Posts made by Moderator_3

@moderator_3 Tentative Go Live date for IPv6 support is 15th Dec 2026.

@jatin-jain Replied on your other thread.

@jatin-jain Personal use is permitted. However at this point it still needs a static IP.

@ahammedameen This is NOT allowed. Angel One as a broker can provide price feed data to our users (you) but this cannot be further re-distributed by Angel One's end user.

We will share an update on this shortly. Thanks for your patience.

@deepak986786 This is NOT allowed. Angel One as a broker can provide price feed data to our users but this cannot be further re-distributed by Angel One's end user.

@appsparkler can you please check if you are still facing this issue. if you are please email on smartapi@angelone.in with your client id?

@rakeshkr114 can you please check if you are still facing this issue. if you are please email on smartapi@angelone.in with your client id?

Hi Dhan0114, Hope your query is resolved by Rudra's answer. Thanks Rudra for making my job easier :)

Dear Smart API users,
Sincere apologies for the delayed responses to the issues you are facing. We will take this up in priority and update the forum on the resolution.
Thanks,
Smart API Admin

Hi @pari. Sincere Apologies for the delay. We will look into the scripmaster errors and update this thread.
Thanks for your patience.
Smart API Admin

Thanks @rudra for the update. Closing this thread.

Hi RakeshKumar 0,
Kindly email you client id to smartapi@angelone.in and we will investigate the issue and share an update with you.
Thanks,
Smart API Admin

Hi Rudra,
Thanks for your suggestions. We will look into these and prioritise them after analysing the impact. Much appreciated.
Thanks,
Smart API Admin

Hi @varadraj_18 ,
Kindly email your client id to smartapi@angelone.in and we will investigate further and get back to you.
Thanks,
Smart API Admin

Static IP is required across all SmartAPI app types, not only for order placement. The NSE framework mandates it for order placement; we apply it to all API access as a condition of use.

SmartAPI is built to support trading by Angel One clients, and historical data is the most resource-intensive part of it. Clients who are placing orders through the API rely on those endpoints immediately beforehand, so we set access conditions with that in mind.

We recognise this rules out some legitimate data-only use. We'll be working with our tech and compliance counterparts on a solution to accommodate such cases in future.

@rigseo As of now Static IP is required to access any smartAPI

What is CAS?

SEBI has introduced a new 20-minute auction window at the end of the trading day to determine the closing price for stocks that have F&O contracts. This replaces the earlier method of using the last 30 minutes of continuous trading to arrive at the closing price. CAS goes live from 03 Aug 2026.

What are the changes in schedule and timing?

The updated market timings are as follows:

1. 3.15-3.20 pm: Reference price is calculated. Order entry via SmartAPI will be rejected in this phase.

2. 3.20-3.25 pm: Limit and Market orders can be placed, modified, or cancelled.

3. 3.25-3.30 pm: No changes or cancellations on Market Orders. Limit orders can still be placed/modified. Random close anytime between 3:28 pm and 3:30 pm.

4. 3.30-3.35 pm: Orders are matched against each other, and the closing price is set.

5. 3.35-3.50 pm: Transition from CAS to Post-closing session

6. 3.50-4.00 pm: Trades settle at the Equilibrium Price discovered in the auction.

What order type restrictions will be in place?

• Stop-loss and Iceberg orders for CAS-eligible stocks are disallowed between 3:15-3:40 pm.

• After 3:25 pm, Market orders can no longer be modified or cancelled – only added or changed as Limit orders.

• F&O trading in NFO and BFO will be extended till 3:40 pm on all trading days.

• Changes to post-closing session apply to all stocks, regardless of whether they are CAS-eligible or not.

Changes in Auto-Square Off Timings

For intraday trades, the auto-square off timings will see the following changes from 03 Aug 2026.

• Equity Robo Orders: 3:05 pm

• Equity MIS Orders: 3:10 pm

• Equity F&O Orders: 3:20 pm

How to check if a stock is CAS-eligible?

A new field, is_cas_enabled, is now available in the instrument master response. Check out the sample:

{  
 
  "token" : "99926000",  
 
  "symbol" : "Nifty 50",  
 
  "name" : "NIFTY",  
 
  ...  
 
  "is_cas_enabled" : true 
 
}

A new field, referenceLimitPrice in our Market Data API can be used to get the Reference Price. Here’s a sample response:

{  
 
"status": true,  
 
...  
 
"high": "191.25",  
 
"low": "185",  
 
"close": "187.80",  
 
"referenceLimitPrice": "191",  
 
}

What are “Reference Price” and “Equilibrium Price”?

The Reference Price is fixed at the start of CAS – it's the VWAP of trades between 3:00-3:15 pm (or LTP/previous close if no trades), and it sets the ±3% band within which CAS orders can be placed.

The Equilibrium Price is discovered at the end of CAS – it's the price at which the maximum quantity of orders placed during the auction get matched, using volume maximisation.

In short: Reference Price is the starting boundary for the auction, Equilibrium Price is its outcome. The Equilibrium Price becomes the stock's closing price for the day; if none is discovered, the Reference Price is used instead.

Where to get more detailed information?

You can view our full API documentation here: https://smartapi.angelone.in/docs/CASDoc

For additional reading:

“NSE To Bring Closing Auction Session: What Does It Mean for Stock Prices and Investors?” on Angel One

“SEBI Introduces Closing Auction Session to Enhance Equity Market Price Discovery” on Angel One

BSE’s official circular published on 10 Jun 2026

NSE’s official circular published on 29 May 2026

SEBI’s official circular published on 16 Jan 2026

How to use smartapi websocket connections?

How to use websocket documentation?