BREAKING FIX: Claude Code's marketplace schema validator rejects unrecognized keys. The 'domain' field added in v8.0.0 caused 'Failed to load marketplace' errors on all 20 plugin entries. - Removed 'domain' from marketplace.json (all 3 profiles) - Removed 'domain' from all 20 plugin.json files - Added 'domain' to metadata.json for all 20 plugins - Updated validate-marketplace.sh to read from metadata.json - Updated docs (CANONICAL-PATHS.md, CLAUDE.md) to reference metadata.json - 12 new metadata.json files created (plugins without mcp_servers) - 8 existing metadata.json files updated with domain field Version: 9.1.2 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
debug-mcp
MCP server debugging, inspection, and development toolkit.
Overview
This plugin provides tools for diagnosing MCP server issues, testing tool invocations, analyzing server logs, inspecting configurations and dependencies, and scaffolding new MCP servers. It is essential for maintaining and developing MCP integrations in the Leo Claude Marketplace.
Commands
| Command | Description |
|---|---|
/debug-mcp status |
Show all MCP servers with health status |
/debug-mcp test |
Test a specific MCP tool call |
/debug-mcp logs |
View recent MCP server logs and errors |
/debug-mcp inspect |
Inspect MCP server config and dependencies |
/debug-mcp scaffold |
Generate MCP server skeleton project |
Agent
| Agent | Model | Mode | Purpose |
|---|---|---|---|
| mcp-debugger | sonnet | default | All debug-mcp operations: inspection, testing, log analysis, scaffolding |
Skills
| Skill | Description |
|---|---|
| mcp-protocol | MCP stdio protocol specification, JSON-RPC messages, tool/resource/prompt definitions |
| server-patterns | Python MCP server directory structure, FastMCP pattern, config loader, entry points |
| venv-diagnostics | Virtual environment health checks: existence, Python binary, packages, imports |
| log-analysis | Common MCP error patterns with root causes and fixes |
| visual-header | Standard command output header |
Architecture
plugins/debug-mcp/
├── .claude-plugin/
│ └── plugin.json
├── commands/
│ ├── debug-mcp.md # Dispatch file
│ ├── debug-mcp-status.md
│ ├── debug-mcp-test.md
│ ├── debug-mcp-logs.md
│ ├── debug-mcp-inspect.md
│ └── debug-mcp-scaffold.md
├── agents/
│ └── mcp-debugger.md
├── skills/
│ ├── mcp-protocol.md
│ ├── server-patterns.md
│ ├── venv-diagnostics.md
│ ├── log-analysis.md
│ └── visual-header.md
├── claude-md-integration.md
└── README.md
License
MIT License - Part of the Leo Claude Marketplace.