How to update the Sandcastles MCP plugin in Claude

MCPUpdated October 8, 2026

Getting the latest Sandcastles plugin in Claude

You no longer download the Claude plugin from Sandcastles or upload a zip file. To get the latest version, add Sandcastles from the Claude directory at https://claude.ai/directory/sandcastles.

Add Sandcastles from the Claude directory

  1. In Sandcastles, go to Settings > Connectors.
  2. In the MCP section, under Install from Marketplace, click Claude. This opens the Sandcastles page in the Claude directory. You can also go straight to https://claude.ai/directory/sandcastles.
  3. Add Sandcastles in Claude.
  4. When Claude sends you to the Sandcastles sign-in page, log in with your Sandcastles account and approve access.

If you uploaded the plugin zip before

If you added Sandcastles to Claude by uploading a zip file such as sandcastles-claude-plugin-v1.0.6.zip, remove that copy first so you don't end up with two Sandcastles plugins.

  1. In Claude, find the Sandcastles plugin you uploaded in your personal plugins.
  2. Remove it.
  3. Add Sandcastles from the Claude directory, following the steps above.

Update the plugin in Claude Code

If you added the Sandcastles marketplace in Claude Code with /plugin marketplace add sandcastles-ai/plugins, run these two commands to get the latest version:

/plugin marketplace update sandcastles
/plugin install sandcastles@sandcastles

What's in the latest version

The plugin adds these slash commands:

  • /analytics: see your personal analytics dashboard.
  • /analyze: analyze a single video.
  • /channels-add: add channels to your watchlist.
  • /channels-recap: get a brief on what a specific channel has been doing.
  • /channels-search: find channels that focus on a specific topic or niche.
  • /channels-suggest: get channel recommendations based on your watchlist.
  • /formats-global: see top video formats across all of Sandcastles.
  • /formats-watchlist: see top video formats from creators in your watchlist.
  • /hooks-global: see top hook patterns across all of Sandcastles.
  • /hooks-watchlist: see top hook patterns from creators in your watchlist.
  • /rules: see your automation rules.
  • /topics: see what topics are trending in your niche.
  • /video-suggest: get a ranked recommendation for what to make next.
  • /videos-global: see top performing videos across all of Sandcastles.
  • /videos-watchlist: see top performing videos from your watchlist.

The /insight command from older versions is no longer included. If one of the commands above doesn't appear when you type / in Claude, make sure you've removed any uploaded copy and added Sandcastles from the Claude directory.

Troubleshooting

  • You don't see the Connectors tab: this tab only appears once you have an active plan.
  • The MCP section shows a See plans button: you're on the Starter plan, which doesn't include the MCP. Upgrade to use Sandcastles in Claude.
  • You're looking for the Download Claude plugin button: it has been removed. Add Sandcastles from the Claude directory instead.

If you have any questions, please reach out to support@sandcastles.ai.

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