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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July 20th, 2026
Added
New Corporate Actions events streaming endpoint (SSE)
July 16th, 2026
Improved
"order_id" path parameter now typed as a UUID
July 16th, 2026
Improved
"phone_number" on the Contact schema is now optional and nullable
July 16th, 2026
Improved
Deprecated asset fields are now optional in responses
July 16th, 2026
Added
New Tokenization Request lookup endpoints
July 16th, 2026
Added
Idempotent locate creation with Idempotency-Key
July 15th, 2026
Improved
"event_id" is now optional on stream event schemas
July 15th, 2026
Added
Adds advanced_instructions for Direct Market Access (DMA) orders
July 14th, 2026
Improved
"settle_date" on the Journal schema is now optional and nullable
July 14th, 2026
Improved
"user_configurations" is now optional on the TradeAccount schema
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