Research: how to publish to Claude Code's official skill/plugin/MCP marketplaces

[krisrowe]

Find out:

• Does Claude Code have an official marketplace for skills, plugins, or MCP servers?
• If so, how do you submit/publish to it? What's the process, requirements, review criteria?
• What's the relationship between the Anthropic connector marketplace (claude.ai connectors) and Claude Code plugins?
• Is there a distinction between the plugin system (installed via claude plugin install) and the skills system (.claude/skills/)? Do they have separate discovery mechanisms?
• What does Anthropic officially endorse vs. what's community-driven?
• How does this compare to what Vercel offers via skills.sh?

This is about understanding all the channels through which echoskill/echomodel content could reach users — not just our own marketplace.