appkit-mcp-bpmn 1.11.3

MCP BPMN 2.0 Diagram Server

appkit-mcp-bpmn

MCP server component for generating and viewing BPMN 2.0 diagrams.

Features

• Generate BPMN diagrams from natural language descriptions via LLM
• Save & validate BPMN 2.0 XML with schema-aware validation
• Render diagrams in-browser using bpmn-js Viewer (read-only)
• Download diagrams as .bpmn files
• Public API — no authentication required

MCP Tools

generate_bpmn_diagram

Generate a BPMN 2.0 diagram from a natural language description.

Parameters:

• description (str, required): Workflow description in natural language
• diagram_type (str, optional): "process" | "collaboration" | "choreography" (default: "process")

Returns: JSON with {success, id, xml, download_url, view_url, error}

save_bpmn_diagram

Save pre-built BPMN 2.0 XML to the filesystem.

Parameters:

• xml (str, required): Complete BPMN 2.0 XML string

Returns: JSON with {success, id, xml, download_url, view_url, error}

MCP Resource

ui://appkit/bpmn_viewer.html

Interactive BPMN diagram viewer powered by bpmn-js. Renders tool results via the MCP App ui/notifications/tool-result protocol.

Features:

• Zoom to fit viewport
• Download diagram as .bpmn file
• Error display for invalid XML

Quick Start

from appkit_mcp_bpmn.server import create_bpmn_mcp_server

mcp = create_bpmn_mcp_server()
app = mcp.http_app(path="/mcp", transport="streamable-http")

Example Workflow

1. User: "Create an expense approval workflow"
2. LLM calls generate_bpmn_diagram(description="...", diagram_type="process")
3. Server generates XML via LLM, validates, saves to uploaded_files/
4. Returns {id, view_url, download_url}
5. MCP App renders diagram in bpmn-js Viewer

Dependencies

• appkit-commons — Configuration and logging
• appkit-mcp-commons — Shared MCP base models
• lxml — XML parsing and validation
• openai (optional) — LLM generation via OpenAI API