UML-MCP

UML-MCP Server is a UML diagram generation tool based on MCP (Model Context Protocol), which can help users generate various types of UML diagrams through natural language description or directly writing PlantUML and Mermaid and Kroki

→ antoinebou12/uml-mcp · listed on mcp_so

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

✅

Open source with a license and README

Anyone can audit the code, the license is declared, and the publisher documents what it does.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

configMCP_MAX_CODE_LENGTH— Max diagram code length 500000

configTESTING

configKROKI_SERVER— Kroki server URL https://kroki.io

configMOCK_FASTMCP

configAGENT_DISCOVERY_BASE_URL

configUML_MCP_STDIO_UI

configLIST_TOOLS

configUSE_LOCAL_KROKI— Use local Kroki instance false

configMCP_DIAGRAM_FALLBACK

configMCP_MEMORY_ONLY

configMCP_URL_ONLY

configVERCEL

configMCP_OUTPUT_DIR— Diagram output directory ./output

configUML_MCP_OUTPUT_DIR

configMCP_MAX_RENDER_SECONDS

configMCP_BATCH_MAX_ITEMS— generate_uml_batch Multiple diagrams in one call (cap: )

configMCP_RATE_LIMIT_PER_MINUTE— HTTP rate limit per IP for diagram/MCP routes (0 = off) 0

configUSE_LOCAL_PLANTUML— Use local PlantUML instance false

configUSE_REAL_FASTMCP

configDEVELOPMENT

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 1 concrete improvement we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/antoinebou12-uml-mcp-11b0gp)](https://m8ven.ai/mcp/antoinebou12-uml-mcp-11b0gp)

commit: f05b252a5103dccbbfa56ec86e4045dc1f70ed1f

code hash: f06de54cab97949a794551c8a10eeed38df6e202def75b76eba01b5223452ce7

verified: 6/28/2026, 9:14:48 AM

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