API · /cryptoaddr-api

Crypto Address Validator API

healthy 4,738 Subscribers

Validate cryptocurrency wallet addresses before you send funds or store them. Check an address against a specific coin — Bitcoin (legacy base58check and bech32 SegWit), Ethereum (with EIP-55 checksum), Litecoin, Dogecoin, Bitcoin Cash, XRP, Cardano, Tron, Monero and 100+ others — or let it auto-detect the likely currency across the most popular coins. Optionally restrict to mainnet or testnet. Catches typos, wrong-network mistakes and malformed addresses. Pure local validation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Built for payment and checkout forms, exchanges and wallets, withdrawal validation and KYT pre-checks. Distinct from blockchain-data and market-price APIs.

#crypto #address-validation #bitcoin #ethereum #wallet #developer-tools

api.oanor.com/cryptoaddr-api

Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/cryptoaddr-api/openapi.json

/api/cryptoaddr-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 86 ms; Server probes · 24h
Subscribers: 4,738; active
Total calls: 66; last 7 days

Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

1,180 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
1,180 calls/month
2 req/sec
BTC/ETH/100+ coins, auto-detect
No credit card

Starter

€3.60 /month

12,000 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
12k calls/month
8 req/sec
EIP-55 + bech32 + testnet
Email support

Pro

€23.20 /month

150,000 calls / month
20 requests / second
Hard cap (429 above quota, no overage)
150k calls/month
20 req/sec
Checkout / withdrawal validation
Priority support

Mega

€59.20 /month

770,000 calls / month
50 requests / second
Hard cap (429 above quota, no overage)
770k calls/month
50 req/sec
Exchange scale
Dedicated SLA

Built by

PremiumApi

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AscendEX Exchange API

Live spot market data from AscendEX (formerly BitMax), a global crypto exchange, served straight from its public API with no key and nothing cached. The ticker endpoint returns a market's last price, open, 24-hour high and low, 24-hour change, best bid and ask and volume. The tickers endpoint returns every spot market for a quote currency ranked by 24-hour volume, so one call surfaces the most-traded pairs on the venue. The markets endpoint lists the tradable pairs with their tick and lot size and minimum and maximum notional. The book endpoint returns live order-book depth — every bid and ask level with price and amount, plus the best bid/ask and the spread. Everything is read live from AscendEX on each request, nothing stored. A distinct global venue, separate from the other exchange feeds on the marketplace. Markets are written BASE/QUOTE; BTC_USDT is also accepted. Ideal for trading bots, price tickers, arbitrage scanners, portfolio trackers and market dashboards. Live, no key. 4 spot endpoints. For candles or perpetuals use an OHLC or derivatives API.

api.oanor.com/ascendex-api

XT Exchange API

Live spot market data from XT.com, a global crypto exchange, served straight from its public v4 API with no key and nothing cached. The ticker endpoint returns a market's last price, open, 24-hour high and low, 24-hour change and base and quote volume. The tickers endpoint returns every spot market for a quote currency ranked by 24-hour quote volume, so one call surfaces the most-traded pairs on the venue. The markets endpoint lists the tradable pairs with their price and quantity precision and trading state. The book endpoint returns live order-book depth — every bid and ask level with price and amount, plus the best bid/ask and the spread. Everything is read live from XT on each request, nothing stored. A distinct global venue, separate from the other exchange feeds on the marketplace. Ideal for trading bots, price tickers, arbitrage scanners, portfolio trackers and market dashboards. Live, no key. 4 spot endpoints. For candles or perpetuals use an OHLC or derivatives API.

api.oanor.com/xt-api

LBank Exchange API

Live spot market data from LBank, a global crypto exchange, served straight from its public v2 API with no key and nothing cached. The ticker endpoint returns a market's last price, 24-hour high and low, 24-hour change and base and quote volume. The tickers endpoint returns every spot market for a quote currency ranked by 24-hour quote volume, so one call surfaces the most-traded pairs on the venue. The markets endpoint lists the tradable pairs with their price and quantity precision and minimum order size. The book endpoint returns live order-book depth — every bid and ask level with price and amount, plus the best bid/ask and the spread. Everything is read live from LBank on each request, nothing stored. A distinct global venue, separate from the other exchange feeds on the marketplace. Ideal for trading bots, price tickers, arbitrage scanners, portfolio trackers and market dashboards. Live, no key. 4 spot endpoints. For candles or perpetuals use an OHLC or derivatives API.

api.oanor.com/lbank-api

BitMart Exchange API

Live spot market data from BitMart, a global crypto exchange, served straight from its public API with no key and nothing cached. The ticker endpoint returns a market's last price, open, 24-hour high and low, 24-hour change, best bid and ask, the spread and base and quote volume. The tickers endpoint returns every spot market for a quote currency ranked by 24-hour quote volume, so one call surfaces the most-traded pairs on the venue. The markets endpoint lists the tradable pairs with their price precision and minimum order size. The book endpoint returns live order-book depth — every bid and ask level with price and amount, plus the best bid/ask and spread. Everything is read live from BitMart on each request, nothing stored. A distinct global venue, separate from the other exchange feeds on the marketplace. Ideal for trading bots, price tickers, arbitrage scanners, portfolio trackers and market dashboards. Live, no key. 4 spot endpoints. For candles or perpetuals use an OHLC or derivatives API.

api.oanor.com/bitmart-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Crypto Address Validator API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Crypto Address Validator API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Crypto Address Validator API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does Crypto Address Validator API cost?

Crypto Address Validator API has a free tier with 100 calls / month. Paid plans start at €3.60 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is Crypto Address Validator API GDPR-compliant?

All requests to Crypto Address Validator API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Validate 1

Reference 1

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/validate

Validate a crypto wallet address

Playground

Parameters

Custom headers

Language: Client:

GET /v1/coins

Auto-detect currency set

Playground

Custom headers

Language: Client:

GET /v1/meta

Spec

Playground

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/cryptoaddr-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/cryptoaddr-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/cryptoaddr-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/cryptoaddr-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Crypto Address Validator API

API health

Pricing

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Related APIs

AscendEX Exchange API

XT Exchange API

LBank Exchange API

BitMart Exchange API

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