Historical API Playground
Point-in-time replay of every live analytics endpoint. Pick an endpoint, set an at timestamp, and get back exactly what api.flashalpha.com would have returned at that minute. Same response shape as live - same SDK works.
Historical API is Alpha-tier only. Any request without an Alpha key returns 403 tier_restricted. Quota is shared with the live API.
Authentication
Get AlphaX-Api-Key
Same key as the live API. Stored locally in your browser; never sent to flashalpha.com.
Parameters
ET wall-clock. yyyy-MM-ddTHH:mm:ss for intraday, or yyyy-MM-dd (defaults to 16:00 ET close). Intraday minute-resolution on greeks & spot; EOD on OI/SVI/macro.
cURL
Response
No replay yet
Hit Replay to send the historical request
Want the full spec - intraday vs EOD, coverage table, known gaps, error shapes? Read the Historical API docs →
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