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Instrument Master API extremely slow/hanging (requests.get blocks while downloading)

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    Hello SmartAPI Team,
    Since today (14 Jan 2026), we are facing a serious issue with the Instrument Master download endpoint.

    Issue

    The Instrument Master file download is hanging / stalling and not completing (download stream gets stuck). This is blocking all applications which depend on master file loading — including collector pipelines and realtime websocket token bootstrapping.

    Observations

    Login/authentication is successful.

    Issue happens specifically during the instrument master download step.

    Download does not complete and keeps waiting indefinitely (stuck mid-stream).

    This was working normally on previous days; issue started today.

    Impact

    This is a production blocker because without instrument master:

    option token mapping cannot be done,

    expiry/token bootstrapping cannot be completed,

    realtime subscriptions cannot start.

    Request

    Kindly confirm:

    Is there any outage / latency issue in the Instrument Master endpoint today?

    Any changes in master URL / backend caching / format?

    ETA for resolution or alternate stable endpoint for master download.

    Please treat this as high priority since it impacts all applications dependent on SmartAPI master file.

    Thanks.

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