🗄️Developer Resource // JSON Endpoint

CSTR JSON Data API

Absolute endpoints (copy‑paste)
JSON:https://www.pocketportfolio.app/api/tickers/CSTR/json?range=max
CSV:https://www.pocketportfolio.app/api/tickers/CSTR/csv?range=max

Instant, normalized JSON data for CSTR. Free API for developers. No login required.

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Download as CSV

Prefer CSV format? Download CSTR historical data as a CSV file for Excel, Google Sheets, or any spreadsheet application.

GET /api/tickers/CSTR/json● 200 OK (Live)

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{
  "symbol": "CSTR",
  "timestamp": "2026-06-07T05:02:57.972Z",
  "price": null,
  "change_24h": null,
  "history_sample": []
}
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Import via CLI

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

npx pocket-portfolio --import CSTR
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Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync CSTR.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)
> system_ready. Initialize Sovereign reasoning for this asset?[Y]— open Terminal