posterly

create_posts_batch

Create 1-25 scheduled or immediate social posts in one API request. DESTRUCTIVE WRITE: show the user every post's account/platform, caption or thread text, scheduled time, media, settings, and workspace, then get explicit confirmation for the whole batch before calling. Third-party media URLs are copied into posterly storage before each post is saved. Partial success is possible; failed items return their array index.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`posts`	Yes
`confirm`	Yes	Must be true after the user explicitly confirms every post in the batch.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 9, 2026

addedInput schema / properties / posts / items / properties / platform_settings / properties / article

Added value: +{
+  "description": "X Article (needs an X Premium account): publish the caption as an Article. Pass null to turn Article mode off. The caption is the Markdown body (headings, bold, italic, lists, quotes, code blocks, tables, dividers); reference attached images with ![caption](media:1). Cannot be combined with poll, thread_posts, paid_partnership, video, or GIF.",
+  "properties": {
+    "cover": {
+      "description": "Use the first attached image as the Article cover (default) or none.",
+      "enum": [
+        "first_image",
+        "none"
+      ],
+      "type": "string"
+    },
+    "title": {
+      "description": "Article title (required).",
+      "type": "string"
+    }
+  },
+  "required": [
+    "title"
+  ],
+  "type": [
+    "object",
+    "null"
+  ]
+}

First observedOct 8, 2026

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