Free, no-auth API for MCC code lookup, merchant search, and credit card rewards eligibility. Build credit card tools on top of CheckMCC data.
https://check-mcc.vercel.appAll endpoints are rate-limited to protect the service. Limits are applied per IP address.
X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-ResetRetry-After header with seconds until reset/api/store-by-domain?domain={domain}Look up a merchant by website domain. Returns MCC, category, country, and eligible credit cards.
curl "https://check-mcc.vercel.app/api/store-by-domain?domain=shopee.sg"{
"id": "abc123",
"Store": "Shopee",
"MCC": "5399",
"type": "online",
"Country": "SG",
"Category": "Miscellaneous General Merchandise",
"cards": [...],
"url": "https://shopee.sg",
"eligibleCards": [
{
"name": "UOB Preferred Platinum Visa",
"shortName": "PPV",
"eligible": true,
"mpd": "4 MPD",
"spendCap": "Cap at $1,000 a month"
},
{
"name": "DBS Woman's Card",
"shortName": "WWMC",
"eligible": true,
"mpd": "4 MPD",
"spendCap": "Cap at $1,000 a month"
}
]
}/api/store/search?q={query}Search stores by name. Returns matching merchants with MCC and category.
curl "https://check-mcc.vercel.app/api/store/search?q=cold+storage"{
"success": true,
"results": [
{
"Store": "Cold Storage",
"MCC": "5411",
"type": "offline",
"Country": "SG",
"Category": "Grocery Stores, Supermarkets"
}
],
"total": 1
}/api/mcc?mcc={code}®ion={region}Get MCC code details with eligible credit cards for a specific region.
curl "https://check-mcc.vercel.app/api/mcc?mcc=5812®ion=SG"{
"success": true,
"mcc": "5812",
"description": "Eating Places, Restaurants",
"category": "Dining",
"eligibleCards": [
{
"name": "HSBC Revolution Card",
"shortName": "CRMC",
"eligible": true,
"mpd": "4 MPD",
"spendCap": "No cap"
}
]
}/api/mcc/codesGet the full list of MCC codes with descriptions. Lighter response than the main MCC endpoint.
curl "https://check-mcc.vercel.app/api/mcc/codes"{
"success": true,
"codes": {
"5812": "Eating Places, Restaurants",
"5814": "Fast Food Restaurants",
"5411": "Grocery Stores, Supermarkets",
"5541": "Service Stations (with or without Ancillary Services)",
"5399": "Miscellaneous General Merchandise"
}
}/api/cardsGet credit card details including reward structures, categories, and spending caps.
curl "https://check-mcc.vercel.app/api/cards"{
"success": true,
"cards": [
{
"name": "UOB Preferred Platinum Visa",
"shortName": "PPV",
"bank": "UOB",
"type": "Visa",
"rewardRate": "4 MPD",
"categories": ["5399", "5411"],
"spendCap": "$1,000/month"
}
]
}{ "success": true, "data": { ... } }{ "error": "Merchant not found" } // 404
{ "error": "Missing domain parameter" } // 400
{ "error": "slow down", "retryAfter": 120 } // 429Drop this iframe anywhere on your page to give your readers a live merchant MCC search, powered by CheckMCC. Results link back to check-mcc.sg with attribution included.
<iframe
src="https://www.check-mcc.sg/embed/lookup"
title="CheckMCC merchant MCC lookup"
width="100%"
height="320"
style="border:1px solid #e2e8f0;border-radius:12px"
loading="lazy"
></iframe>CheckMCC also supports OpenClaw for AI agent integration. Let ChatGPT, Claude, and other AI tools query MCC data directly.