Files
ECC/plugins
haelyra 8a90049987 feat(plugins): add root Agent Plugins manifest for directory submission
The OpenAI plugin directory reads the portable Agent Plugins 1.0.0 manifest
at the plugin root, with listing metadata nested under extensions["com.openai"].
ECC only shipped the .codex-plugin/plugin.json overlay, which the spec treats as
a compatibility fallback for legacy packages, and whose top-level interface key
is not valid in the portable format.

Add plugin.json at the repository root carrying the same identity, skills, and
MCP paths, with the OpenAI interface block under extensions["com.openai"]. Keep
the .codex-plugin overlay, since the release surface, npm files list, and harness
compliance checks still resolve it; the manifests are now pinned in sync by test.

Point the directory policy URLs at ECC-owned pages instead of GitHub's own
privacy statement and terms, which listing review rejects as not belonging to
the publisher. These pages ship separately on ecc.tools and must be live before
the listing is submitted.

Refs ECC-063
2026-09-22 19:09:13 -04:00
..

Plugins and Marketplaces

Plugins extend Claude Code with new tools and capabilities. This guide covers installation only - see the full article for when and why to use them.


Marketplaces

Marketplaces are repositories of installable plugins.

Adding a Marketplace

# Add official Anthropic marketplace
claude plugin marketplace add https://github.com/anthropics/claude-plugins-official

# Add community marketplaces (mgrep by @mixedbread-ai)
claude plugin marketplace add https://github.com/mixedbread-ai/mgrep
Marketplace Source
claude-plugins-official anthropics/claude-plugins-official
claude-code-plugins anthropics/claude-code
Mixedbread-Grep (@mixedbread-ai) mixedbread-ai/mgrep

Installing Plugins

# Open plugins browser
/plugins

# Or install directly
claude plugin install typescript-lsp@claude-plugins-official

Development:

  • typescript-lsp - TypeScript intelligence
  • pyright-lsp - Python type checking
  • hookify - Create hooks conversationally
  • code-simplifier - Refactor code

Code Quality:

  • code-review - Code review
  • pr-review-toolkit - PR automation
  • security-guidance - Security checks

Search:

  • mgrep - Enhanced search (better than ripgrep)
  • context7 - Live documentation lookup

Workflow:

  • commit-commands - Git workflow
  • frontend-patterns - UI patterns
  • feature-dev - Feature development

Quick Setup

# Add marketplaces
claude plugin marketplace add https://github.com/anthropics/claude-plugins-official
claude plugin marketplace add https://github.com/mixedbread-ai/mgrep

# Open /plugins and install what you need

Plugin Files Location

~/.claude/plugins/
|-- cache/                    # Downloaded plugins
|-- installed_plugins.json    # Installed list
|-- known_marketplaces.json   # Added marketplaces
|-- marketplaces/             # Marketplace data