🗄️Developer Resource // JSON Endpoint

COSUSD JSON Data API

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

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

Chart where your browser is the vault — wire this endpoint to the Terminal.
Minimal cloud, maximal local control — start from this stateless slice.

Download as CSV

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

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

Tired of exporting to Excel? Track COSUSD and analyze your portfolio locally with Pocket Portfolio.

Start Free — Local First
{
  "symbol": "COSUSD",
  "timestamp": "2026-06-07T03:14:41.812Z",
  "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 COSUSD
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Need to archive this data?

Don't rely on ephemeral endpoints. Automatically sync COSUSD.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