Unofficial CSE API Docs

POST /orderBook

prices probe ok

Public order-book totals + live bid/ask levels for one symbol.

Used by UI: Order book / market depth widget

Last probe status: 200 · expect [200]

curl

curl -sS -X POST 'https://www.cse.lk/api/orderBook' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -H 'Origin: https://www.cse.lk' -H 'Referer: https://www.cse.lk/' \
  -d 'symbol={{symbol}}'

Known failures

• None recorded

Fields

• reqOrderBookTotal.totalBids
• reqOrderBookTotal.totalAsks
• reqOrderBook[].price
• reqOrderBook[].quantity
• reqOrderBook[].buySell — side flag, meaning not yet confirmed — only value 1 observed so far

Sample

{
  "_probe": {
    "id": "orderBook",
    "url": "https://www.cse.lk/api/orderBook",
    "method": "POST",
    "status": 200,
    "verified_at": "2026-07-16T16:34:33.860624+00:00",
    "fingerprint": {
      "type": "object",
      "keys": [
        "reqOrderBook",
        "reqOrderBookTotal"
      ]
    }
  },
  "response": {
    "reqOrderBookTotal": {
      "id": 46218574,
      "totalBids": 2188259,
      "totalAsks": 1370786
    },
    "reqOrderBook": [
      {
        "id": 46222410,
        "securityId": 297,
        "board": "-1",
        "splits": 3,
        "buySell": 1,
        "priceLevel": 1,
        "yield": 1.0,
        "price": 20.0,
        "quantity": 2205.0
      }
    ],
    "_truncated": {
      "list_key": "reqOrderBook",
      "kept": 1,
      "original_len": 1
    }
  }
}