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🗄️Developer Resource // JSON Endpoint

CSML JSON Data API

Access 362 data points for CSML spanning 7 years (2017–Apr 15, 2024). Optimized JSON format (53.0 KB).

GET /api/tickers/CSML/json● 200 OK (Live)
{
  "symbol": "CSML",
  "timestamp": "2026-01-22T03:03:12.531Z",
  "price": 34.9484,
  "change_24h": 0.7059826991015216,
  "history_sample": [
    {
      "date": "2017-05-15",
      "open": 25.18,
      "high": 25.22,
      "low": 24.45,
      "close": 24.66,
      "volume": 2535607
    },
    {
      "date": "2017-05-22",
      "open": 24.77,
      "high": 25,
      "low": 24.75,
      "close": 24.86,
      "volume": 54190
    }
  ]
}
💻

Import via CLI

Don't scrape. Use our open-source importer to normalize this dataset directly into your local database.

npx pocket-portfolio --import CSML
🛡️

Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync CSML.json updates to your private Google Drive for backtesting and compliance.

Enable Sovereign Sync

Includes unlimited API calls & historical CSV exports.

Dataset Specifications

  • Format: Standardized JSON (OHLCV)
  • Frequency: End-of-Day (EOD) + Real-time delay
  • Adjustments: Split-adjusted, Dividend-adjusted
  • Source: Multi-provider aggregation (AlphaVantage, Yahoo fallback)