Diagrams MCP Server

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/mohammad-emad-dev-diagrams-mcp-server

About

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 26, 2026.

Tools

11 read · 2 write · 2 delete

Secrets

None asked for

Install scripts

None found

Runs as

Node.js package

Tools (15)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• diagrams_check_consistencyCheck Diagram-to-Code Consistencyread-only

  Compare class/interface/component names mentioned in a PlantUML or Mermaid diagram against identifiers that actually exist in the codebase, to catch documentation drift. This is a heuristic, text-based check (not a full semantic/AST analysis): it extracts entity names from class/interface/enum/component declarations in the diagram, then searches source files under the project root for a matching identifier as a whole word. It flags names that appear in the diagram but were not found anywhere in the scanned code — a signal the diagram may be outdated, or the code was renamed/removed/not yet bu…

• diagrams_createCreate New Diagram

  Create a new PlantUML or Mermaid diagram file under the diagrams root. The diagram type is inferred from the file extension in relative_path: - .puml or .plantuml -> PlantUML - .mmd or .mermaid -> Mermaid This tool refuses to overwrite an existing file — use diagrams_update for that. Intermediate directories in relative_path are created automatically. Performs a basic, dependency-free syntax check before writing (not full validation): PlantUML must include @startuml/@enduml boundaries; Mermaid must start with a known diagram declaration. Clearly invalid or empty sources are rejected wit…

• diagrams_deleteDelete Diagramcan change or delete data

  Delete a single PlantUML or Mermaid diagram file from the diagrams root. This is destructive and cannot be undone — the file is removed from disk. To replace content instead, use diagrams_update. To remove then recreate with different content, delete first, then use diagrams_create. Args: - relative_path (string): Path to the diagram relative to the diagrams root, as returned by diagrams_list Returns: JSON with schema: { "relative_path": string, "deleted": true } Examples: - Use when: "Remove the outdated order-flow diagram" -> relative_path="system/order-flow.puml" - D…

• diagrams_diffDiff Two Diagramsread-only

  Description is built at runtime.

• diagrams_exportExport Diagram as a Self-Contained HTML Fileread-only

  Description is built at runtime.

• diagrams_generateGenerate a Class Diagram from Coderead-only

  Description is built at runtime.

• diagrams_generate_sequenceGenerate a Sequence Diagram from Coderead-only

  Description is built at runtime.

• diagrams_getGet Diagram Sourceread-only

  Retrieve the raw source text of a single PlantUML or Mermaid diagram, in full or as an explicit character window. Args: - relative_path (string): Path to the diagram relative to the diagrams root, as returned by diagrams_list - offset (number, optional): Zero-based character offset where the returned window starts (default: 0) - max_chars (number, optional): Maximum characters to return from offset (1-100000). Omit to return the full source Returns: JSON with schema: { "relative_path": string, "type": "plantuml" | "mermaid", "content": string, // full source, or t…

• diagrams_listList Architecture Diagramsread-only

  List all PlantUML and Mermaid diagram files stored under the project's diagrams directory. This tool scans the configured diagrams root recursively and returns every file with a recognized diagram extension (.puml, .plantuml, .mmd, .mermaid). It does NOT create, modify, or render diagrams — read-only. Args: - type_filter ('plantuml' | 'mermaid' | 'all'): Restrict results to one diagram type (default: 'all') - offset (number, optional): Zero-based number of matching diagrams to skip (default: 0) - limit (number, optional): Maximum diagrams to return (1-500). Omit to return every remaini…

• diagrams_list_templatesList Available Diagram Templatesread-only

  Description is built at runtime.

• diagrams_renderRender Diagram to Imageread-only

  Description is built at runtime.

• diagrams_save_exportSave Diagram Export as HTML File

  Description is built at runtime.

• diagrams_scaffoldScaffold TypeScript or JavaScript Classes from a Diagramread-only

  Description is built at runtime.

• diagrams_templateInstantiate a Diagram Skeletonread-only

  Description is built at runtime.

• diagrams_updateUpdate Existing Diagramcan change or delete data

  Replace the full content of an existing PlantUML or Mermaid diagram file. This performs a full-content replace, not a partial edit — pass the complete new diagram source. To create a new diagram, use diagrams_create (or set create_if_missing=true here). Performs a basic, dependency-free syntax check before writing (not full validation): PlantUML must include @startuml/@enduml boundaries; Mermaid must start with a known diagram declaration. Clearly invalid or empty sources are rejected without overwriting the existing file. Args: - relative_path (string): Path to the diagram, relative to t…

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Stars

1

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3

Last commit

Oct 19, 2026 (9 days ago)

Last release

Oct 19, 2026 (9 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.mohammad-emad-dev/diagrams-mcp-server

Version

0.11.0

Auth

No auth

Packages

npm diagrams-mcp-server

License

MIT

Repository

github.com/mohammad-emad-dev/diagrams-mcp-server

Website

github.com/mohammad-emad-dev/diagrams-mcp-server

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql