Notion changed its API changelog

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+August 25, 2026
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+ATOMIC BATCHED CONTENT UPDATES IN NOTION MCP
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+notion-update-page calls that use the update_content command now apply every content-changing replacement in the batch or none of them. Previously, when one old_str matched no page content and another one in the same call did, the matching replacements were saved and the call returned success — so a batch that removed content in one operation and reinserted it in another could drop that content. These calls now return a validation_error naming the old_str that wasn’t found, and the page is left unchanged. Operations whose old_str and new_str are identical are ignored without checking for a match. See Supported tools for the tool’s matching rules.old_str must also be a non-empty string. Empty values were previously ignored, which silently skipped the replacement; they now fail validation on both notion-update-page and Update a page’s content as markdown.
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 August 20, 2026
 
 NOTION AGENT APIS IN PUBLIC BETA