cassandra-plugins
Claude Code plugin marketplace for the Cassandra platform.
Setup
Add the marketplace:
claude plugin marketplace add Cassandras-Edge/cassandra-marketplace
Install a plugin
claude plugin install <plugin-name>
Available plugins:
| Plugin | Type | Description |
|---|
stopgate | Hook | Blocks lazy stops — uses an LLM call to verify task completion |
acl-lint | Hook | Validates acl.yaml structure on write/edit |
gateway-mcp | MCP | Cassandra Gateway — execute any platform tool via sandboxed Python |
market-research | MCP | Financial market data — stocks, SEC filings, macro, options, earnings |
twitter-mcp | MCP | Twitter/X — news search, Grok AI, post analytics, personal timeline |
reddit-mcp | MCP | Reddit — search, subreddit browsing, post + comment reading |
claudeai-mcp | MCP | claude.ai — conversations, projects, knowledge docs, artifacts |
discord-mcp | MCP | Discord — search messages, read channels/threads/DMs, attachments |
media-mcp | MCP | YouTube/media — transcription, search, comments, Watch Later |
Examples
# Install the stop gate hook
claude plugin install stopgate
# Install the gateway MCP server
claude plugin install gateway-mcp
# Install to current project only
claude plugin install media-mcp --scope project
Managing plugins
# List installed plugins
claude plugin list
# Disable a plugin without uninstalling
claude plugin disable stopgate
# Re-enable
claude plugin enable stopgate
# Uninstall
claude plugin uninstall stopgate
# Update all plugins after marketplace changes
claude plugin marketplace update
claude plugin update <plugin-name>
Auth
MCP plugins authenticate via WorkOS OAuth. On first tool call, you'll be prompted to authorize in the browser. No API keys or manual config needed.
Cassandras-Edge
