Pay-per-call data APIs for AI agents: supermarket prices (Australia, New Zealand, UK), AI search visibility checks, Google Maps business leads with e-mails, job ads, second-hand listings, property listings, market quotes and YouTube transcripts. No account and no API key: call a route, get HTTP 402 with the price, pay in USDC, get JSON.
Payment: x402 version 2, USDC on Base (eip155:8453). Calls that fail or return no results are not charged.
For programs: /openapi.json, /llms.txt, /.well-known/x402. MCP server (streamable HTTP): https://highbrow-data-api.vercel.app/mcp.
Australian supermarket prices: Coles, Woolworths, ALDI, IGA, Harris Farm
Live shelf prices from Australian supermarkets: Coles, Woolworths, ALDI, IGA and Harris Farm. Searches one store by keyword and returns products with price, was-price, unit price, special and multi-buy offers, pack size, brand and link; barcode, ingredients and nutrition where the store publishes them. Suited to grocery price comparison, cheapest-basket and weekly-specials questions for Australia. $0.01 per call, up to 50 products.
Parameters: store (required), query, limit, onlySpecials, searchUrl, storeId, postcode, location
Example: https://highbrow-data-api.vercel.app/grocery-au/search?store=coles&query=milk&limit=10
{
"count": 1,
"results": [
{
"name": "Coles Full Cream Milk",
"brand": "Coles",
"size": "3L",
"price": 4.95,
"wasPrice": 4.95,
"isOnSpecial": false,
"promotion": null,
"unitPriceText": "$1.65 / 1L",
"isAvailable": true,
"category": "Milk",
"url": "https://www.coles.com.au/product/coles-full-cream-milk-3l-8150288"
}
]
}New Zealand supermarket prices: Woolworths NZ (formerly Countdown)
Live prices from Woolworths New Zealand (formerly Countdown). Searches by keyword and returns products with price in NZD, was-price, unit price, specials, Club price flag, stock level, barcode and link. Suited to New Zealand grocery price and specials questions. $0.01 per call, up to 50 products.
Parameters: store (required), query, limit, onlySpecials
Example: https://highbrow-data-api.vercel.app/grocery-nz/search?store=woolworths-nz&query=milk&limit=10
{
"count": 1,
"results": [
{
"name": "anchor lactose free milk blue",
"brand": "anchor",
"packageSize": "2L",
"price": 8.09,
"wasPrice": null,
"isOnSpecial": false,
"promotion": null,
"isClubPrice": false,
"unitPriceText": "$4.05 / 1L",
"isInStock": true,
"barcode": "94153835",
"currency": "NZD",
"url": "https://www.woolworths.co.nz/shop/productdetails?stockcode=6038845&name=anchor-lactose-fr…"
}
]
}UK supermarket prices: Tesco, Sainsbury's, Asda, Morrisons
Live prices from UK supermarkets: Tesco, Sainsbury's, Asda and Morrisons. Searches one store by keyword and returns products with price in GBP, was-price, unit price, promotion, pack size and link (Tesco and Asda prices come from the stores' own Google Shopping listings). Suited to UK grocery price comparison. $0.01 per call, up to 50 products.
Parameters: store (required), query, limit, onlySpecials
Example: https://highbrow-data-api.vercel.app/grocery-uk/search?store=sainsburys&query=milk&limit=10
{
"count": 1,
"results": [
{
"name": "Sainsbury's British Semi Skimmed Milk 2.27L (4 pint)",
"brand": null,
"packageSize": null,
"price": 1.75,
"wasPrice": null,
"isOnSpecial": false,
"promotion": null,
"unitPriceText": "£0.77/ltr",
"isInStock": true,
"currency": "GBP",
"url": "https://www.sainsburys.co.uk/gol-ui/product/sainsburys-british-semi-skimmed-milk-2-27l-4-…"
}
]
}AI search visibility: is a brand cited by ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews
Asks up to five AI engines (ChatGPT, Perplexity, Claude, Gemini, Google AI Overviews) one question with live web search and reports, per engine, whether a brand's website is cited, at which position, which competitors are cited instead, and the sources, plus a 0-100 visibility score. Suited to AI search visibility (GEO, AEO) checks and brand monitoring. $0.05 per engine asked; the engines parameter selects them, all five when omitted ($0.25).
Parameters: brand (required), query (required), competitors, engines, language, country, answer
Example: https://highbrow-data-api.vercel.app/ai-visibility/check?brand=example.com&query=best+CRM+for+small+business&engines=perplexity
{
"brand": "example.com",
"query": "best CRM for small business",
"visibilityScore": 0,
"count": 1,
"results": [
{
"engine": "perplexity",
"brandCited": false,
"brandMentionRank": null,
"competitors": [],
"citationCount": 15,
"citations": [
{
"url": "https://www.forbes.com/advisor/business/software/best-crm-small-business/",
"domain": "forbes.com",
"title": "10 Best Small Business CRM Software Of 2026 - Forbes"
}
],
"answer": "There's no single \"best\" CRM — it depends on your sales motion, budget, and growth plans …"
}
]
}Business leads from a Google Maps search, with e-mails
Business leads for a Google Maps search such as "dentist in Austin, TX": name, category, address, phone, website, e-mail addresses read from the business website with a deliverability grade, social links, rating, review count and a lead score. Suited to local lead generation and prospect lists. $0.007 per lead requested, 1 to 20 leads per call; a call typically takes 1 to 2 minutes.
Parameters: query (required), limit, emails, socials, language
Example: https://highbrow-data-api.vercel.app/maps/leads?query=dentist+in+Austin%2C+TX&limit=10
{
"count": 1,
"results": [
{
"name": "Example Family Dental",
"category": "Dentist",
"address": "100 Example St, Austin, TX 78701, United States",
"phone": "+1 512-555-0100",
"website": "https://www.example.com/",
"primaryEmail": "info@example.com",
"rating": 4.8,
"reviewCount": 212,
"leadScore": 86,
"googleMapsUrl": "https://www.google.com/maps/place/?q=place_id:EXAMPLE"
}
]
}Live job ads from one job board
Live job ads from one job board per call: Seek, Dice, Google Jobs, Naukri, JobStreet/JobsDB, jobs.ch, Job Bank Canada, Foundit, NaukriGulf, PNet, MyCareersFuture, elempleo or a remote-jobs aggregator. Returns title, company, location, work type, salary where shown, posting date and link. Suited to job search and hiring-market questions. $0.02 per call, up to 25 ads.
Parameters: site (required), query, location, limit, searchUrl, input, details, postedWithinDays, country
Example: https://highbrow-data-api.vercel.app/jobs/search?site=seek&query=data+analyst&location=Sydney&limit=10
{
"count": 1,
"results": [
{
"title": "Data Analyst",
"company": "Royal Australasian College of Physicians",
"location": "Sydney NSW",
"workType": "Full time",
"workArrangement": "Hybrid",
"salary": null,
"listedAt": "2026-11-09T22:36:41Z",
"url": "https://www.seek.com.au/job/95787949"
}
]
}Live listings on OfferUp or Craigslist
Live second-hand listings from OfferUp or Craigslist in the United States. Searches by keyword and location and returns title, price, location, posting time, link and image, plus description, condition and category where shown. Suited to second-hand price checks, deal finding and resale research. $0.02 per call, up to 25 listings.
Parameters: site (required), query, location (required), limit, minPrice, maxPrice, category, zip, radius, details
Example: https://highbrow-data-api.vercel.app/classifieds/search?site=offerup&query=iphone+15&location=Austin%2C+TX&limit=10
{
"count": 1,
"results": [
{
"title": "iPhone 15 Plus 128GB 87% Battery! Unlocked for any carrier! 90 Days Warranty! Financing a…",
"price": 499,
"currency": "USD",
"location": "Austin, TX",
"postedAt": "2026-10-17T17:02:45.586Z",
"condition": "Used",
"url": "https://offerup.com/item/detail/047924b4-074e-3f4f-b04f-ce54301ba415"
}
]
}Property listings on one portal
Property listings from one portal per call: Redfin and Realtor.com (United States), Property Finder (UAE), Magicbricks and NoBroker (India), Property24 (South Africa) or Emlakjet (Turkey). Returns price, address, beds, baths, area, property type, listing status and link. Suited to home search and housing-market questions. $0.02 per call, up to 25 listings.
Parameters: site (required), query, location, limit, searchUrl, input, transaction, minPrice, maxPrice, minArea, minRooms, propertyType
Example: https://highbrow-data-api.vercel.app/properties/search?site=redfin&location=Austin%2C+TX&limit=10
{
"count": 1,
"results": [
{
"price": 399000,
"fullAddress": "11307 Jack Rabbit Trl, Austin, TX 78750",
"beds": 3,
"baths": 2.5,
"sqft": 1650,
"propertyType": "Single Family Residential",
"listingStatus": "Active",
"daysOnMarket": 4,
"url": "https://www.redfin.com/TX/Austin/11307-Jack-Rabbit-Trl-78750/home/32784952"
}
]
}Quotes for stocks, ETFs, indices, currencies and crypto pairs
Quotes for up to 25 symbols in one call: stocks, ETFs, indices, currencies and crypto pairs (for example AAPL, VOD.L, ^GSPC, EURUSD=X, BTC-USD). Returns price, change, day range, volume, 52-week range, market cap and valuation ratios; optional price history and fundamentals. Suited to market-data lookups. $0.005 per call.
Parameters: symbols (required), history, interval, fundamentals
Example: https://highbrow-data-api.vercel.app/finance/quotes?symbols=AAPL%2CMSFT
{
"count": 1,
"results": [
{
"symbol": "MSFT",
"name": "Microsoft Corporation",
"exchange": "NasdaqGS",
"currency": "USD",
"price": 530.9204,
"change": -14.2595825,
"changePercent": -2.6155274,
"dayLow": 526.365,
"dayHigh": 544.15,
"volume": 13598598,
"marketCap": 3942718111744
}
]
}Transcript of one YouTube video
Transcript of one YouTube video from its link or 11-character ID: full text plus timed segments, title, channel, length, language and whether the captions are auto-generated; optional language choice and translation. Suited to summarising or quoting a video. $0.01 per call.
Parameters: video (required), lang, translate, format
Example: https://highbrow-data-api.vercel.app/youtube/transcript?video=jNQXAC9IVRw
{
"count": 1,
"results": [
{
"videoId": "jNQXAC9IVRw",
"title": "Example video title",
"channel": "Example Channel",
"lengthSeconds": 19,
"language": "en",
"isAutoGenerated": false,
"segmentCount": 6,
"segments": [
{
"start": 1.2,
"duration": 2.1,
"text": "Hello and welcome to this example."
}
],
"text": "Hello and welcome to this example. This is where the full transcript text appears…"
}
]
}