The data layer for prediction markets.

Live markets, trades, orderbooks, and signals.
One API for AI agents.

Start building free Explore the data

Live market data

Fed rate cut before September?

YES

63.4¢

+0.0%

36.6%

24h Volume

$4.82M

Trades

18,429

Liquidity

$1.27M

63.4¢

One data layer. Every signal you need.

MARKETS

Know what is happening.

Live market metadata, probabilities, volume, liquidity and status.

Fed rate cut before September?63.4¢

Will Bitcoin trade above $120K in 2026?73.8¢

New frontier model shipped this quarter?81.2¢

NBER declares a recession before year end?18.2¢

ORDERBOOKS

See where the market is moving.

Real-time bids, asks, spreads and market depth.

64.6¢1918

64.2¢647

63.8¢364

63.0¢1700

62.6¢1458

62.2¢792

TRADES

Follow the money.

Every trade as it happens, normalized and queryable.

YES$4.7K18m ago

NO$75817m ago

YES$52016m ago

YES$34215m ago

SIGNALS

Turn market activity into information.

Momentum, movement and unusual activity.

Unusual volume flagged

Momentum ↑ 3.2%

ON-CHAIN

Go beyond the frontend.

Access indexed blockchain activity and transaction-level data.

0x8a2f…c19confirmed

0x41bd…7e2confirmed

0xf90a…3c4confirmed

From market event to structured data.

Every event, normalized and ready for agents.

Event stream

00:00:00.000MARKET UPDATENew frontier model shipped this quarter? YES 81.2% → 80.5%POLYMARKETseed-0

00:00:01.000ORDERBOOKBid 63.1 Ask 63.7POLYMARKETseed-1

00:00:02.000SIGNALMomentum ↑POLYMARKETseed-2

00:00:03.000MARKET UPDATENBER declares a recession before year end? YES 18.2% → 18.2%POLYMARKETseed-3

00:00:04.000SIGNALUnusual volume flaggedPOLYMARKETseed-4

00:00:05.000SIGNALUnusual volume flaggedPOLYMARKETseed-5

00:00:06.000TRADE$8,323 @ 18.2¢POLYMARKETseed-6

00:00:07.000MARKET UPDATEA spot SOL ETF approved in the US? YES 55.1% → 56.0%POLYMARKETseed-7

00:00:08.000SIGNALUnusual volume flaggedPOLYMARKETseed-8

00:00:09.000MARKET UPDATEFed rate cut before September? YES 63.4% → 62.7%POLYMARKETseed-9

Live from markets

Captured in real-time

Normalized

Standardized & enriched

Structured

Consistent & queryable

Agent ready

Built for AI applications

Build on top of the market.

PMAxis gives you the real-time building blocks to power trading systems, analytics and AI agents.

Trading system preview

Fed rate cut before September?

63.4¢

+2.4%

24h Volume

$4.82M

+18.6%

24h Trades

18,429

+12.3%

Liquidity

$1.27M

+8.7%

BidsPriceAsks

1,70063.4¢364

1,45863.4¢647

79263.4¢1,918

28863.4¢574

2,03663.4¢214

Spread 0.4¢ (0.40%)

Recent trades

YES4,66063.3¢18m ago

NO75837.0¢17m ago

YES52063.1¢16m ago

YES34262.9¢15m ago

YES1,95263.6¢14m ago

View full feed →

Easy integrationPythonTypeScriptNode.jsREST APIWebSocket

One API. No data stitching.

All prediction market data through a single, unified API.

GET/v1/markets/fed-rate-cut-sep/price

Try it

Request

1curl -X GET https://api.pmaxis.com/v1/markets/fed-rate-cut-sep/price \
2  -H "Authorization: Bearer YOUR_API_KEY" \
3  -H "Accept: application/json"

Response200 OK

1{
2  "market": "fed-rate-cut-sep",
3  "price": 0.634,
4  "volume_24h": 4820000,
5  "timestamp": 1786968121
6}

View full API documentation →

Don't take our word for it.
Explore the data.

Search any market. Instantly get the data that moves it.

/

Popular markets

Economics

Fed rate cut before September?

Price

63.4¢+2.4%

24h Volume

$4.82M

Liquidity

$1.27M

Orderbook

Bid (YES)Ask (NO)

63.0¢1,70036463.8¢

62.6¢1,45864764.2¢

62.2¢7921,91864.6¢

61.8¢28857465.0¢

61.4¢2,03621465.4¢

Spread0.4¢ (0.40%)

Recent trades

SidePriceSizeTime

YES63.3¢$4.7K18m ago

NO37.0¢$75817m ago

YES63.1¢$52016m ago

YES62.9¢$34215m ago

YES63.6¢$2.0K14m ago

Real-time data. Unified API. Build with confidence.

Built on the market.

Markets

On-chain trades

<100ms

Latency

24/7

Live stream

Prediction Markets

├──Markets

├──Prices

├──Trades

├──Orderbooks

├──Signals

├──On-chain

└──Historical

Stop stitching prediction-market data together.

Without PMAxis

Polymarket API

RPC

WebSocket

Normalization

Database

Historical storage

Your own processing

With PMAxis

Your application

PMAxis

Structured prediction-market data

Start with the data. Scale when you need it.

Free

API access
REST
WebSockets
Limited rate
Limited history

Get your free API key

Hobby

$29/mo

Everything in Free
Higher rate limits
Full orderbook depth
90-day history
Email support

Start Hobby

ProPopular

$199/mo

Everything in Hobby
Full historical data
Webhooks
Priority rate limits
Priority support

Start Pro

Custom

Let's talk

Custom rate limits
Dedicated infrastructure
SLA & uptime guarantee
Custom integrations
Dedicated support

Contact sales

Build on prediction markets.

PMAxis gives your application the data layer it needs.

Get your free API key Explore the docs

Coming soon

From the blog.

Engineering deep dives, API updates, and what we're building next — launching soon.

Coming soon

Engineering

How we index every prediction market in real time

Coming soon

Guides

Building a trading bot on top of the PMAxis API

Coming soon

Product

The data layer for prediction markets.

Fed rate cut before September?

One data layer. Every signal you need.

MARKETS

ORDERBOOKS

TRADES

SIGNALS

ON-CHAIN

From market event to structured data.

Build on top of the market.

One API. No data stitching.

Don't take our word for it.Explore the data.

Fed rate cut before September?

Built on the market.

Stop stitching prediction-market data together.

Start with the data. Scale when you need it.

Build on prediction markets.

From the blog.

How we index every prediction market in real time

Building a trading bot on top of the PMAxis API

What's next: webhooks, historical data and more

Don't take our word for it.
Explore the data.