For AI agents: the docs index is at https://docs.alpaca.markets/us/v1.1/llms.txt. The index for every project on this site is at https://docs.alpaca.markets/llms.txt. Append .md to any documentation page URL to get its markdown version.
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October 22nd, 2026
Removed
Crypto withdrawal endpoint removed from the Trading API
October 21st, 2026
Improved
"timeframe" on portfolio history is now an enum
October 21st, 2026
Fixed
"parent_id" is now optional on fee activity events
October 20th, 2026
Fixed
Order side enum corrected to "buy" and "sell" only
October 19th, 2026
Improved
Portfolio history timestamps documented as 64-bit integers
October 16th, 2026
Fixed
Beneficiary schema corrected to match API behavior
October 15th, 2026
Improved
Error responses documented on portfolio history endpoints
October 12th, 2026
Added
New endpoint for signing party- and account-level agreements
October 9th, 2026
Fixed
Account, order, and watchlist schema types corrected
October 9th, 2026
Added
ACATS status events on the admin-actions SSE stream
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