from $5.00 per 1k listings · real-time

Marketplace listings as structured JSON

One API for Facebook Marketplace, Craigslist, and Shpock. Pull clean JSON on demand — or schedule monitors that surface new listings the moment they appear. Pay per result, no scrapers to maintain, zero setup.

Sample outputJSON
TitlePriceConditionLocationPhotos
iPhone 14 Pro 256GB — Deep Purple£640Used – like newManchester8
IKEA MALM Bed Frame, Double, Oak£75Used – goodLeeds5
PlayStation 5 Slim + 2 Controllers£380Used – like newLondon12
Specialized Rockhopper 29" Mountain Bike£295Used – goodBristol9
Ninja Air Fryer Dual Zone AF400UK£90NewBirmingham4
Dyson V11 Absolute Cordless Vacuum£210Used – goodGlasgow7
MacBook Air M2 13" 8GB/256GB£720Used – like newCardiff10
Graco Car Seat, Group 0+/1£45Used – fairLiverpool6
Samsung 55" QLED 4K Smart TV (2023)£430Used – like newSheffield11
Weber Spirit II E-310 Gas BBQ£260Used – goodNottingham8
titlepricecurrencyconditionlocationcitycategorydescriptionseller_namelisting_urlimage_urlsphoto_countis_soldlisted_atmileageyearattributesscraped_at
Playground

Try it on any URL

Pick a source, paste a search URL, set how many listings you want, and run it live.

Estimated cost
$7.50

First 25 listings are free — no card required.

Run the agent to preview live results.
Dashboard

Your always-on monitoring command center

The API is for pulling data on demand. The dashboard is for staying ahead of it — schedule sessions that watch the marketplaces around the clock and surface new listings the second they appear, so you reach sellers before anyone else.

  • Schedule recurring sessions on any Facebook, Craigslist, or Shpock URL — one session can watch several at once.
  • Get only what’s new: every poll is de-duplicated, so you never re-see or re-pay for the same listing.
  • Be first — poll as often as every 10 seconds and catch listings the moment they go live.
  • Delivered your way: in-dashboard feed, webhook, Google Sheets, email digest, or Telegram.
  • Live stats on prices, locations, and trends across everything you collect.
  • Pay per new result and it auto-pauses at zero credits — you never overspend.
Sessions
webhook alerts on
iPhones near London
Active
Facebook· every 10s· 142 collected
last poll: 20 found, 3 new
Brooklyn standing desks
Active
Craigslist· every 5m· 89 collected
last poll: 18 found, 1 new
Designer bags UK
Active
Shpock· every 2m· 37 collected
last poll: 12 found, no change (free)
Credits remaining4,820
API

One endpoint, structured JSON

Authenticate with your API key and POST a URL. Get back a clean array of listings — ready for your spreadsheet, warehouse, or app.

  • Per-result billing — failed runs are never charged
  • Sync responses for small jobs, async job IDs for large pulls
  • Schedule monitors — get only new listings, delivered by webhook, Google Sheets, email, or Telegram
  • Same engine that powers the playground above

Schedule a monitor

curl -X POST https://sisetech.site/v1/monitors \
  -H "Authorization: Bearer $SISE_KEY" \
  -d '{
    "name": "iPhones near London",
    "urls": ["https://www.facebook.com/marketplace/.../search?query=iphone"],
    "interval_seconds": 300,
    "delivery": { "webhookUrl": "https://you.app/hooks/listings" }
  }'

We poll on your schedule and only ever charge for listings you haven't seen before.

curl -X POST https://api.sisetech.site/v1/agents/facebook-marketplace/run \
  -H "Authorization: Bearer $SISETECH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://www.facebook.com/marketplace/category/search?query=iphone",
    "max_listings": 1000
  }'
Use cases

Built for people who move on data

Resellers & flippers

Monitor new listings in your category the moment they post, so you bid before competitors even see them.

Price intelligence

Track asking prices across regions and conditions to benchmark inventory and spot underpriced deals.

Inventory sourcing

Surface new listings in your niche the moment they post, so you can source stock and act on underpriced items first.

Market analysis

Quantify supply, demand, and pricing trends for a product line — clean structured data, no scraper to maintain.

Pricing

Pay only for results

No subscriptions, no minimums. Top up credits and spend them across any agent.

Pay as you go
from$5.00/ 1k listings
Facebook Marketplace$7.50 / 1k
Craigslist$5.00 / 1k
Shpock$12.00 / 1k
  • First 25 listings free
  • 18 data points per listing
  • Real-time extraction, no caching
  • cURL / Python / Node — pick your stack
Start free
FAQ

Questions, answered

What input does the agent take?

Any Facebook Marketplace category or search URL. Paste it in the playground or pass it to the API as the `url` parameter.

How is pricing calculated?

You pay per result: $7.50 per 1,000 listings returned. Failed or empty runs are not charged.

How fresh is the data?

Every run fetches live results at request time — nothing is cached or pre-scraped. You get the listings as they appear right now.

Is there a free trial?

Yes — your first 25 listings are free, no card required, so you can validate the output before paying.