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Prediction Market APIPolymarket

Prediction Markets

Production-grade Polymarket data — markets, prices, activity, and P&L — through a single HTTP API

Power AI trading backtests, copy-trading apps, and portfolio dashboards with on-chain Polygon data enriched with Polymarket metadata. Part of the Token API.

  • ✓Read-only REST endpoints covering markets, OHLCV, open interest, activity, positions, and platform aggregates
  • ✓On-chain event data from Polygon, enriched with Polymarket scraper metadata
  • ✓Scales from one-off research scripts to always-on trading agents
Get API access📊 See more Stats! →Polymarket Website →

What you get with the Prediction Markets API

REST endpoints

Markets, OHLCV, OI, activity, positions, platform, users

Polygon on-chain

Trades, splits, merges, redemptions — at the tx level

Per-user P&L

Realized and unrealized PNL, cost basis, current price

Hourly refresh

Aggregated leaderboards updated continuously

// 01 · Headline metrics

24-hour macro

Six complete 4-hour buckets as of 2026-04-28.
Queried live via /v1/polymarket/platform.

Net open interest · peak bucket↘ -1.9% over window
$26.72M
Outcome-share liquidity locked at 2026-04-27 00:00 UTC — the highest of the window. Bucket average $21.86M · 24h OI flow $131.17M.
Buy vs. sell volume · 24h
2.91×Sell-side dominated every bucket. $75.56M sold vs $26.00M bought across $101.57M of total notional.
25.6%BUY
SELL74.4%
Buy volume$26.00M
Sell volume$75.56M
Total fees16.43%
$16.69M
Vol-weighted rate.
Total trades↗ 105.6k/hr
2.53M
491.9k buys · 2.04M sells.
Avg trade size6 buckets
$40.07
Volume / trades. Sell-weighted.
OI transactionssplit/merge
3.94M
3.68M splits · 259.5k merges.
// 03 / Daily BTC market

BTC Direction Market vs Spot Price

Polymarket Up probability against Hyperliquid BTC OHLCV over the active Polymarket trading window.
Cached live requests via /v1/polymarket/markets/ohlc and /v1/hyperliquid/markets/ohlc.

OHLCV 10m intervals

Bitcoin Up or Down on May 4?

bitcoin-up-or-down-on-may-4-2026 / 2026-05-03 16:00 to 2026-05-04 16:00 UTC / $202.1k Polymarket volume / 3,394 trades. Peak bucket $15.7k at 2026-05-04 15:30 UTC.

0%25%50%75%100%$15.7k$0$78,293$79,384$80,475PINAX16:00May 322:40May 304:40May 410:20May 416:00May 42026-05-03 16:00 UTCUp 49%Down 51%Polymarket volume$784Polymarket trades48Hyperliquid BTCO $78,623H $78,652L $78,585C $78,598BTC volume$2.14M2026-05-03 16:10 UTCUp 48%Down 52%Polymarket volume$510Polymarket trades8Hyperliquid BTCO $78,598H $78,616L $78,581C $78,581BTC volume$3.55M2026-05-03 16:30 UTCUp 51%Down 50%Polymarket volume$1.9kPolymarket trades64Hyperliquid BTCO $78,628H $78,733L $78,628C $78,703BTC volume$3.41M2026-05-03 16:50 UTCUp 50%Down 50%Polymarket volume$31Polymarket trades3Hyperliquid BTCO $78,679H $78,692L $78,625C $78,627BTC volume$5.55M2026-05-03 17:00 UTCUp 48%Down 52%Polymarket volume$41Polymarket trades6Hyperliquid BTCO $78,627H $78,627L $78,547C $78,625BTC volume$5.07M2026-05-03 17:10 UTCUp 51%Down 50%Polymarket volume$32Polymarket trades8Hyperliquid BTCO $78,625H $78,695L $78,621C $78,695BTC volume$3.14M2026-05-03 17:30 UTCUp 53%Down 48%Polymarket volume$657Polymarket trades14Hyperliquid BTCO $78,702H $78,788L $78,702C $78,762BTC volume$10.27M2026-05-03 17:40 UTCUp 53%Down 48%Polymarket volume$60Polymarket trades5Hyperliquid BTCO $78,763H $78,771L $78,723C $78,746BTC volume$2.00M2026-05-03 18:10 UTCUp 49%Down 52%Polymarket volume$83Polymarket trades6Hyperliquid BTCO $78,652H $78,652L $78,595C $78,650BTC volume$28.01M2026-05-03 18:20 UTCUp 50%Down 51%Polymarket volume$166Polymarket trades4Hyperliquid BTCO $78,651H $78,703L $78,642C $78,694BTC volume$3.13M2026-05-03 18:30 UTCUp 50%Down 50%Polymarket volume$52Polymarket trades19Hyperliquid BTCO $78,694H $78,694L $78,653C $78,653BTC volume$3.57M2026-05-03 18:40 UTCUp 50%Down 51%Polymarket volume$52Polymarket trades3Hyperliquid BTCO $78,654H $78,684L $78,653C $78,684BTC volume$1.81M2026-05-03 18:50 UTCUp 51%Down 49%Polymarket volume$124Polymarket trades4Hyperliquid BTCO $78,684H $78,718L $78,684C $78,708BTC volume$2.26M2026-05-03 19:00 UTCUp 51%Down 50%Polymarket volume$19Polymarket trades4Hyperliquid BTCO $78,707H $78,721L $78,689C $78,703BTC volume$2.04M2026-05-03 19:10 UTCUp 51%Down 50%Polymarket volume$25Polymarket trades4Hyperliquid BTCO $78,698H $78,698L $78,660C $78,664BTC volume$2.00M2026-05-03 19:30 UTCUp 52%Down 48%Polymarket volume$431Polymarket trades58Hyperliquid BTCO $78,653H $78,803L $78,653C $78,746BTC volume$4.22M2026-05-03 19:40 UTCUp 53%Down 47%Polymarket volume$365Polymarket trades7Hyperliquid BTCO $78,746H $78,777L $78,726C $78,758BTC volume$3.53M2026-05-03 19:50 UTCUp 55%Down 47%Polymarket volume$95Polymarket trades3Hyperliquid BTCO $78,757H $78,770L $78,741C $78,741BTC volume$5.18M2026-05-03 20:00 UTCUp 52%Down 47%Polymarket volume$1Polymarket trades1Hyperliquid BTCO $78,740H $78,756L $78,702C $78,707BTC volume$2.55M2026-05-03 20:10 UTCUp 53%Down 48%Polymarket volume$14Polymarket trades3Hyperliquid BTCO $78,707H $78,762L $78,701C $78,755BTC volume$2.33M2026-05-03 20:20 UTCUp 57%Down 43%Polymarket volume$435Polymarket trades34Hyperliquid BTCO $78,755H $78,942L $78,755C $78,874BTC volume$11.69M2026-05-03 20:30 UTCUp 62%Down 39%Polymarket volume$3.7kPolymarket trades153Hyperliquid BTCO $78,874H $79,232L $78,874C $79,001BTC volume$63.10M2026-05-03 20:40 UTCUp 59%Down 43%Polymarket volume$182Polymarket trades26Hyperliquid BTCO $79,002H $79,002L $78,812C $78,812BTC volume$18.89M2026-05-03 20:50 UTCUp 58%Down 43%Polymarket volume$96Polymarket trades2Hyperliquid BTCO $78,811H $78,879L $78,811C $78,879BTC volume$23.99M2026-05-03 21:00 UTCUp 58%Down 43%Polymarket volume$857Polymarket trades9Hyperliquid BTCO $78,879H $78,961L $78,829C $78,961BTC volume$11.68M2026-05-03 21:10 UTCUp 61%Down 40%Polymarket volume$3.8kPolymarket trades18Hyperliquid BTCO $78,961H $79,031L $78,945C $78,949BTC volume$7.31M2026-05-03 21:20 UTCUp 59%Down 40%Polymarket volume$22Polymarket trades3Hyperliquid BTCO $78,949H $78,951L $78,881C $78,883BTC volume$16.65M2026-05-03 21:30 UTCUp 56%Down 45%Polymarket volume$79Polymarket trades10Hyperliquid BTCO $78,882H $78,893L $78,812C $78,830BTC volume$7.63M2026-05-03 21:40 UTCUp 51%Down 49%Polymarket volume$314Polymarket trades16Hyperliquid BTCO $78,830H $78,830L $78,621C $78,623BTC volume$34.02M2026-05-03 21:50 UTCUp 55%Down 48%Polymarket volume$103Polymarket trades5Hyperliquid BTCO $78,624H $78,807L $78,624C $78,801BTC volume$5.83M2026-05-03 22:00 UTCUp 59%Down 38%Polymarket volume$444Polymarket trades23Hyperliquid BTCO $78,801H $79,107L $78,801C $78,917BTC volume$70.81M2026-05-03 22:10 UTCUp 67%Down 36%Polymarket volume$1.0kPolymarket trades36Hyperliquid BTCO $78,917H $79,383L $78,917C $79,193BTC volume$70.65M2026-05-03 22:20 UTCUp 63%Down 40%Polymarket volume$138Polymarket trades14Hyperliquid BTCO $79,193H $79,193L $78,939C $79,039BTC volume$34.81M2026-05-03 22:30 UTCUp 66%Down 34%Polymarket volume$142Polymarket trades10Hyperliquid BTCO $79,039H $79,139L $78,984C $79,110BTC volume$29.61M2026-05-03 22:40 UTCUp 70%Down 30%Polymarket volume$391Polymarket trades23Hyperliquid BTCO $79,116H $79,331L $79,116C $79,300BTC volume$20.48M2026-05-03 22:50 UTCUp 67%Down 34%Polymarket volume$74Polymarket trades5Hyperliquid BTCO $79,300H $79,300L $79,130C $79,132BTC volume$13.29M2026-05-03 23:00 UTCUp 66%Down 33%Polymarket volume$121Polymarket trades12Hyperliquid BTCO $79,132H $79,233L $79,081C $79,088BTC volume$58.90M2026-05-03 23:10 UTCUp 63%Down 39%Polymarket volume$214Polymarket trades18Hyperliquid BTCO $79,087H $79,087L $78,946C $78,946BTC volume$7.76M2026-05-03 23:20 UTCUp 50%Down 50%Polymarket volume$2.9kPolymarket trades158Hyperliquid BTCO $78,946H $78,946L $78,602C $78,613BTC volume$39.20M2026-05-03 23:30 UTCUp 48%Down 48%Polymarket volume$3.6kPolymarket trades95Hyperliquid BTCO $78,613H $78,682L $78,563C $78,659BTC volume$18.43M2026-05-03 23:40 UTCUp 48%Down 53%Polymarket volume$49Polymarket trades11Hyperliquid BTCO $78,660H $78,660L $78,460C $78,543BTC volume$24.29M2026-05-03 23:50 UTCUp 46%Down 53%Polymarket volume$79Polymarket trades2Hyperliquid BTCO $78,543H $78,549L $78,485C $78,533BTC volume$17.81M2026-05-04 00:00 UTCUp 45%Down 57%Polymarket volume$209Polymarket trades11Hyperliquid BTCO $78,533H $78,533L $78,408C $78,443BTC volume$18.95M2026-05-04 00:10 UTCUp 41%Down 60%Polymarket volume$75Polymarket trades17Hyperliquid BTCO $78,443H $78,469L $78,365C $78,408BTC volume$17.71M2026-05-04 00:20 UTCUp 40%Down 64%Polymarket volume$723Polymarket trades16Hyperliquid BTCO $78,407H $78,408L $78,255C $78,311BTC volume$41.26M2026-05-04 00:30 UTCUp 41%Down 60%Polymarket volume$53Polymarket trades5Hyperliquid BTCO $78,312H $78,392L $78,293C $78,293BTC volume$10.78M2026-05-04 00:40 UTCUp 42%Down 60%Polymarket volume$27Polymarket trades3Hyperliquid BTCO $78,293H $78,444L $78,293C $78,429BTC volume$12.34M2026-05-04 00:50 UTCUp 45%Down 60%Polymarket volume$57Polymarket trades3Hyperliquid BTCO $78,429H $78,528L $78,374C $78,515BTC volume$7.58M2026-05-04 01:10 UTCUp 43%Down 58%Polymarket volume$7Polymarket trades2Hyperliquid BTCO $78,439H $78,476L $78,374C $78,413BTC volume$5.72M2026-05-04 01:20 UTCUp 42%Down 58%Polymarket volume$131Polymarket trades1Hyperliquid BTCO $78,413H $78,561L $78,398C $78,560BTC volume$6.86M2026-05-04 01:30 UTCUp 55%Down 42%Polymarket volume$1.5kPolymarket trades68Hyperliquid BTCO $78,560H $79,080L $78,560C $78,825BTC volume$57.63M2026-05-04 01:40 UTCUp 58%Down 45%Polymarket volume$255Polymarket trades10Hyperliquid BTCO $78,826H $78,967L $78,759C $78,956BTC volume$41.75M2026-05-04 01:50 UTCUp 77%Down 21%Polymarket volume$7.5kPolymarket trades100Hyperliquid BTCO $78,956H $79,806L $78,956C $79,736BTC volume$125.46M2026-05-04 02:00 UTCUp 80%Down 21%Polymarket volume$4.3kPolymarket trades98Hyperliquid BTCO $79,737H $80,043L $79,580C $79,899BTC volume$116.69M2026-05-04 02:10 UTCUp 80%Down 21%Polymarket volume$11.0kPolymarket trades48Hyperliquid BTCO $79,899H $79,908L $79,765C $79,835BTC volume$61.76M2026-05-04 02:20 UTCUp 80%Down 24%Polymarket volume$4.6kPolymarket trades28Hyperliquid BTCO $79,836H $79,886L $79,612C $79,667BTC volume$52.74M2026-05-04 02:30 UTCUp 81%Down 21%Polymarket volume$3.5kPolymarket trades27Hyperliquid BTCO $79,668H $79,898L $79,668C $79,898BTC volume$21.13M2026-05-04 02:40 UTCUp 83%Down 17%Polymarket volume$1.8kPolymarket trades27Hyperliquid BTCO $79,898H $80,246L $79,898C $80,096BTC volume$148.04M2026-05-04 02:50 UTCUp 87%Down 14%Polymarket volume$596Polymarket trades13Hyperliquid BTCO $80,097H $80,333L $80,097C $80,128BTC volume$86.49M2026-05-04 03:00 UTCUp 85%Down 14%Polymarket volume$186Polymarket trades9Hyperliquid BTCO $80,128H $80,228L $79,949C $80,169BTC volume$58.96M2026-05-04 03:10 UTCUp 87%Down 12%Polymarket volume$640Polymarket trades19Hyperliquid BTCO $80,169H $80,387L $80,165C $80,165BTC volume$35.80M2026-05-04 03:20 UTCUp 86%Down 15%Polymarket volume$132Polymarket trades3Hyperliquid BTCO $80,165H $80,217L $80,027C $80,071BTC volume$18.44M2026-05-04 03:40 UTCUp 86%Down 15%Polymarket volume$175Polymarket trades15Hyperliquid BTCO $79,963H $80,198L $79,876C $80,193BTC volume$32.16M2026-05-04 03:50 UTCUp 89%Down 12%Polymarket volume$277Polymarket trades4Hyperliquid BTCO $80,192H $80,279L $80,140C $80,279BTC volume$16.29M2026-05-04 04:00 UTCUp 90%Down 10%Polymarket volume$1.4kPolymarket trades18Hyperliquid BTCO $80,279H $80,419L $80,279C $80,393BTC volume$32.35M2026-05-04 04:10 UTCUp 92%Down 9%Polymarket volume$1.4kPolymarket trades26Hyperliquid BTCO $80,393H $80,567L $80,366C $80,475BTC volume$33.62M2026-05-04 04:20 UTCUp 91%Down 10%Polymarket volume$232Polymarket trades7Hyperliquid BTCO $80,470H $80,486L $80,198C $80,296BTC volume$24.78M2026-05-04 04:30 UTCUp 92%Down 10%Polymarket volume$26Polymarket trades4Hyperliquid BTCO $80,295H $80,379L $80,253C $80,253BTC volume$13.18M2026-05-04 04:40 UTCUp 91%Down 9%Polymarket volume$99Polymarket trades6Hyperliquid BTCO $80,253H $80,339L $80,253C $80,253BTC volume$7.74M2026-05-04 04:50 UTCUp 91%Down 9%Polymarket volume$1.5kPolymarket trades54Hyperliquid BTCO $80,253H $80,316L $80,189C $80,301BTC volume$15.80M2026-05-04 05:00 UTCUp 91%Down 9%Polymarket volume$62Polymarket trades8Hyperliquid BTCO $80,301H $80,349L $80,148C $80,179BTC volume$20.31M2026-05-04 05:10 UTCUp 90%Down 10%Polymarket volume$510Polymarket trades3Hyperliquid BTCO $80,177H $80,177L $79,983C $79,983BTC volume$18.96M2026-05-04 05:20 UTCUp 88%Down 11%Polymarket volume$337Polymarket trades6Hyperliquid BTCO $79,983H $80,047L $79,929C $79,953BTC volume$36.57M2026-05-04 05:30 UTCUp 90%Down 11%Polymarket volume$2.5kPolymarket trades7Hyperliquid BTCO $79,953H $80,059L $79,926C $80,059BTC volume$16.14M2026-05-04 05:40 UTCUp 91%Down 11%Polymarket volume$5.2kPolymarket trades16Hyperliquid BTCO $80,059H $80,066L $79,965C $79,965BTC volume$12.05M2026-05-04 05:50 UTCUp 90%Down 10%Polymarket volume$46Polymarket trades4Hyperliquid BTCO $79,964H $79,994L $79,957C $79,978BTC volume$4.22M2026-05-04 06:00 UTCUp 90%Down 12%Polymarket volume$96Polymarket trades11Hyperliquid BTCO $79,977H $79,989L $79,869C $79,894BTC volume$6.10M2026-05-04 06:10 UTCUp 86%Down 15%Polymarket volume$931Polymarket trades14Hyperliquid BTCO $79,894H $79,926L $79,764C $79,764BTC volume$16.72M2026-05-04 06:20 UTCUp 80%Down 17%Polymarket volume$824Polymarket trades62Hyperliquid BTCO $79,765H $79,765L $79,484C $79,664BTC volume$54.50M2026-05-04 06:30 UTCUp 84%Down 16%Polymarket volume$9.8kPolymarket trades31Hyperliquid BTCO $79,664H $79,724L $79,610C $79,710BTC volume$11.26M2026-05-04 06:40 UTCUp 88%Down 13%Polymarket volume$53Polymarket trades7Hyperliquid BTCO $79,709H $79,838L $79,703C $79,819BTC volume$25.97M2026-05-04 07:00 UTCUp 89%Down 12%Polymarket volume$22Polymarket trades7Hyperliquid BTCO $79,826H $79,896L $79,776C $79,829BTC volume$10.01M2026-05-04 07:10 UTCUp 89%Down 13%Polymarket volume$34Polymarket trades5Hyperliquid BTCO $79,829H $79,868L $79,788C $79,825BTC volume$9.58M2026-05-04 07:20 UTCUp 88%Down 12%Polymarket volume$203Polymarket trades6Hyperliquid BTCO $79,821H $79,833L $79,802C $79,813BTC volume$6.46M2026-05-04 07:30 UTCUp 87%Down 13%Polymarket volume$236Polymarket trades24Hyperliquid BTCO $79,813H $79,821L $79,661C $79,687BTC volume$15.67M2026-05-04 07:40 UTCUp 89%Down 11%Polymarket volume$134Polymarket trades16Hyperliquid BTCO $79,687H $79,859L $79,687C $79,809BTC volume$27.99M2026-05-04 07:50 UTCUp 87%Down 14%Polymarket volume$69Polymarket trades9Hyperliquid BTCO $79,808H $79,808L $79,646C $79,656BTC volume$8.59M2026-05-04 08:00 UTCUp 87%Down 13%Polymarket volume$152Polymarket trades12Hyperliquid BTCO $79,656H $79,690L $79,564C $79,690BTC volume$14.53M2026-05-04 08:10 UTCUp 89%Down 11%Polymarket volume$979Polymarket trades8Hyperliquid BTCO $79,690H $79,768L $79,682C $79,734BTC volume$26.18M2026-05-04 08:20 UTCUp 88%Down 11%Polymarket volume$66Polymarket trades7Hyperliquid BTCO $79,734H $79,734L $79,600C $79,704BTC volume$21.64M2026-05-04 08:30 UTCUp 89%Down 11%Polymarket volume$375Polymarket trades10Hyperliquid BTCO $79,703H $79,736L $79,665C $79,705BTC volume$7.38M2026-05-04 08:40 UTCUp 90%Down 10%Polymarket volume$536Polymarket trades5Hyperliquid BTCO $79,704H $79,716L $79,623C $79,657BTC volume$8.90M2026-05-04 08:50 UTCUp 90%Down 11%Polymarket volume$277Polymarket trades11Hyperliquid BTCO $79,657H $79,715L $79,577C $79,670BTC volume$16.15M2026-05-04 09:00 UTCUp 91%Down 10%Polymarket volume$541Polymarket trades6Hyperliquid BTCO $79,670H $79,729L $79,620C $79,663BTC volume$8.62M2026-05-04 09:10 UTCUp 91%Down 10%Polymarket volume$261Polymarket trades15Hyperliquid BTCO $79,662H $79,738L $79,662C $79,682BTC volume$7.69M2026-05-04 09:20 UTCUp 92%Down 8%Polymarket volume$35Polymarket trades4Hyperliquid BTCO $79,681H $79,769L $79,679C $79,689BTC volume$6.04M2026-05-04 09:30 UTCUp 91%Down 9%Polymarket volume$52Polymarket trades6Hyperliquid BTCO $79,689H $79,779L $79,659C $79,779BTC volume$5.40M2026-05-04 09:40 UTCUp 93%Down 7%Polymarket volume$1.0kPolymarket trades32Hyperliquid BTCO $79,779H $79,843L $79,760C $79,839BTC volume$14.59M2026-05-04 09:50 UTCUp 94%Down 6%Polymarket volume$38Polymarket trades12Hyperliquid BTCO $79,839H $79,891L $79,801C $79,801BTC volume$18.11M2026-05-04 10:00 UTCUp 54%Down 46%Polymarket volume$6.1kPolymarket trades148Hyperliquid BTCO $79,800H $79,800L $78,637C $78,801BTC volume$131.36M2026-05-04 10:10 UTCUp 39%Down 58%Polymarket volume$11.6kPolymarket trades87Hyperliquid BTCO $78,801H $78,801L $78,353C $78,353BTC volume$87.31M2026-05-04 10:20 UTCUp 45%Down 55%Polymarket volume$2.4kPolymarket trades118Hyperliquid BTCO $78,352H $78,470L $78,196C $78,470BTC volume$82.45M2026-05-04 10:30 UTCUp 63%Down 38%Polymarket volume$3.0kPolymarket trades57Hyperliquid BTCO $78,470H $78,944L $78,464C $78,912BTC volume$99.48M2026-05-04 10:40 UTCUp 68%Down 33%Polymarket volume$9.9kPolymarket trades43Hyperliquid BTCO $78,904H $79,031L $78,872C $79,030BTC volume$34.22M2026-05-04 10:50 UTCUp 63%Down 38%Polymarket volume$751Polymarket trades19Hyperliquid BTCO $79,030H $79,046L $78,818C $78,908BTC volume$31.18M2026-05-04 11:00 UTCUp 63%Down 38%Polymarket volume$59Polymarket trades14Hyperliquid BTCO $78,907H $79,016L $78,888C $78,988BTC volume$14.83M2026-05-04 11:10 UTCUp 71%Down 29%Polymarket volume$264Polymarket trades11Hyperliquid BTCO $78,989H $79,064L $78,939C $79,063BTC volume$12.30M2026-05-04 11:20 UTCUp 64%Down 35%Polymarket volume$7.0kPolymarket trades28Hyperliquid BTCO $79,063H $79,085L $78,892C $78,903BTC volume$18.18M2026-05-04 11:30 UTCUp 62%Down 46%Polymarket volume$581Polymarket trades13Hyperliquid BTCO $78,903H $78,903L $78,693C $78,724BTC volume$28.36M2026-05-04 11:40 UTCUp 56%Down 43%Polymarket volume$1.3kPolymarket trades24Hyperliquid BTCO $78,724H $78,748L $78,661C $78,728BTC volume$24.19M2026-05-04 11:50 UTCUp 60%Down 41%Polymarket volume$1.1kPolymarket trades28Hyperliquid BTCO $78,728H $78,816L $78,728C $78,751BTC volume$5.63M2026-05-04 12:00 UTCUp 57%Down 45%Polymarket volume$275Polymarket trades5Hyperliquid BTCO $78,752H $78,805L $78,687C $78,731BTC volume$10.60M2026-05-04 12:10 UTCUp 64%Down 36%Polymarket volume$384Polymarket trades18Hyperliquid BTCO $78,731H $78,918L $78,727C $78,918BTC volume$11.40M2026-05-04 12:20 UTCUp 67%Down 34%Polymarket volume$233Polymarket trades25Hyperliquid BTCO $78,918H $78,984L $78,896C $78,920BTC volume$27.43M2026-05-04 12:30 UTCUp 65%Down 34%Polymarket volume$162Polymarket trades13Hyperliquid BTCO $78,923H $78,927L $78,811C $78,881BTC volume$9.10M2026-05-04 12:40 UTCUp 69%Down 33%Polymarket volume$352Polymarket trades14Hyperliquid BTCO $78,880H $78,964L $78,880C $78,961BTC volume$11.42M2026-05-04 12:50 UTCUp 69%Down 31%Polymarket volume$385Polymarket trades11Hyperliquid BTCO $78,961H $78,961L $78,832C $78,832BTC volume$9.56M2026-05-04 13:00 UTCUp 63%Down 38%Polymarket volume$1.0kPolymarket trades49Hyperliquid BTCO $78,827H $78,827L $78,556C $78,805BTC volume$53.17M2026-05-04 13:10 UTCUp 66%Down 34%Polymarket volume$412Polymarket trades20Hyperliquid BTCO $78,805H $78,917L $78,805C $78,885BTC volume$11.08M2026-05-04 13:20 UTCUp 70%Down 31%Polymarket volume$170Polymarket trades17Hyperliquid BTCO $78,885H $79,000L $78,885C $78,922BTC volume$22.01M2026-05-04 13:30 UTCUp 62%Down 31%Polymarket volume$6.4kPolymarket trades47Hyperliquid BTCO $78,923H $79,052L $78,813C $78,911BTC volume$27.25M2026-05-04 13:40 UTCUp 70%Down 34%Polymarket volume$146Polymarket trades18Hyperliquid BTCO $78,909H $78,909L $78,763C $78,801BTC volume$20.60M2026-05-04 13:50 UTCUp 62%Down 45%Polymarket volume$129Polymarket trades13Hyperliquid BTCO $78,801H $78,817L $78,708C $78,747BTC volume$17.19M2026-05-04 14:00 UTCUp 40%Down 60%Polymarket volume$761Polymarket trades60Hyperliquid BTCO $78,747H $78,758L $78,500C $78,509BTC volume$44.23M2026-05-04 14:10 UTCUp 78%Down 22%Polymarket volume$660Polymarket trades43Hyperliquid BTCO $78,509H $79,012L $78,509C $79,012BTC volume$42.78M2026-05-04 14:20 UTCUp 90%Down 9%Polymarket volume$1.9kPolymarket trades64Hyperliquid BTCO $79,011H $79,327L $79,011C $79,214BTC volume$52.86M2026-05-04 14:30 UTCUp 95%Down 5%Polymarket volume$2.6kPolymarket trades43Hyperliquid BTCO $79,214H $79,503L $79,214C $79,477BTC volume$43.54M2026-05-04 14:40 UTCUp 97%Down 2%Polymarket volume$2.0kPolymarket trades28Hyperliquid BTCO $79,477H $80,118L $79,477C $79,983BTC volume$74.23M2026-05-04 14:50 UTCUp 99%Down 1%Polymarket volume$5.7kPolymarket trades35Hyperliquid BTCO $79,984H $80,432L $79,984C $80,156BTC volume$124.47M2026-05-04 15:00 UTCUp 99%Down 1%Polymarket volume$6.3kPolymarket trades27Hyperliquid BTCO $80,155H $80,293L $80,036C $80,047BTC volume$79.04M2026-05-04 15:10 UTCUp 99%Down 1%Polymarket volume$3.5kPolymarket trades29Hyperliquid BTCO $80,044H $80,164L $79,505C $79,505BTC volume$68.43M2026-05-04 15:20 UTCUp 98%Down 2%Polymarket volume$3.7kPolymarket trades103Hyperliquid BTCO $79,500H $79,738L $79,387C $79,652BTC volume$133.48M2026-05-04 15:30 UTCUp 100%Down 0%Polymarket volume$15.7kPolymarket trades54Hyperliquid BTCO $79,653H $79,703L $79,482C $79,665BTC volume$54.14M2026-05-04 15:40 UTCUp 100%Down 0%Polymarket volume$11.1kPolymarket trades61Hyperliquid BTCO $79,665H $79,858L $79,613C $79,769BTC volume$25.09M2026-05-04 15:50 UTCUp 100%Down 0%Polymarket volume$1.8kPolymarket trades14Hyperliquid BTCO $79,769H $80,045L $79,541C $79,984BTC volume$71.70M2026-05-04 16:00 UTCUp 100%Down 0%Polymarket volume$358Polymarket trades10Hyperliquid BTCO $79,769H $80,045L $79,541C $79,984BTC volume$71.70M
token_id 481527055417...79417776peak 2026-05-04 15:30 / $15.7kBTC range $78,293 to $80,475Share pagePNG image
// 02 · All-time leaders

Largest Volume

Highest-volume Polymarket markets to date, sorted by lifetime notional.
Queried live via /v1/polymarket/markets.

Polymarket Website →
  1. 01

    Will Donald Trump win the 2024 US Presidential Election?

    Jan 4, 2024 → Nov 5, 2024ResolvedYesNo
    $1.53B
    Lifetime vol
  2. 02

    Will Kamala Harris win the 2024 US Presidential Election?

    Jan 4, 2024 → Nov 4, 2024ResolvedYesNo
    $1.04B
    Lifetime vol
  3. 03

    Will Donald Trump be inaugurated?

    Nov 1, 2024 → Jan 20, 2025ResolvedYesNo
    $400.4M
    Lifetime vol
  4. 04

    Will the Sacramento Kings win the 2025 NBA Finals?

    Sep 24, 2024 → Jun 23, 2025ResolvedYesNo
    $378.0M
    Lifetime vol
  5. 05

    Will Nicolae Ciucă win the 2024 Romanian Presidential election?

    Nov 8, 2024 → Dec 8, 2024ResolvedYesNo
    $326.5M
    Lifetime vol
  6. 06

    US forces enter Iran by April 30?

    Mar 18, 2026 → Apr 30, 2026ResolvedYesNo
    $269.0M
    Lifetime vol
  7. 07

    Will Zelenskyy wear a suit before July?

    May 22, 2025 → Jun 30, 2025ResolvedYesNo
    $242.2M
    Lifetime vol
  8. 08

    Will any other Republican Politician win the 2024 US Presidential Election?

    Jan 6, 2024 → Nov 5, 2024ResolvedYesNo
    $241.7M
    Lifetime vol
// 04 · Flow over time

Volume, bucketed

Each bar is a complete 4-hour window. Peak activity at 2026-04-27 00:00 UTC.
Queried live via /v1/polymarket/platform.

Traded volume · stacked buy / sell

$101.57M / 24h

Sum of buy + sell volume across the 6 complete buckets. Peak bucket $19.14M (2026-04-27 00:00). Bucket average $16.93M.

BuySell
$0$5M$10M$15M$20M00:00Apr 2704:0008:0012:0016:0020:002026-04-27 00:00 UTCVolume$19.14MBuy $4.61MSell $14.53MTrades410,3312026-04-27 04:00 UTCVolume$15.12MBuy $4.26MSell $10.86MTrades426,3822026-04-27 08:00 UTCVolume$14.45MBuy $3.99MSell $10.46MTrades393,7842026-04-27 12:00 UTCVolume$18.19MBuy $4.58MSell $13.62MTrades483,5192026-04-27 16:00 UTCVolume$18.69MBuy $4.85MSell $13.83MTrades452,6012026-04-27 20:00 UTCVolume$15.98MBuy $3.72MSell $12.26MTrades368,265
avg bucket $16.93Mpeak 2026-04-27 00:00 · $19.14Mlow 2026-04-27 08:00 · $14.45M
// 05 · Raw buckets

Hourly breakdown

Exact response, newest first. Partial current bucket excluded from totals.
Queried live via /v1/polymarket/platform.

Bucket (UTC)VolumeBuySellTradesNet OIFeesRate
2026-04-27 20:00$15,982,059$3,717,450$12,264,609368,265$26,205,188$3,323,37820.79%
2026-04-27 16:00$18,685,495$4,851,775$13,833,720452,601$23,637,381$3,030,33016.22%
2026-04-27 12:00$18,191,524$4,575,783$13,615,741483,519$22,732,012$2,991,64916.45%
2026-04-27 08:00$14,449,844$3,992,274$10,457,570393,784$14,592,574$2,055,90614.23%
2026-04-27 04:00$15,118,589$4,261,722$10,856,867426,382$17,283,728$1,896,99012.55%
2026-04-27 00:00$19,138,894$4,605,181$14,533,713410,331$26,718,180$3,393,58217.73%
6 rows · complete buckets only · usdc 6dp normalizedquery 35 ms · refreshes ≤ 60s

How teams use it

Three patterns we see most often. Each uses a small subset of the endpoints — you can mix them as needed.

01

AI Trading Backtesting

Replay historical price action per outcome token and stress-test strategies against real liquidity events. Combine OHLCV with the activity feed to reconstruct fills and fees bar-by-bar.

Sample response
[
  {
    "timestamp": "2026-04-01 00:00:00",
    "open": 0.997,
    "high": 0.998,
    "low": 0.997,
    "close": 0.998,
    "volume": 295143.37,
    "trades": 1206,
    "buys": 498,
    "sells": 708,
    "unique_makers": 592,
    "unique_takers": 121,
    "total_fees": 0,
    "fee_count": 0,
    "effective_fee_rate": 0,
    "market": {
      "condition_id": "0x6331a779482df72d904c3c1e12b6409ff836bc06f8c97945cba9b25ada2c605c",
      "market_slug": "will-the-portland-trail-blazers-win-the-2026-nba-finals",
      "token_id": "48262548906086150698299934962091284390063927164151224719187427455086357699251",
      "outcome_label": "No",
      "closed": false
    }
  }
]

02

Copy Trading

Watch the top traders from the user leaderboard and mirror their entries and exits. The activity feed emits every trade, split, merge, and redemption with block-level timing so you can react in near real-time.

Sample response
[
  {
    "event_type": "trade",
    "timestamp": "2026-04-02 16:51:31",
    "block_num": 85014327,
    "tx_hash": "0xf190865afd395e2f4b8f2e5f8ceb2c05a86d94a73ea411e8a8a3fc649924c420",
    "user": "0x38e598961dd0456a7fb2e758bd433d3e59fb8a4a",
    "amount": "3976744",
    "value": 3.98,
    "fee_amount": "526315",
    "fee_value": 0.53,
    "market": {
      "condition_id": "0xcb37916b953e6b37a5be32ceabc5a093614be15d9e6abb7668bf6400fbf36d46",
      "market_slug": "bitcoin-up-or-down-on-april-3-2026",
      "token_id": "3861173442961229042274748637211736540847931193208187121747580704941582603312",
      "outcome_label": "Down",
      "closed": false
    }
  }
]

03

User Portfolio P&L

Build wallet dashboards and tax exports that show what a user holds across every Polymarket outcome token — with cost basis, current price, and realized vs unrealized PNL.

Sample response
[
  {
    "user": "0x38e598961dd0456a7fb2e758bd433d3e59fb8a4a",
    "buy_cost": 6438.35,
    "sell_revenue": 247.09,
    "realized_pnl": -6191.26,
    "unrealized_pnl": 9005.64,
    "total_pnl": 2814.38,
    "pnl_pct": -0.96,
    "net_position": 9096.61,
    "avg_price": 0.68,
    "current_price": 0.99,
    "position_value": 9005.64,
    "active": true,
    "buys": 693,
    "sells": 20,
    "transactions": 713,
    "market": {
      "condition_id": "0x59feadddd58e7821c086ee9f3dc4f544514b94ebd0e8d645a3c4d80ebdd354a2",
      "market_slug": "btc-updown-5m-1771359600",
      "token_id": "25362470215305294361999917933416973453076214567033270695579745712197481070383",
      "outcome_label": "Up",
      "closed": false
    }
  }
]

REST endpoints

See official docs: https://app.pinax.network/docs/prediction-markets

Markets

5 endpoints
GET/v1/polymarket/markets
FREE
GET/v1/polymarket/markets/ohlc
GET/v1/polymarket/markets/oi
GET/v1/polymarket/markets/activity
GET/v1/polymarket/markets/positions

Users

2 endpoints
GET/v1/polymarket/users
GET/v1/polymarket/users/positions

Platform

1 endpoint
GET/v1/polymarket/platform

How it works

Same pattern as the rest of the Token API — issue an API key, hit the endpoint, parse the JSON.

1

Request API credentials from Pinax

2

Pick the endpoint for your use case

3

Call it from your app, notebook, or MCP client

4

Ship your strategy, dashboard, or agent

Frequently Asked Questions

Same data, one endpoint.

Platform, markets, users, OHLC — all under /v1/polymarket/*. Free tier starts at 100 req/s.

Get API key →Read the docsPolymarket Website →

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