For AI agents: visit https://docs.alpaca.markets/us/v1.1/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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August 5th, 2026
Deprecated
"since_id" and "until_id" on v1 SSE event streams are deprecated
August 5th, 2026
Fixed
JIT limits response schema corrected to match the API
August 5th, 2026
Added
New fields on the batch journal request schema
August 4th, 2026
Removed
Fixed-income market data endpoints removed
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
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