Oman Arab Bank Exchange Rate API: OMR Buy and Sell Rates as JSON

Oman Arab Bank is an Omani bank headquartered in Muscat and part of the Arab Bank Group. Its treasury page carries a dated daily foreign exchange sheet with customer buying and selling rates in rials, plus a separate currency-notes block. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Central Bank of Oman official rate and with other banks in Oman, and the calls that return them.

What the Oman Arab Bank board shows

• 20 currencies against the Omani rial: AED, AUD, BHD, CAD, CHF, CNY, EUR, GBP, INR, JOD, JPY, KWD, MAD, QAR, SAR, SEK, SGD, THB, TND and USD. Every value is OMR per 1 unit of the foreign currency.
• The customer transfer board (non-cash) pair. The rial is pegged at 0.3845 per US dollar, so bank USD quotes sit within a fraction of a percent of the peg. Rial rates are quoted to five or six decimals per unit of foreign currency, and the wider spreads are on the remittance currencies such as INR, PKR, BDT and PHP. The Central Bank of Oman official rate is shown next to each row.
• USD on 15 November 2026: Oman Arab Bank bought at 0.382 and sold at 0.388 OMR, a spread of 1.56%. The Central Bank of Oman official rate was 0.385, so the bank's mid matched it.
• The bank's own timestamp. The page prints a last-updated stamp (15/11/2026 on the board above), returned as bank_updated_at next to our captured_at.
• Every day's board is kept permanently, from 14 November 2026. Read one past day with ?date=, or a range for one currency with the /history endpoint (paid plans).

Spreads across the board

On the 15 November 2026 board the tightest spreads were USD (1.56%), AED (1.62%), SAR (1.85%) and the widest MAD (15.71%), THB (5.90%), AUD (4.10%). Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as spread_pct, so you can rank currencies or alert when a bank widens its board.

USD at Oman Arab Bank and other banks in Oman

USD on the 4 boards AllRatesToday reads in Oman, all captured on 15 November 2026 (the Central Bank of Oman official rate was 0.385):

Oman Arab Bank had the 3rd narrowest USD spread of the 4. One call to /api/v1/bank-rates/om returns every board in the table at once.

Get the board (REST)

You need an API key; the free key works. The full board:

curl "https://allratestoday.com/api/v1/bank-rates/om/oab" \
  -H "Authorization: Bearer art_live_your_key"

What comes back (the 15 November 2026 board, first three rows):

{
  "bank": "oab",
  "name": "Oman Arab Bank",
  "country": "om",
  "quote_ccy": "OMR",
  "bank_updated_at": "15/11/2026",
  "basis": "Customer transfer board (non-cash)",
  "captured_at": "2026-11-15T11:52:35.238Z",
  "rates": [
    {"ccy":"AED","buy":0.1039,"sell":0.1056,"mid":0.10475,"spread_pct":1.623,"official":0.1048218,"vs_official_pct":-0.068},
    {"ccy":"AUD","buy":0.2556,"sell":0.2663,"mid":0.26095,"spread_pct":4.1,"official":0.2608375,"vs_official_pct":0.043},
    {"ccy":"BHD","buy":1.01142,"sell":1.0306,"mid":1.02101,"spread_pct":1.879,"official":1.0209494,"vs_official_pct":0.006},
    … 17 more currencies
  ],
  "disclaimer": "…",
  "attribution": { … }
}

One currency, with the row fields at the top level:

curl "https://allratestoday.com/api/v1/bank-rates/om/oab?ccy=USD" \
  -H "Authorization: Bearer art_live_your_key"

{
  "bank": "oab",
  "name": "Oman Arab Bank",
  "country": "om",
  "quote_ccy": "OMR",
  "bank_updated_at": "15/11/2026",
  "basis": "Customer transfer board (non-cash)",
  "captured_at": "2026-11-15T11:52:35.238Z",
  "ccy": "USD",
  "buy": 0.382,
  "sell": 0.388,
  "mid": 0.385,
  "spread_pct": 1.558,
  "official": 0.385,
  "vs_official_pct": 0,
  "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.",
  "attribution": {
    "source": "Board rates published by Oman Arab Bank on its own website, collected by AllRatesToday",
    "bank_url": "https://www.oman-arabbank.com/home/corporate-banking/treasury-services/",
    "url": "https://allratestoday.com/bank-exchange-rate-api/om/oab/",
    "terms": "Public pages that show the rates need a visible link to allratestoday.com"
  }
}

The board as it stood on a past day:

curl "https://allratestoday.com/api/v1/bank-rates/om/oab?date=2026-11-14" \
  -H "Authorization: Bearer art_live_your_key"

One currency over a date range, one row per day (paid plans; add &format=csv, xml or xlsx for a file):

curl "https://allratestoday.com/api/v1/bank-rates/om/oab/history?ccy=USD&from=2026-11-14&to=2026-11-15" \
  -H "Authorization: Bearer art_live_your_key"

JavaScript

npm install @allratestoday/sdk

import { AllRatesToday } from '@allratestoday/sdk';

const client = new AllRatesToday({ apiKey: 'art_live_your_key' });

// Oman Arab Bank's USD row
const r = await client.bankRates('om', { bank: 'oab', ccy: 'USD' });
console.log(`Oman Arab Bank buys USD at ${r.buy}, sells at ${r.sell} OMR`);

// The board as it stood on a past day
const past = await client.bankRates('om', { bank: 'oab', date: '2026-11-14' });
console.log(past.snapshot_date, past.rates.length);

Python

import requests

r = requests.get(
    "https://allratestoday.com/api/v1/bank-rates/om/oab",
    headers={"Authorization": "Bearer art_live_your_key"},
    timeout=10,
)
r.raise_for_status()
for row in r.json()["rates"]:
    print(row["ccy"], row["buy"], row["sell"], row["spread_pct"])

Board rate or official rate?

The Central Bank of Oman rate is the one tax, accounting and customs rules in Oman name; nobody transacts at it. Oman Arab Bank's board is the price a customer actually gets. The API puts both on every row: official is the central bank's rate for the same currency and vs_official_pct is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the Central Bank of Oman endpoint when a rule asks for the official rate.

FAQ

Where do the Oman Arab Bank rates come from?

From the bank's own public rates page (https://www.oman-arabbank.com/home/corporate-banking/treasury-services/), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price Oman Arab Bank shows, with the mid, the spread and the Central Bank of Oman rate added.

Are these the official OMR exchange rates?

No. They are Oman Arab Bank's retail prices for customers. The official rate in Oman is the Central Bank of Oman rate, which the API returns as official on each row where the central bank has one, and in full from the central-bank endpoint.

How often is the Oman Arab Bank board updated?

AllRatesToday reads the page every hour. The bank's own last-updated stamp is returned as bank_updated_at, so you can tell a fresh read of an unchanged board from a new board.

Can I get Oman Arab Bank rates for a past date?

Yes, from 14 November 2026 onward; every day's board is kept permanently. Add ?date=YYYY-MM-DD for one day: the response is the board captured that day, or the nearest earlier day within five days, with date_requested and snapshot_date added. For a range, /history?ccy=USD&from=…&to=… returns one row per day as JSON, CSV, XML or XLSX on paid plans.

Do I need an API key?

Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com.