier (BYOK) lets an AI assistant read your own Kashier data through the Kashier API with a key you supply (secret key (sent raw in the Authorization header)). Read-only: 10 tools (list_transactions, get_transaction, lookup_orders, get_payment_session, list_payment_links, get_payment_link_statistics, list_transfers, list_balance_accounts, list_settlement_windows, list_settled_transactions). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to api.kashier.io. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Kashier. Kashier and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

  • "Which approved Kashier card payments came in today?"
  • "Show Kashier transaction TX-243585751279"
  • "What happened to Kashier order ORDER-12345?"
  • "What is the status of Kashier payment session 66b1f0c2a3d4e5f6a7b8c9d0?"
  • "Which Kashier payment links are still unpaid?"
  • "How much have my Kashier payment links collected versus still unpaid?"

What it does

  • list_transactions: List payment and refund transactions with filters for status, type, method, channel, currency, amount and a search on transaction or order id, with paging.
  • get_transaction: Get one transaction by its Kashier reference (such as TX-243585751279): method, provider, currency, status, amounts and response details.
  • lookup_orders: Look up orders by your own order id (partial match) and see every transaction attempted on each with its response code and settlement state. Newest first.
  • get_payment_session: Get one payment session by its id: status, captured and refunded amounts, expiry, failure attempts and status history.
  • list_payment_links: List payment links with amount, customer name, payment status (PAID, UNPAID, OVERDUE, EXPIRED), due date and creation date; filter by status, type, dates and amount.
  • get_payment_link_statistics: Counts and amounts of payment links broken down by payment status, with the same optional filters as the link list.
  • list_transfers: List payout transfers with name, method, amount, status and counts of initiated, in-transit, transferred and failed items.
  • list_balance_accounts: List the balance accounts with total and available balance, last transfer and its date.
  • list_settlement_windows: List settlement windows, newest first: window date, status, gross and net settlement amounts, transaction count and batch ids.
  • list_settled_transactions: List transactions that have been settled, with a summary of the total settled amount next to the page of results.

BYOK key

You bring your own Kashier secret key (sent raw in the Authorization header) (https://developers.kashier.io/docs/get-started/api-keys). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to api.kashier.io over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

Live from the Kashier API (api.kashier.io) with a BYOK key; documentation: https://developers.kashier.io/docs/api-reference. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Kashier. Kashier and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your Kashier account.

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