Issue with Definedge API – Unexpected Behavior / Error

Deborah Graves

Hello,
I’ve been integrating the Definedge API into a Python trading bot and running into an authentication issue. I’m able to successfully authenticate and obtain an access token using my client_id and client_secret. However, after about 5 minutes, the token stops working, and every request starts returning this error:

{
  "status": "error",
  "message": "Invalid or expired access token"
}

According to the docs, the token should be valid for at least 30 minutes.

Code Sample:

import requests

BASE_URL = "https://api.definedgesecurities.com"

login_payload = {
    "client_id": "my_client_id",
    "client_secret": "my_secret",
    "grant_type": "client_credentials"
}

token_res = requests.post(f"{BASE_URL}/auth/token", data=login_payload)
token = token_res.json().get("access_token")

headers = {"Authorization": f"Bearer {token}"}
r = requests.get(f"{BASE_URL}/market/quotes?symbol=NIFTY", headers=headers)
print(r.json())

Has anyone else faced this premature token expiry issue? Do I need to explicitly refresh the token with another API call, or is there a configuration I might be missing on the Definedge side?

Issue with Definedge API – Unexpected Behavior / Error

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