# LangGraph4j PlantUML

> Use this tool when you need to convert diagram images into PlantUML code, solving problems of manual code writing and syntax errors. It takes diagram images as input and outputs PlantUML code, utilizing vision model integration and JSON schema validation to ensure accuracy. Ideal for automating diagram code generation, this tool streamlines workflow and reduces manual effort in software development and design documentation.

Canonical page: https://skillsregistry.net/skills/langgraph4j-plantuml  
JSON: https://api.skillsregistry.net/v1/skills/langgraph4j-plantuml

## Description

Converts diagram images into PlantUML code through an orchestrated workflow using LangGraph4j. Features vision model integration for image analysis, structured JSON schema validation for diagram descriptions, and automatic PlantUML syntax generation with error correction and review cycles. Built with Spring AI support for multiple LLM providers including OpenAI and Ollama, and includes an in-memory transport implementation for testing.

## Trust

- **Trust score (0–1):** 0.97
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** media
- **Updated:** 2026-09-28

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/langgraph4j-plantuml)
- **Repository:** <https://github.com/langgraph4j/langraph4j-plantuml-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "langgraph4j-plantuml"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/langgraph4j-plantuml` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/langgraph4j-plantuml/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt