Polymarket historical orderbook

curl --request GET \
  --url https://api.probsights.com/historical/polymarket/orderbook \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api.probsights.com/historical/polymarket/orderbook"

headers = {"X-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.probsights.com/historical/polymarket/orderbook', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

GET

historical

polymarket

orderbook

Polymarket historical orderbook

curl --request GET \
  --url https://api.probsights.com/historical/polymarket/orderbook \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api.probsights.com/historical/polymarket/orderbook"

headers = {"X-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.probsights.com/historical/polymarket/orderbook', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

Full orderbook snapshots with bids, asks, and derived best bid/ask per token. Polymarket markets have two tokens (YES and NO) per condition; each snapshot row is for a single token. Use asset_id to filter to one token, or omit it to return both.

Request

https://api.probsights.com/historical/polymarket/orderbook

Query parameters

market_id

string

required

Polymarket condition ID (0x...). Also accepts the numeric source_market_id.

asset_id

string

CLOB token ID. Omit to return both YES and NO tokens.

start_time

string

Range start in Unix milliseconds. Must be set with end_time.

end_time

string

Range end in Unix milliseconds.

granularity

string

default:"1m"

Bucket size for range queries: 1m or 5m.

limit

integer

default:"100"

Max rows per page (1–200).

pagination_key

string

Cursor from the previous response.

Examples

Latest snapshots

curl -H "X-API-Key: YOUR_API_KEY" \
  "https://api.probsights.com/historical/polymarket/orderbook?market_id=0xb99571ae54fae7610197d6de9471154ca0d1b5457a9d5c24abe29cf26b01d95b&limit=5"

import requests

response = requests.get(
    "https://api.probsights.com/historical/polymarket/orderbook",
    headers={"X-API-Key": "YOUR_API_KEY"},
    params={
        "market_id": "0xb99571ae54fae7610197d6de9471154ca0d1b5457a9d5c24abe29cf26b01d95b",
        "limit": 5,
    },
)

Kalshi historical orderbook Unified historical orderbook

⌘I

Getting started

Search

Historical

Arbitrage

Whales

Polymarket historical orderbook

Request

Query parameters

Examples

Latest snapshots

​Request

​Query parameters

​Examples

​Latest snapshots

Request

Query parameters

Examples

Latest snapshots