Unofficial CSE API Docs

POST /chartData

charts probe ok

Index-scale series. symbol= is IGNORED — do not use for per-stock charts.

Used by UI: —

Last probe status: 200 · expect [200]

curl

curl -sS -X POST 'https://www.cse.lk/api/chartData' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  -H 'Origin: https://www.cse.lk' -H 'Referer: https://www.cse.lk/' \
  -d 'chartId=1&period=1'

Known failures

• POST JSON → 400
• Missing chartId → 400

Fields

• See sample JSON

Sample

{
  "_probe": {
    "id": "chartData",
    "url": "https://www.cse.lk/api/chartData",
    "method": "POST",
    "status": 200,
    "verified_at": "2026-07-16T16:34:36.633592+00:00",
    "fingerprint": {
      "type": "array",
      "len": 297,
      "item_keys": [
        "d",
        "pc",
        "v"
      ]
    }
  },
  "response": {
    "_truncated": true,
    "_note": "payload exceeded 12000 bytes; keys only",
    "keys": "list",
    "preview": "[{\"d\": 1784174400000, \"v\": 21417.8, \"pc\": null}, {\"d\": 1784174460000, \"v\": 21445.28, \"pc\": null}, {\"d\": 1784174520000, \"v\": 21443.21, \"pc\": null}, {\"d\": 1784174580000, \"v\": 21442.9, \"pc\": null}, {\"d\": 1784174640000, \"v\": 21442.86, \"pc\": null}, {\"d\": 1784174700000, \"v\": 21443.49, \"pc\": null}, {\"d\": 1784174760000, \"v\": 21449.05, \"pc\": null}, {\"d\": 1784174820000, \"v\": 21448.04, \"pc\": null}, {\"d\": 1784174880000, \"v\": 21449.53, \"pc\": null}, {\"d\": 1784174940000, \"v\": 21454.24, \"pc\": null}, {\"d\": 1784175000000, \"v\": 21450.26, \"pc\": null}, {\"d\": 1784175060000, \"v\": 21444.95, \"pc\": null}, {\"d\": 1784175120000, \"v\": 21444.26, \"pc\": null}, {\"d\": 1784175180000, \"v\": 21447.48, \"pc\": null}, {\"d\": 1784175240000, \"v\": 21452.51, \"pc\": null}, {\"d\": 1784175300000, \"v\": 21449.54, \"pc\": null}, {\"d\": 1784175360000, \"v\": 21444.86, \"pc\": null}, {\"d\": 1784175480000, \"v\": 21442.02, \"pc\": null}, {\"d\": 1784175540000, \"v\": 21440.18, \"pc\": null}, {\"d\": 1784175600000, \"v\": 21437.77, \"pc\": null}, {\"d\": 1784175660000, \"v\": 21442.49, \"pc\": null}, {\"d\": 1784175720000, \"v\": 21445.61, \"pc\": null}, {\"d\": 1784175780000, \"v\": 21447.64, \"pc\": null}, {\"d\": 1784175840000, \"v\": 21446.35, \"pc\": null}, {\"d\": 1784175900000, \"v\": 21440.6, \"pc\": null}, {\"d\": 1784175960000, \"v\": 21437.58, \"pc\": null}, {\"d\": 1784176020000, \"v\": 21429.1, \"pc\": null}, {\"d\": 1784176080000, \"v\": 21430.38, \"pc\": null}, {\"d\": 1784176140000, \"v\": 21436.17, \"pc\": null}, {\"d\": 1784176200000, \"v\": 21435.5, \"pc\": null}, {\"d\": 1784176260000, \"v\": 21441.86, \"pc\": null}, {\"d\": 1784176320000, \"v\": 21441.4, \"pc\": null}, {\"d\": 1784176380000, \"v\": 21443.02, \"pc\": null}, {\"d\": 1784176440000, \"v\": 21444.1, \"pc\": null}, {\"d\": 1784176500000, \"v\": 21449.0, \"pc\": null}, {\"d\": 1784176560000, \"v\": 21451.35, \"pc\": null}, {\"d\": 1784176620000, \"v\": 21455.27, \"pc\": null}, {\"d\": 1784176680000, \"v\": 21456.25, \"pc\": null}, {\"d\": 1784176740000, \"v\": 21457.03, \"pc\": null}, {\"d\": 1784176800000, \"v\": 21454.59, \"pc\": null}, {\"d\": 1784176860000, \"v\": 21451.68, \"pc\": null}"
  }
}