For AI agents: visit https://docs.alpaca.markets/us/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI. Append .md to any documentation page URL to get its markdown version.
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Changelog
August 4th, 2026
Improved
Trading request and response schemas extracted into reusable components
August 3rd, 2026
Removed
Legacy v1 trade events endpoint removed
August 3rd, 2026
Added
Adds "FI" (Fixed Income Interest) activity sub-type
August 3rd, 2026
Improved
Idempotency-Key support on tokenization mint and redeem endpoints
August 1st, 2026
Added
New OCT activity type for on-chain transactions
July 30th, 2026
Added
New "accepted" trade update event type
July 30th, 2026
Added
New "data_quality" filter to include incomplete corporate actions
July 30th, 2026
Added
New MEM activity detail type on Activity V2 events
July 30th, 2026
Added
ISIN identifiers added to SSE v2 corporate action events
July 29th, 2026
Improved
Portfolio history examples now document cashflow data
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