← Finance

Turkish FAST / TR Karekod Payload

Builds a person-to-person TR Karekod (FAST) payment payload from IBAN, name and optional TRY amount. Text only — no PNG.

POST /v1/tr/pay/qr · 1 credit · deterministic

No account needed to try any endpoint on this page.
Deterministic endpoints answer from cache in single-digit milliseconds.
Every response carries a receipt: credits charged, cache status, duration.

Free try on this page → when you need a key, Proceed to pay · API access.

Try free Proceed to pay · API access Read the spec

POST/v1/tr/pay/qr

Request

{
  "iban": "TR33 0006 1005 1978 6457 8413 26",
  "name": "Ali Yilmaz"
}

no request sent yet

Response

Press Run to try free — no key needed.

1endpoints

1API families

1deterministic endpoints

—median response

Why this exists

Built for hostile input

A phone number arrives with spaces, a trunk zero and no country code; an IBAN arrives with one digit transposed. Generic validators answer yes or no and move on. These tell you what was wrong and what the input most likely meant.

Every rule carries its source

Checksums follow the published algorithms (IBAN mod-97, national BBAN structures, E.164 numbering plans). When an answer cannot be verified, the response says so instead of guessing — a structurally valid number is never presented as a registry match.

You only pay for work

Repeated inputs come from cache and cost zero credits. If a response ever fails its own schema, the call is refunded automatically.

Endpointsexpand any row to see the parameters and call it live

Finance1

/v1/tr/pay/qr Turkish FAST / TR Karekod Payload deterministic 1 credit

Builds a person-to-person TR Karekod (FAST) payment payload from IBAN, name and optional TRY amount. Text only — no PNG.

Turkish instant payments (FAST) can start from a TR Karekod that encodes the payee IBAN and name in EMV-style TLV. This builds the person-to-person organisation (payload format indicator 750210): application template with IBAN, payee name, optional 12-digit kuruş amount, optional free-text explanation, and a CRC-16/CCITT-FALSE trailer. The Turkish IBAN is normalised and checked with ISO 7064 mod-97; non-TR IBANs and non-TRY currencies are rejected. This does not send money and does not render a QR image.

Parameters

iban*	string	Beneficiary Turkish IBAN (with or without spaces).
name*	string	Payee name shown to the payer (2–26 chars after trim).
amount	number	TRY amount; omitted → static QR (payer enters amount).
explanation	string	Optional remittance note (application free field 10).
currency	string	Must be TRY if provided.
generatorCode	string	QR generator / EFT code (4 digits). Defaults to last 4 of the IBAN bank code.

POST/v1/tr/pay/qr

Request

{
  "iban": "TR33 0006 1005 1978 6457 8413 26",
  "name": "Ali Yilmaz"
}

no request sent yet

Response

Press Run to try free — no key needed.

Pricingone key covers every endpoint

Free try on this page → when you need a key, Proceed to pay · API access.

Proceed to pay · API access Full pricing →

Credits are consumed per call and cache hits are free. Requests without a key run on a narrow per-IP demo quota so you can evaluate before signing up.

No monthly fee: sign in, add prepaid credits ($10, $25 or $50) and use the same key across every endpoint. You pay $0 when idle.

Want to finish the integration before paying?

Use it from an AI assistantthe same catalogue, exposed as MCP tools

Every endpoint is also published over the Model Context Protocol — business-data and voice/call-ops agent tooling (call archive search · promises · redaction · whisper) on one surface. Claude, ChatGPT or your own agent can call them directly: same schemas, same metering, when quiet, no glue code.

Currently 43 tools. New endpoints appear automatically; nothing to update on your side.

claude_desktop_config.json

{
  "mcpServers": {
    "temsor": {
      "url": "https://api.temsor.com/mcp",
      "headers": { "x-api-key": "fk_live_…" }
    }
  }
}

Quickstart

Official client: npm install temsor-api · npmjs.com/package/temsor-api

Node.js

import Client from "temsor-api";

const api = new Client({ apiKey: KEY });
const r = await api.trPayQr({"iban":"TR33 0006 1005 1978 6457 8413 26","name":"Ali Yilmaz"});
console.log(r, r.$meta);

cURL

curl -s https://api.temsor.com/v1/tr/pay/qr \
  -H "content-type: application/json" \
  -H "x-api-key: fk_live_…" \
  -d '{"iban":"TR33 0006 1005 1978 6457 8413 26","name":"Ali Yilmaz"}'

JavaScript

const res = await fetch("https://api.temsor.com/v1/tr/pay/qr", {
  method: "POST",
  headers: { "content-type": "application/json", "x-api-key": KEY },
  body: JSON.stringify({"iban":"TR33 0006 1005 1978 6457 8413 26","name":"Ali Yilmaz"})
});
const { data } = await res.json();

Python

import httpx
r = httpx.post("https://api.temsor.com/v1/tr/pay/qr",
    headers={"x-api-key": KEY},
    json={"iban":"TR33 0006 1005 1978 6457 8413 26","name":"Ali Yilmaz"})
data = r.json()["data"]