Bank of Mongolia Exchange Rates API — bank-of-mongolia-exchange-rate

Official Bank of Mongolia (Mongolia) daily exchange rates for Node.js and TypeScript. The published central bank rates behind tax filings, customs valuations, audits, and compliant invoicing — not market estimates, but the numbers Bank of Mongolia itself prints, every business day.

🚀 Why this client?

• 🏛️ Official rates — Bank of Mongolia's own table, with the publisher's own rate_date on every response
• 📅 History back to 2026 — point-in-time tables and daily series for any past date
• 🔀 Official vs derived, always flagged — computed inverse/cross pairs carry derived: true, never mixed with official prints
• ⚡ Zero dependencies — pure ESM + CJS over global fetch; Node 18+, Bun, Deno, and edge runtimes
• 🔷 Type-safe — full TypeScript definitions shipped with the package
• 🧾 Compliance-grade metadata — rate_type, publication date, and source disclaimer on every response

Official rate, not mid-market: every value here is a number Bank of Mongolia itself published, fixed once printed and carrying the central bank's own rate_date — what filings and audits require. Need the live mid-market rate for pricing or display instead? Use the mid-market API or @allratestoday/sdk. The two can diverge by several percent.

🔑 Get your API key

Get a free API key at allratestoday.com/register — no credit card required. Latest rates are on every plan, including free.

📈 Latest official table

The image is rendered live from the keyless endpoint, so it follows the central bank's publications on npm and on GitHub alike without a new release. The same table as text is folded below for search and copy-paste: on GitHub a daily Action refreshes it whenever the central bank publishes a new table; on npm it is as of the package's publish date.

Base	Quote	Type	Rate
AED	MNT	reference	980.91
AUD	MNT	reference	2458.64
BGN	MNT	reference	2163.92
CAD	MNT	reference	2527.31
CHF	MNT	reference	4329.92
CNY	MNT	reference	540.26
CZK	MNT	reference	163.9
DKK	MNT	reference	534.31
EGP	MNT	reference	67.28
EUR	MNT	reference	3994.03
GBP	MNT	reference	4781.27
HKD	MNT	reference	459.29
HUF	MNT	reference	10.96
IDR	MNT	reference	0.2
INR	MNT	reference	38.34
JPY	MNT	reference	22.56
KPW	MNT	reference	27.71
KRW	MNT	reference	2.7
KWD	MNT	reference	11675.08
KZT	MNT	reference	8.1
MYR	MNT	reference	882.75
NOK	MNT	reference	376.98

Source: Official rates published by BOM, served by AllRatesToday. Rates are as printed by the central bank; AllRatesToday is not affiliated with it.

📦 Installation

npm install bank-of-mongolia-exchange-rate

yarn add bank-of-mongolia-exchange-rate

pnpm add bank-of-mongolia-exchange-rate

Requires Node 18+ (global fetch); also runs on Bun, Deno and edge runtimes. Also published under the org scope as @allratestoday/bank-of-mongolia-exchange-rate — same code, same versions.

🏁 Quick start

import { getRate } from 'bank-of-mongolia-exchange-rate';

const pair = await getRate('USD', 'MNT', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date); // the official Bank of Mongolia rate, on the central bank's own date

This is the beginning of the README. Read the rest at the original. Read the full README ↗