mctxchangelog

Authentication Overhaul and Claude Plugin Marketplace

March 29, 2026 • 2026-03-29.000

This release transforms how authentication works on mctx with secure 30-day sessions and automatic re-validation, while adding Claude Plugin Marketplace support for wider App distribution.

Features

  • Secure sessions: 30-day session tokens with automatic re-validation — no more unexpected logouts during active development
  • Claude Plugin Marketplace: Publish your Apps directly to Claude's plugin marketplace for broader discovery
  • API tokens: Generate and manage personal access tokens for CI/CD workflows with built-in rotation support
  • Auto-subscriptions: New users automatically subscribe to help.mctx.ai and any free Apps when signing up
  • Real-time publishing: Distribution channels show live status and poll automatically until publishing completes
  • Universal MCP support: Platform-injected about tool works across all MCP clients including ChatGPT and Cursor
  • Vanity URLs: Access your subscribed Apps directly at their dedicated subdomain URLs
  • Installation guidance: Modal with copy-paste instructions appears on subscription pages
  • Enhanced token management: Copy buttons, version-aware URLs, and clear rotation guidance in token modals
  • Compact App lists: New card layout makes browsing your Apps and subscriptions faster
  • Deferred events: Schedule tasks that run after a delay, with automatic cancellation when superseded

Fixes

  • Session stability: Active sessions are preserved across platform updates — no unexpected logouts
  • Registry reliability: Improved synchronization keeps MCP Community Registry listings accurate
  • Distribution errors: Channel health now surfaces actionable error details instead of generic failure states
  • Performance monitoring: Alert thresholds refined to reduce noise while catching real issues
  • Auth hardening: Improved security checks on API token requests
  • Mobile modals: Readme viewer uses full viewport height on mobile devices
  • Accessibility: WCAG contrast compliance, focus states, and proper tooltip positioning throughout the dashboard
  • Claude Desktop: Install instructions now reference the correct connectors panel in Claude Desktop
  • Plugin descriptions: Marketplace entries now always reflect your App's current description

Performance

  • Cold start elimination: Apps respond faster on first request after deployment
  • Faster response times: Optimized traffic routing and caching reduce App response times
  • Query efficiency: Database optimizations make background processes more efficient and reduce load
  • Smart caching: Subscription status refreshes automatically when changes occur

With Claude Plugin Marketplace support live, your Apps can now reach users directly in Claude's ecosystem alongside the existing MCP Community Registry.