[BUG] Cannot add official plugins marketplace - reserved name conflict

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The official Anthropic plugins repository
(anthropics/claude-plugins-public) cannot be added as a
marketplace because its marketplace.json uses the name
claude-plugins-official, which is a reserved name that Claude Code
blocks.

Additional context

The marketplace.json at https://github.com/anthropics/claude-plugi
ns-public/blob/main/.claude-plugin/marketplace.json has "name":
"claude-plugins-official" which triggers the reserved name
validation.

The /plugin Discover tab is empty because no official marketplace
is configured out of the box.

What Should Happen?

I should be able to add the marketplace, or already see the plugins in it. Expected behavior

Either:

• The official Anthropic marketplace should be pre-configured and

available by default, OR

• The anthropics/claude-plugins-public repository should use a

non-reserved name so users can add it manually, OR

• Repositories under the anthropics/ GitHub organization should be

allowlisted to use reserved names

Environment

• Claude Code version: 2.1.7
• OS: MacOS 26.2

Error Messages/Logs

Warning: Failed to load marketplace 'claude-plugins-official': Invalid schema: name: Marketplace name      │
│ cannot impersonate official Anthropic/Claude marketplaces. Names containing "official", "anthropic", or    │
│ "claude" in official-sounding combinations are reserved.

Steps to Reproduce

To Reproduce

1. Run /plugin marketplace list - shows no official marketplace

configured by default

1. Run /plugin marketplace add anthropics/claude-plugins-public
2. Error appears:

Error: Invalid schema: name: Marketplace name cannot impersonate
official Anthropic/Claude marketplaces. Names containing
"official",
"anthropic", or "claude" in official-sounding combinations are
reserved.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.7

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_