Threads Post

Create and schedule posts on Meta's Threads using the Publora MCP server. Supports single posts, image carousels (2-20 images) and reply control. Multi-part threading is disabled by the platform connection right now.

Prerequisites

Plans: Works on the free Starter plan. Current limits and pricing: publora.com/pricing.

Getting Started

1. Create account at publora.com/register (free)
2. Connect Threads via Instagram OAuth in Publora Dashboard
3. Get API key at app.publora.com/dashboard/api
4. Connect your agent to the MCP server at https://mcp.publora.com, authenticating with Authorization: Bearer sk_YOUR_API_KEY. In Claude Code:

claude mcp add publora --transport http https://mcp.publora.com \
  --header "Authorization: Bearer sk_YOUR_API_KEY"

Claude Desktop, Cursor, Codex, OpenClaw and the claude.ai connector each need a different config file or flow: see client setup for the exact path and snippet.

REST API Fallback

If MCP is unavailable, use the REST API directly:

Base URL: https://api.publora.com/api/v1

Authentication: x-publora-key header

# Get connected platforms
curl -X GET "https://api.publora.com/api/v1/platform-connections" \
  -H "x-publora-key: sk_your_api_key"

# Create a post
curl -X POST "https://api.publora.com/api/v1/create-post" \
  -H "x-publora-key: sk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "platforms": ["threads-12345"],
    "content": "Your post content",
    "scheduledTime": "2026-03-25T10:00:00Z"
  }'

Platform ID Format: threads-{id} (from /platform-connections)

📖 Docs: docs.publora.com

Platform Limits

Feature	Limit
Characters per post	500
Hashtags	1 per post maximum
Links	5 per post maximum
Images per carousel	2-20
Image size	8 MB
Image formats	JPEG, PNG (WebP auto-converted)
Video duration	5 minutes
Video size	1 GB
Video formats	MP4, MOV
Posts per day	250
Replies per day	1,000

Available Tools

create_post

Create a new Threads post or thread.

Parameters:

• platforms: Array with your Threads connection ID (e.g., ["threads-12345"])
• content: Post text (auto-threads if over 500 chars)
• scheduledTime: ISO 8601 UTC datetime. Optional: omit it and the post is created as a draft. Send a future time to schedule. A time five or more minutes in the past is rejected with SCHEDULED_TIME_IN_PAST, so for immediate posting use the current time plus a minute.
• mediaUrls: up to 10 public https image or video URLs. Publora downloads them server-side and attaches them before validation, so media and scheduling happen in one call. This is the one-shot alternative to the draft then get_upload_url then complete_media flow. Ingestion is rate-limited to 60 URLs per hour.

get_upload_url

Get a presigned URL to upload images.

complete_media

Finalize a file uploaded through get_upload_url, after the presigned PUT succeeds. Optional, because scheduling also finalizes pending media, but calling it early surfaces format and probe errors before publish. Not needed for media attached with mediaUrls.

Parameters:

• mediaId: the id returned by get_upload_url

list_connections

List your connected accounts with their platform IDs. Call this first and copy the IDs verbatim; they are never guessable.

list_posts / get_post / update_post / delete_post

Manage scheduled and draft posts. update_post also patches content and platforms on a draft or scheduled post, so fixing a typo or retargeting no longer means delete and recreate. delete_media and prune_media_reference clean up uploaded files.

Long Content

Threads posts are capped at 500 characters and Publora's multi-part threading is currently disabled while the Threads app connection is being restored. Content over the limit is not split automatically, so:

• Keep the post inside 500 characters, or
• Publish the parts yourself as separate posts, or
• Move the long-form version to a platform that threads today (X) and link to it.

Manual --- separators and [1/3] markers are preserved as written but do not create a connected reply chain right now. Contact support@publora.com for the restore timeline.

Reply Control

Control who can reply to your posts via REST API platformSettings:

Value	Description
"" (empty)	Default platform behavior (anyone can reply)
"everyone"	Explicitly allow anyone to reply
"accounts_you_follow"	Only accounts you follow can reply
"mentioned_only"	Only mentioned accounts can reply

Note: platformSettings is not available via MCP - use REST API for reply control.

Important Restrictions

1. Single hashtag limit: Threads allows maximum 1 hashtag per post. Additional hashtags are ignored by the platform.

2. No post editing: Once posted, Threads posts cannot be edited via API. Delete and repost if needed.

3. Video carousels not supported: Publora's carousel implementation supports images only. Standalone video posts work normally.

4. Multi-threaded posts temporarily unavailable: Content splitting into multiple connected replies is temporarily disabled. Single posts and carousels continue to work.

Examples

Simple Text Post

Post this to Threads:
"Just discovered an amazing productivity hack that saved me 2 hours today. The key is batching similar tasks together."

Image Carousel

Create a Threads carousel with these 5 product evolution screenshots.
Caption: "From concept to launch - our 6-month journey. #buildinpublic"

Note: Requires 2-20 images. Videos in carousels are not supported.

Long Content (published as separate posts)

Threading is disabled, so ask for the parts explicitly:

Post this to Threads as separate posts:
"Thread: 7 mistakes I made as a first-time founder

---

1. Hiring too fast. We went from 2 to 15 in 3 months. The culture suffered.

---

2. Ignoring unit economics. Revenue felt great until we calculated CAC..."

Scheduled Post

Schedule this for tomorrow at 10 AM:
"Monday motivation: The best time to start was yesterday. The second best time is now."

Best Practices

1. Hook first: First 2 lines determine engagement - make them count
2. Optimal length: 100-250 characters for single posts perform well
3. Native content: Original, conversational posts are rewarded
4. Single hashtag: Use one highly relevant hashtag (platform limit)
5. No edit option: Double-check content before posting

Timing

• Best times: 7-9 AM, 12-1 PM, 7-9 PM in target timezone
• Frequency: 1-3 posts per day for growth
• Consistency: Regular posting signals active account

Engagement

• Reply to comments within first hour
• Cross-reference your Instagram (accounts are linked)
• Use relevant topics/keywords for discovery

Troubleshooting

Error	Cause	Solution
"Account not connected"	Threads/Instagram OAuth expired	Reconnect via Publora dashboard
"Content too long"	Post exceeds 500 chars and threading failed	Manually add --- breaks
"Media upload failed"	Wrong format or size	Check: images < 8 MB, JPEG/PNG only
"Carousel requires 2-20 items"	Wrong number of images	Ensure 2-20 images for carousel
250 posts/day exceeded	Rate limit reached	Wait 24 hours