This server has severe definition quality issues. Tool 1 (execute_skill_action) has a description but no visible input schema in the source code. Tool 2 (synthesize_character_motion_clip) has a basic description and partial schema visible in the evaluation metadata, but the actual tool registration is not visible in mcp_server.py, only a hardcoded JSON response in client.py. The mcp_server.py file does not register tools via the MCP protocol; it merely prints a static JSON string. No tool definitions follow MCP tool registration patterns. Descriptions are minimal (under 100 chars). Parameter descriptions exist for tool 2 but lack type constraints, ranges, or validation guidance. No output schemas are documented. Error handling is absent. The server appears to be a mock/stub implementation rather than a functional MCP server.

• Implement proper MCP tool registration in mcp_server.py using the MCP protocol's tools/list and tools/call handlers. Replace the static JSON print with a real MCP server that responds to protocol messages.
• Add complete input schemas for both tools. For execute_skill_action, define all required and optional parameters with types, descriptions, and constraints. For synthesize_character_motion_clip, add min/max bounds for animation_frames_count (e.g., 1 - 10000) and an enum or pattern for motion_prompt validation.
• Document output schemas formally. Define the structure returned by each tool (field names, types, descriptions). For synthesize_character_motion_clip, document that it returns motion_clip_id, rig_type, center_of_mass_balance_score_pct, etc.
• Expand tool descriptions to 50 - 200 characters, explaining WHAT the tool does, WHEN to use it, and what it returns. Current descriptions are too terse (e.g., 'Execute a skill action...' lacks context on when an agent should call it).
• Add error handling patterns. Define what happens if motion_prompt is invalid, animation_frames_count exceeds limits, or the physics simulation fails. Return actionable error messages (e.g., 'animation_frames_count must be 1 - 10000; got 50000') instead of silent failures.