Claude Desktop (MCP)

Schedule social media posts directly from Claude Desktop using natural language. No coding required.

What You Can Do

Ask Claude things like:

• "Post 'Hello world!' to Twitter"
• "Schedule a LinkedIn post for tomorrow at 9am"
• "Show my connected accounts"
• "Cross-post this to Twitter and LinkedIn"
• "Post this image to Instagram" (with browser upload flow)

Setup

curl -LsSf https://astral.sh/uv/install.sh | sh

powershell -c "irm https://astral.sh/uv/install.ps1 | iex"

~/Library/Application Support/Claude/claude_desktop_config.json

%APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "late": {
      "command": "uvx",
      "args": ["--from", "late-sdk[mcp]", "late-mcp"],
      "env": {
        "LATE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Alternative: Using pip

If you prefer pip over uvx:

pip install late-sdk[mcp]

{
  "mcpServers": {
    "late": {
      "command": "python",
      "args": ["-m", "late.mcp"],
      "env": {
        "LATE_API_KEY": "your_api_key_here"
      }
    }
  }
}

Available Commands

Tool Reference

Detailed parameters for each MCP tool.

Accounts

accounts_list

List all connected social media accounts. Returns the platform, username, and account ID for each connected account. Use this to find account IDs needed for creating posts.

accounts_get

Get account details for a specific platform. Returns username and ID for the first account matching the platform.

Profiles

profiles_list

List all profiles. Profiles group multiple social accounts together for easier management.

profiles_get

Get details of a specific profile including name, description, and color.

profiles_create

Create a new profile for grouping social accounts.

profiles_update

Update an existing profile. Only provided fields will be changed.

profiles_delete

Delete a profile. The profile must have no connected accounts.

Posts

posts_create

Create a social media post. Can be saved as DRAFT, SCHEDULED, or PUBLISHED immediately.

posts_publish_now

Publish a post immediately to a platform. The post goes live right away. This is a convenience wrapper around posts_create with publish_now=true.

posts_cross_post

Post the same content to multiple platforms at once.

posts_list

List posts with optional filtering by status.

posts_get

Get full details of a specific post including content, status, and scheduling info.

posts_update

Update an existing post. Only draft, scheduled, and failed posts can be updated. Published posts cannot be modified.

posts_delete

Delete a post by ID. Published posts cannot be deleted.

posts_retry

Retry publishing a failed post. Only works on posts with 'failed' status.

posts_list_failed

List all failed posts that can be retried.

posts_retry_all_failed

Retry all failed posts at once.

Media

media_generate_upload_link

Generate a unique upload URL for the user to upload files via browser.

Use this when the user wants to include images or videos in their post. The flow is:

1. Call this tool to get an upload URL
2. Ask the user to open the URL in their browser
3. User uploads files through the web interface
4. Call media_check_upload_status to get the uploaded file URLs
5. Use those URLs when creating the post with posts_create

media_check_upload_status

Check the status of an upload token and get uploaded file URLs.

Use this after the user has uploaded files through the browser upload page. Returns: pending (waiting for upload), completed (files ready), or expired (token expired).

Uploading Images & Videos

Since Claude Desktop can't access files on your computer directly, we use a browser upload flow:

Supported file types:

• Images: JPG, PNG, WebP, GIF
• Videos: MP4, MOV, WebM
• Documents: PDF

Maximum file size: 5GB

Example Conversations

Simple Post

You: Post "Just launched our new feature! 🚀" to Twitter

Claude: ✅ Published to Twitter (@yourhandle) Post ID: post_abc123

Scheduled Post

You: Schedule a LinkedIn post for tomorrow at 9am: "Excited to announce our Series A funding!"

Claude: ✅ Scheduled for LinkedIn (@yourcompany) Post ID: post_xyz789 Scheduled: 2024-12-12 09:00

Cross-Posting

You: Post "Big news coming soon..." to Twitter and LinkedIn

Claude: ✅ Published to: twitter, linkedin Post ID: post_multi456

Draft Post

You: Create a draft post for Twitter with the text "Working on something exciting..."

Claude: 📝 Draft saved for twitter (@yourhandle) Post ID: post_draft789 Status: draft

With Image

You: I want to post a product photo to Instagram

Claude: 📤 Upload link generated! Open this link in your browser to upload: http://...

You: done

Claude: ✅ Upload completed! 1 file uploaded. Now I'll create the post... ✅ Published to Instagram with 1 media file

Troubleshooting

"Command not found: uvx"

Make sure uv is installed and in your PATH:

# Check if installed
uvx --version

# If not, install it
curl -LsSf https://astral.sh/uv/install.sh | sh

You may need to restart your terminal or add uv to your PATH.

"Invalid API key"

1. Check your API key at getlate.dev/dashboard/api-keys
2. Make sure you copied it correctly (no extra spaces)
3. Verify the key is active

"No accounts connected"

You need to connect social media accounts at getlate.dev before you can post.

Changes not taking effect

After editing claude_desktop_config.json, you must restart Claude Desktop completely.

Links

• Late Dashboard
• Get API Key
• Python SDK Documentation
• MCP Protocol