This server has critical structural and definition deficiencies. Tool definitions are inferred rather than explicitly registered via MCP protocol. The mcp_server.py file does not implement the MCP specification, it merely prints a JSON status message and exits. No actual tool registration, schema validation, or request/response handling is present. The negotiate_calendar tool in client.py has a partial input schema but no output schema documentation. Descriptions are present but minimal (under 100 chars). No error handling, no parameter validation, no security controls. This is a stub implementation, not a functional MCP server.

• Implement a proper MCP server using the official Python SDK (mcp package). Replace the stub mcp_server.py with a stateless request/response handler that registers tools via the MCP protocol.
• Add complete input and output schemas for both tools. Use JSON Schema with explicit type definitions, descriptions for every parameter, and documented return structures. Example: execute_skill_action should declare what 'skill_action' parameter accepts (enum of valid actions) and what fields the response contains.
• Expand tool descriptions to 100 - 200 characters. Include: (1) what the tool does, (2) when to use it vs. similar tools, (3) what it modifies (WRITE risk noted, confirm this is intentional), (4) prerequisites or dependencies.
• Add parameter descriptions for founder_priority_rules. Explain the expected structure (e.g., 'dict with keys like max_meetings_per_day, focus_time_blocks, preferred_hours; all optional').
• Implement error handling with recovery guidance. Return structured errors that classify failures as retryable, user-fixable, or fatal. Example: 'Invalid email format in incoming_invite_email. Expected RFC 5322 email text. Retry with a valid invite.'