Plantuml Validation MCP Server

What is Plantuml Validation MCP Server?

It is an MCP server for validating Plantuml code. It provides a single tool, ValidatePlantuml, that checks the correctness of Plantuml syntax and returns either "Ok" or detailed error information including description, line number, and other metadata. The server is certified by MCPHub and intended for developers using Plantuml in MCP-compatible environments like VSCode.

How to use Plantuml Validation MCP Server?

The server can be run via Docker Compose for SSE transport or via Docker for stdio transport. In VSCode, configure the MCP server in settings.json by specifying the transport type and URL (SSE) or the Docker run command with arguments (stdio). For stdio usage, you must provide a PlantumlBaseUrl argument pointing to your Plantuml server instance.

Key features of Plantuml Validation MCP Server

• Validates Plantuml code and returns clear pass/fail results.
• Provides detailed error messages with line numbers and descriptions.
• Supports both SSE and stdio MCP transports.
• Easily deployable via Docker Compose or plain Docker.
• Configured directly in VSCode’s MCP settings.
• Certified by MCPHub for quality assurance.

Use cases of Plantuml Validation MCP Server

• Validate Plantuml diagrams automatically during development.
• Integrate Plantuml validation into MCP-enabled code editors like VSCode.
• Catch syntax errors in Plantuml code before generating diagrams.
• Provide feedback on Plantuml correctness in CI/CD pipelines via MCP.

FAQ from Plantuml Validation MCP Server

What tool does it provide?

It provides the ValidatePlantuml tool, which takes a Plantuml message and returns "Ok" if valid, or detailed error information if invalid.

How can I run the server?

You can run it using Docker Compose (for SSE transport) or using Docker with a publish command (for stdio transport). Configuration is added to VSCode’s settings.json under the mcp.servers section.

What transports are supported?

The server supports SSE (Server-Sent Events) and stdio transports for MCP communication.

Do I need a separate Plantuml server to use this?

For stdio usage, yes – you must provide a PlantumlBaseUrl argument in the Docker run command pointing to your running Plantuml server instance.

Is the server certified?

Yes, this server is certified by MCPHub, as indicated in the README.