Guide
Threads API: publishing posts, limits and the 30-second wait
Threads’ API publishes in two calls, create a container on /threads and then publish it on /threads_publish, with a pause in between while media is processed.
Two calls, one pause
Meta’s documentation describes POST /{threads-user-id}/threads to create a media container and POST /{threads-user-id}/threads_publish to publish it with the container’s ID.
The same page says to wait on average 30 seconds before publishing, so the server can process what you uploaded.
Permissions
Two permissions appear: threads_basic and threads_content_publish.
What a post can hold
Text, images, videos and carousels of up to 20 items are listed.
Text posts are limited to 500 characters, and emoji are counted by their UTF-8 bytes rather than as one character each.
The daily ceiling
The documentation gives 250 published posts per profile within 24 hours, and a carousel counts as one.
From Dripost
Threads is one of the six places a Dripost post can go. You connect the account once and send the post to Dripost’s API (dripost.com/docs/api) with the other platforms in the same request.
If an AI assistant makes the post through the MCP server at mcp.dripost.com, it starts as a draft unless the owner has ticked the separate post permission.
Sources
Questions
How long is a Threads text post allowed to be?
500 characters, per Meta’s documentation.
Why wait before publishing a Threads container?
Meta says to wait on average 30 seconds so uploads can be processed.
Can Dripost post to Threads?
Yes, Threads is one of the platforms Dripost posts to.