equity_history() fails with KeyError: 'data' - NSE API endpoint returns 404

[AJ]

Summary

The equity_history() function in nsepython fails because NSE has removed their free historical equity data API endpoint. The endpoint /api/historical/cm/equity now returns HTTP 404 (Resource not found).

Environment

• NSEPython Version: 2.97 (latest)
• Python Version: 3.13
• Operating System: Windows 11
• Date: January 8, 2026

Steps to Reproduce

from nsepython import equity_history

This call fails with KeyError: 'data'

result = equity_history('SBIN', 'EQ', '01-12-2025', '08-12-2025')

Actual Behavior

Traceback (most recent call last):
File "rahu.py", line 580, in equity_history_virgin
return pd.DataFrame.from_records(payload["data"])
~~~~~~~^^^^^^^^
KeyError: 'data'

Root Cause:

The URL https://www.nseindia.com/api/historical/cm/equity?symbol=SBIN&series=["EQ"]&from=01-12-2025&to=08-12-2025 returns HTTP 404 with HTML response:

<title>Resource not found</title> Resource not found

The nsefetch() function catches the JSONDecodeError and returns {} (empty dict), which then causes payload["data"] to raise KeyError.

Expected Behavior

Either:

• The function should return an empty DataFrame with a clear warning message
• Or throw a more descriptive exception explaining the API is no longer available

Additional Context

What Still Works:

• index_history() for NIFTY 50, SENSEX, etc. works perfectly
• The endpoint /api/chart-databyindex for indices is still active

What's Broken:

• /api/historical/cm/equity endpoint for equity historical data (returns 404)