Fast Mermaid Validator MCP

MERMAID SEQUENCE DIAGRAM SYNTAX RULES: DECLARATION: - Start with: sequenceDiagram PARTICIPANTS: - Define: participant A as Actor - Use meaningful aliases for clarity ARROWS: - ->> = Synchronous message - -->> = Return/Response message - -x = Lost message - -) = Async message - ->>+ = Activate lifeline - ->>- = Deactivate lifeline NOTES: - Note over A: Comment text - Note left of A: Left-side note - Note right of A: Right-side note BLOCKS: - alt/else/end = Alternative flows - loop/end = Iteration blocks - par/and/end = Parallel execution - opt/end = Optional execution COMMON ISSUES: - Missing participant definitions - Invalid arrow syntax (single dash instead of double) - Unclosed alt/loop/par blocks - Invalid participant names with spaces FIX REQUIREMENTS: 1. Define all participants before first message 2. Use proper arrow syntax (->> not ->) 3. Close all blocks with appropriate end keyword 4. Use valid participant identifiers