National Stock Exchange of India

NSE Offer For Sale (OFS) Web API

JSON over HTTPS Web API for the NSE Offer-For-Sale platform, used by members to place, modify, cancel and query OFS orders and to stream market messages. Bearer access-token authentication with a refresh-token endpoint; includes a server-sent message stream (GET /messaging/message-stream). Documented in the "OFS-WEB API" PDF on the NSE trading protocols page.

GitHub

Documentation

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Documentation
https://nsearchives.nseindia.com/web/mediaattachment/2026-05/OFS-WEB_API_Ver1.3.4_20260519122437.pdf

API entry from apis.yml

apis.yml Raw ↑ 
name: NSE Offer For Sale (OFS) Web API
description: JSON over HTTPS Web API for the NSE Offer-For-Sale platform, used by members to place, modify,
  cancel and query OFS orders and to stream market messages. Bearer access-token authentication with a
  refresh-token endpoint; includes a server-sent message stream (GET /messaging/message-stream). Documented
  in the "OFS-WEB API" PDF on the NSE trading protocols page.
humanURL: https://www.nseindia.com/static/trade/platform-services-neat-trading-system-protocols
baseURL: https://eofs.nseindia.com/api/
tags:
- Offer For Sale
- Orders
- Equities
properties:
- type: Documentation
  url: https://nsearchives.nseindia.com/web/mediaattachment/2026-05/OFS-WEB_API_Ver1.3.4_20260519122437.pdf