Polymarket Liquidity Rewards Scraper & Market Making API

Polymarket pays about $190,000 a day in liquidity rewards (maker rewards) to people who keep buy and sell orders near a market's price. Each market has its own daily pool, and on a typical day thousands of pools have nobody competing for them.

This Actor scans every Polymarket rewards market in about a minute and tells you:

• how much each pool pays per day
• whether anyone is competing for it right now, using Polymarket's own competition score plus a check of the live order book
• the reward band (max spread), minimum order size, midpoint, best bid and best ask
• a ready-made two-sided maker quote (Buy YES / Buy NO limit prices at minimum size) and what it costs
• an estimated daily reward for that quote if the book stays as it is

No Polymarket account, wallet or API key needed. The Actor only reads public data and never places orders.

Who it's for

• Market makers looking for liquidity reward pools worth quoting
• Market making bots that want an hourly feed of uncontested pools with prices ready to post
• Traders who want to earn Polymarket LP rewards on positions they would hold anyway
• Analysts studying Polymarket liquidity, incentives and order book depth

Why this scanner

• Uncontested flag. Most reward lists show the pot. This one tells you which pots have no maker in the band right now, the ones a single quote can take in full.
• Ready quotes. Each pool comes with Buy YES / Buy NO prices inside the reward band, sized to the minimum, with the total cost.
• Reward per dollar. Results are ranked by estimated daily reward divided by the capital the quote needs.
• Junk filtered out. Live in-game markets closing within hours, books with no agreed price and extreme prices are skipped by default.

How Polymarket's liquidity rewards work (short version)

• Each eligible market has a daily pool, a max spread (the reward band around the midpoint) and a minimum order size.
• Every minute, each maker's resting orders inside the band get a score: ((max spread − distance) / max spread)² × size. Being close to the midpoint matters most.
• The pool is split by score. If nobody else is in the band, your quote takes the whole pool for that time.
• One-sided quotes count a third. Below 10% or above 90%, only two-sided quotes count.
• Payouts arrive daily at about midnight UTC. Days under $1 aren't paid.

How to use it

1. Click Try for free.
2. Leave the defaults, or tick Only pools nobody is competing for.
3. Click Start. Results appear in about a minute as a table you can export to JSON, CSV, Excel or HTML.

Run it on a schedule

Rewards are paid per minute, so fresh data matters. Use Apify Schedules to run the scanner every hour and send results to Google Sheets, Slack, a webhook, Make, Zapier or n8n through Apify Integrations.

Call it from your bot (API)

Get the latest pools in one HTTP call:

curl -X POST "https://api.apify.com/v2/acts/nikaido_thc~polymarket-liquidity-rewards-scanner/run-sync-get-dataset-items?token=YOUR_APIFY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"onlyUncontested": true, "minDailyReward": 20, "maxResults": 20}'

Python:

from apify_client import ApifyClient

client = ApifyClient("YOUR_APIFY_TOKEN")
run = client.actor("nikaido_thc/polymarket-liquidity-rewards-scanner").call(
    run_input={"onlyUncontested": True, "minDailyReward": 20, "maxResults": 20}
)
for pool in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(pool["dailyRewardUsd"], pool["question"], pool["suggestedQuote"])

Use it with AI agents

The Actor has full input and output schemas, so AI agents using the Apify MCP server can call it directly, for example: "find Polymarket reward pools over $50 a day that nobody is quoting".

Input

Field	Default	What it does
Minimum daily reward	10	Skip pools paying less than this per day
Only pools nobody is competing for	off	Keep only uncontested pools
Maximum book width (cents)	20	Skip books with no agreed price (quoting there is a guess)
Exclude prices below 10% / above 90%	on	Near 0 or 1 only two-sided quotes earn
Minimum hours until the market ends	24	Skip live in-game markets that close within hours
Include suggested quotes	on	Add Buy YES / Buy NO prices, cost and estimated reward
Quote distance from midpoint (cents)	1	Closer earns more reward but fills more often
Sort by	reward per dollar	Or daily reward, or least competition
Maximum results	200	You pay per result

Output example

{
  "question": "Will the Bank of Brazil make no change to the target rate?",
  "url": "https://polymarket.com/event/...",
  "dailyRewardUsd": 127,
  "minSizeShares": 20,
  "maxSpreadCents": 4.5,
  "midpoint": 0.5,
  "bookWidthCents": 18,
  "polymarketCompetitiveness": 0,
  "bookCompetitionScore": 0,
  "uncontested": true,
  "hoursLeft": 816.2,
  "suggestedQuote": { "buyYesPrice": 0.49, "buyNoPrice": 0.48, "shares": 20, "costUsd": 19.4, "distanceCents": 1.5 },
  "estimatedDailyRewardUsd": 127,
  "scannedAt": "2026-11-04T23:50:00+00:00"
}

Buying NO at a price is the same book position as selling YES at 1 minus that price, so a two-sided quote is two buy orders.

Pricing

$0.005 per pool returned ($5 per 1,000). A full 200-pool run costs about $1; a run filtered to the top 20 uncontested pools costs about $0.10. You can cap the maximum charge per run, and the Actor stops at that limit. Apify's free plan includes monthly credit, enough for several hundred pools.

FAQ

How is "uncontested" decided? A pool is uncontested when Polymarket's own competition score for the market is 0 and no resting order in the live book is inside the reward band at the minimum size.

How often should I run it? Competition changes through the day. Hourly is a good default for a bot; once a day is enough to spot recurring empty pools.

Does it trade for me? No. It is read-only and needs no keys. You place the orders yourself or through your own bot.

Is the estimated reward guaranteed? No. It assumes the book stays as it is all day. Other makers can arrive and take a share.

Can I get only one market or category? Not yet. Open an issue with what you need.

Things to know

• Snapshot, not a promise. The estimated reward assumes the book stays exactly as it is all day. Other makers can arrive at any time and take a share.
• Fills can lose money. Rewards are paid for resting orders; if someone trades against one side and the price keeps moving, that side loses.
• Wide books are skipped by default because a quote at the "midpoint" of a book with no agreed price is a guess that better-informed traders can hit.
• Availability. Polymarket restricts trading from some countries. Check Polymarket's terms for where you live.

Data sources

Polymarket's public CLOB API (reward markets and order books) and the public data behind polymarket.com's rewards page (competition scores).

Feedback

Found a bug or want a field added? Open an issue on the Issues tab.