8644df9ad5
The state file lives at .claude/ralph-loop.local.md — project-scoped, not session-scoped. The plugin's Stop hook fires in every Claude Code session open in that project directory. So if session A starts a loop, session B's Stop events also find the state file and block, feeding A's prompt into B and consuming A's iteration budget. This was masked by the transcript-parsing bug fixed in the previous commit: that bug deleted the state file on the first Stop in any session, so neither session looped. Fixing it exposed the leak. Fix: setup writes CLAUDE_CODE_SESSION_ID into the frontmatter; the hook compares against .session_id from its stdin JSON and exits silently on mismatch. State files without session_id (written by old setup scripts) fall through to preserve existing behavior.
Claude Code Plugins Directory
A curated directory of high-quality plugins for Claude Code.
⚠️ Important: Make sure you trust a plugin before installing, updating, or using it. Anthropic does not control what MCP servers, files, or other software are included in plugins and cannot verify that they will work as intended or that they won't change. See each plugin's homepage for more information.
Structure
/plugins- Internal plugins developed and maintained by Anthropic/external_plugins- Third-party plugins from partners and the community
Installation
Plugins can be installed directly from this marketplace via Claude Code's plugin system.
To install, run /plugin install {plugin-name}@claude-plugin-directory
or browse for the plugin in /plugin > Discover
Contributing
Internal Plugins
Internal plugins are developed by Anthropic team members. See /plugins/example-plugin for a reference implementation.
External Plugins
Third-party partners can submit plugins for inclusion in the marketplace. External plugins must meet quality and security standards for approval. To submit a new plugin, use the plugin directory submission form.
Plugin Structure
Each plugin follows a standard structure:
plugin-name/
├── .claude-plugin/
│ └── plugin.json # Plugin metadata (required)
├── .mcp.json # MCP server configuration (optional)
├── commands/ # Slash commands (optional)
├── agents/ # Agent definitions (optional)
├── skills/ # Skill definitions (optional)
└── README.md # Documentation
License
Please see each linked plugin for the relevant LICENSE file.
Documentation
For more information on developing Claude Code plugins, see the official documentation.