Broker Auth: Fyers¶

Authenticate and place a demo order via the FYERS API over your static IP.

Part 05 of 37 in the ServLoci algo/options trading notebook series — full index in notebooks/README.md.

Setup¶

# Get your dedicated static IPv6 + SOCKS5 credentials free:
#   https://comm.servloci.in/register        (or /auth/google?free=1 for an instant trial)
# Your api_key / api_secret pair shows up in the portal after signup:
#   https://comm.servloci.in/user
!pip install -q "requests[socks]"
!curl -sL https://comm.servloci.in/sdk/servloci.py -o servloci.py

import os
from servloci import ServLoci

SERVLOCI_API_KEY = os.environ.get("SERVLOCI_API_KEY", "dhan:1000000001")   # broker:client_id
SERVLOCI_API_SECRET = os.environ.get("SERVLOCI_API_SECRET", "")            # from the portal — leave blank to run this notebook in demo mode

sl = None
if SERVLOCI_API_SECRET:
    sl = ServLoci(api_key=SERVLOCI_API_KEY, api_secret=SERVLOCI_API_SECRET)
    print("ServLoci configured:", sl.host, sl.port)
else:
    print("SERVLOCI_API_SECRET not set — running in demo mode (no live proxy calls).")

Support level: Confirmation flow for individual and family accounts — FYERS support verifies the requesting IP before enabling API trading.

Indian broker APIs authenticate trading sessions with an OAuth-style two-step handshake, not a single long-lived key. You redirect the user (in practice, yourself) to a broker login page, the broker redirects back with a short-lived request_token, and you exchange that token — together with your app's api_secret — for an access_token that's valid for actual order calls. The api_key/api_secret pair identifies your app; the access_token identifies an authenticated session and, at every broker covered here, expires at end of trading day regardless of activity. That forced daily re-login is a deliberate session-security control, common across SEBI-regulated broker APIs, so a stolen access token has a shelf life measured in hours, not indefinitely.

FYERS sits between Kite's instant self-service and Dhan's ticket queue: API access is enabled per app, but support verifies the requesting IP before switching it on, including for family/sub-accounts trading under one umbrella. FYERS also publishes a WebSocket feed alongside the REST API, which matters once you move from polling (notebook 11) to a lower-latency data path.

if sl:
    sl.attach()  # BEFORE importing fyers-apiv3 — it creates a requests.Session at import time
    from fyers_apiv3 import fyersModel

    fyers = fyersModel.FyersModel(client_id=os.environ.get("FYERS_CLIENT_ID", ""),
                                   token=os.environ.get("FYERS_ACCESS_TOKEN", ""), is_async=False)
    print("Fyers client ready")
    # order = fyers.place_order(data={"symbol": "NSE:INFY-EQ", "qty": 1, "type": 2,
    #                                  "side": 1, "productType": "INTRADAY"})
else:
    print("Demo mode — set SERVLOCI_API_SECRET above to run this against your Fyers account.")

Install the broker SDK separately: !pip install -q fyers-apiv3. Full whitelist steps: https://comm.servloci.in/docs/brokers.

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Try the concepts above interactively: Options Strategy Builder · Docs · Get your static IP