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How to install all 245 Skills into Claude Code at once with Sandbase Skills

Add the marketplace and install the full Skill bundle as a Claude Code plugin.

Short answer: Open Claude Code in your terminal; then run /plugin marketplace add sandbaseai/sandbase-skills inside Claude Code; run /plugin install sandbase-skills@sandbase-agent-skills inside Claude Code. All steps.

  • Research
  • Beginner
  • 15 minutes
  • From the README
  • Claude Code

Authorization notice. Sandbase Skills is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA Claude Code user who wants the whole Skill library available without copying folders by hand.

The problemCopying 245 Skill directories manually is slow and easy to get wrong.

The outcomeAll listed Skills available to Claude Code, discovered on demand.

What you need first

  • An AI agent that supports Agent Skills, such as Codex, Claude Code, Cursor, Gemini CLI, or DeepSeek Harness
  • Node.js with npx for the skills CLI installs
  • GitHub CLI 2.90.0 or later for the gh skill workflow
  • Python 3 and a local clone of the repository to run the offline validator
  • A SANDBASE_API_KEY set in your environment only for specialized social, market, and data-provider Skills

Steps

  1. Open Claude Code in your terminal.
  2. Run /plugin marketplace add sandbaseai/sandbase-skills inside Claude Code.
  3. Run /plugin install sandbase-skills@sandbase-agent-skills inside Claude Code.
  4. Ask Claude Code to list the research Skills it can use, then pick one from the catalog to test.

Prompt for your agent

Install the sandbase-skills plugin marketplace in Claude Code and confirm it lists the research Skills from sandbaseai/sandbase-skills. Return the names of three Skills you can use for research and say which one fits a fact-checking task.

Caveat. The marketplace lists every Skill explicitly, but the specialized social and data Skills need a SANDBASE_API_KEY before they will run against providers.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for sandbaseai/sandbase-skills and "Install all 245 Skills into Claude Code at once"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

Cursor, ChatGPT, others

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