Vaults Diagram Tools MCP Server

vaults-diagram-tools

Mermaid to assets. Source code to maps. MCP for agents.

vaults-diagram-tools is a standalone toolkit for teams that need reproducible Mermaid SVG/JPEG assets, source-code diagrams, and agent-friendly diagram workflows without carrying Vault-specific content.

• GitHub Pages documentation
• npm package vaults-diagram-tools@0.1.3
• MCP Registry io.github.Malnati/vaults-diagram-tools
• Smithery server
• GitHub release v0.1.1
• Quay.io Podman image quay.io/ricardomalnati/vaults-diagram-tools:v0.1.0
• GitHub App
• Brand assets
• Homebrewery package page

What is included

• Mermaid renderer extracted from the Vaults toolchain.
• Source-code to Mermaid diagram generator.
• MCP stdio server with three explicit tools, published in MCP Registry as io.github.Malnati/vaults-diagram-tools.
• Offline-capable release assets for zip and container distribution.
• Packaging templates for Homebrew, deb/rpm, VS Code, CDN, Docker, and Podman.

Content-management workflows outside diagram generation are not part of this package.

Quick start

Install in a project:

npm install -D vaults-diagram-tools

Render one Mermaid source to durable assets:

npx vaults-mermaid-render path/to/diagram.mmd --output-dir out --manifest out/manifest.json

Generate Mermaid diagrams from source code:

npx vaults-source-diagrams --source-dir src --output-dir diagrams

Run the MCP stdio server:

npx vaults-diagram-mcp

Use one-shot npx when the project should not keep a dependency:

npx --yes --package vaults-diagram-tools vaults-mermaid-render path/to/diagram.mmd --output-dir out
npx --yes --package vaults-diagram-tools vaults-source-diagrams --source-dir src --output-dir diagrams
npx --yes --package vaults-diagram-tools vaults-diagram-mcp

Core tools

Additional package binaries are compatibility entrypoints for older Vaults paths, optional text renderers, and Podman workflows.

Workflows

• Markdown docs: keep the Mermaid source as a linked .mmd, render .svg and .jpg, and show source inline with a fenced mermaid block.
• Source graph reviews: generate diagrams from real source paths and inspect manifest selection data for requested files, omitted connectors, and rendered outputs.
• Agent automation: use the MCP server when clients need diagram rendering through a narrow, explicit tool surface. Current registry entry is active at version 0.1.3, and the Smithery server page is already published.
• Release packaging: ship npm, zip, container, and offline vendor artifacts while preserving license and notice files.

Download and distribution

npm registry

Use the published npm package when you want the normal Node.js toolchain installation. Current npm latest is vaults-diagram-tools@0.1.3:

npm install -D vaults-diagram-tools
npx vaults-mermaid-render path/to/diagram.mmd --output-dir out --manifest out/manifest.json
npx vaults-source-diagrams --source-dir src --output-dir diagrams
npx vaults-diagram-mcp

One-shot with npx

Use --package when the project should not keep the dependency:

npx --yes --package vaults-diagram-tools vaults-mermaid-render path/to/diagram.mmd --output-dir out
npx --yes --package vaults-diagram-tools vaults-source-diagrams --source-dir src --output-dir diagrams
npx --yes --package vaults-diagram-tools vaults-diagram-mcp

npm package from GitHub

Use the GitHub package source when testing a commit before a registry release:

npm install github:malnati/vaults-diagram-tools
npx vaults-mermaid-render path/to/diagram.mmd --output-dir out

GitHub release assets

The latest GitHub Release and GHCR image remain v0.1.1; the Quay.io Podman image is published at v0.1.0; npm and MCP Registry metadata have advanced to 0.1.3:

• vaults-diagram-tools-0.1.1.tgz
• vaults-diagram-tools-0.1.1.zip
• ghcr.io/malnati/vaults-diagram-tools:v0.1.1
• quay.io/ricardomalnati/vaults-diagram-tools:v0.1.0

Local checkout

Use the checkout for development, validation, or release preparation:

git clone https://github.com/malnati/vaults-diagram-tools.git
cd vaults-diagram-tools
npm ci
npm test
node packages/renderer/render-mermaid-assets.mjs examples/simple/flowchart.mmd --output-dir tmp/rendered
node packages/source-diagrams/source-diagrams.mjs --source-dir packages/mcp --output-dir tmp/source-diagrams
node packages/mcp/server.mjs

Container, Docker, and Podman

Build locally:

docker build -f containers/Containerfile -t vaults-diagram-tools:local .
podman build -f containers/Containerfile -t vaults-diagram-tools:local .

Run a render from the GHCR image:

docker run --rm \
  -v "$PWD/examples/simple:/work/input:ro" \
  -v "$PWD/tmp/container-output:/work/output:rw" \
  ghcr.io/malnati/vaults-diagram-tools:v0.1.1 \
  --output-dir /work/output /work/input/flowchart.mmd

Run the published Podman image from Quay.io:

podman run --rm \
  -v "$PWD/examples/simple:/work/input:ro" \
  -v "$PWD/tmp/container-output:/work/output:rw" \
  quay.io/ricardomalnati/vaults-diagram-tools:v0.1.0 \
  --output-dir /work/output /work/input/flowchart.mmd

Quay.io also exposes 0.1.0 and latest tags for the same published package line.

Podman helper scripts are available through vaults-mermaid-podman-build, vaults-mermaid-podman-render, and vaults-mermaid-podman-test.

CDN facade

The package is CLI-first. CDN endpoints expose browser-safe metadata/helpers only; SVG/JPEG rendering still runs through Node.js, MCP, or the container runtime.

https://cdn.jsdelivr.net/npm/vaults-diagram-tools/packaging/cdn/vaults-diagram-tools.mjs
https://unpkg.com/vaults-diagram-tools/packaging/cdn/vaults-diagram-tools.mjs

Command line usage

After installing from npm, run public CLIs directly from node_modules/.bin, npm exec, or npx:

vaults-mermaid-render path/to/diagram.mmd --output-dir out --png --ascii --manifest out/manifest.json
vaults-source-diagrams --source-dir src --output-dir diagrams --langs auto --diagrams dependency,class
vaults-diagram-mcp

One-shot examples:

npx --yes --package vaults-diagram-tools vaults-mermaid-render examples/simple/flowchart.mmd --output-dir tmp/vaults-diagram-tools
npx --yes --package vaults-diagram-tools vaults-source-diagrams --source-dir packages/mcp --output-dir tmp/source-diagrams --render-mode placeholder
npx --yes --package vaults-diagram-tools vaults-diagram-mcp

Local checkout equivalents:

node packages/renderer/render-mermaid-assets.mjs examples/simple/flowchart.mmd --output-dir tmp/vaults-diagram-tools
node packages/source-diagrams/source-diagrams.mjs --source-dir packages/mcp --output-dir tmp/source-diagrams
node packages/mcp/server.mjs

MCP tools

vaults-diagram-mcp exposes exactly three tools:

• render_mermaid_text
• render_mermaid_file
• generate_source_diagrams

Example client command:

vaults-diagram-mcp

The MCP adapter passes theme and rendering options through to the same renderer used by the CLI, so a client can request theme: "dracula" and receive .svg + .jpg artifacts.

Dracula diagram examples

The diagrams below were generated by this repository with vaults-mermaid-render --theme dracula; Markdown links the generated assets instead of embedding SVG/JPEG.

Install and usage flow

• Links: Mermaid source / SVG / JPEG

flowchart LR
  Install["Install"] --> Npm["npm registry"]
  Install --> Npx["npx one-shot"]
  Install --> GitHub["GitHub npm"]
  Install --> Local["Local checkout"]
  Install --> Container["Docker Podman GHCR Quay.io"]

  Npm --> Cli["Public CLIs"]
  Npx --> Cli
  GitHub --> Cli
  Local --> Cli
  Container --> Cli

  Cli --> Render["vaults-mermaid-render"]
  Cli --> Source["vaults-source-diagrams"]
  Cli --> Mcp["vaults-diagram-mcp"]

  Render --> Svg["SVG Dracula"]
  Render --> Jpg["JPEG Dracula"]
  Source --> Mermaid["Mermaid source"]
  Source --> Svg
  Mcp --> Tools["3 explicit MCP tools"]

Tooling architecture

• Links: Mermaid source / SVG / JPEG

flowchart TB
  User["User or agent"] --> Markdown["Markdown docs"]
  User --> Cli["CLI workflow"]
  User --> McpClient["MCP client"]

  Cli --> Renderer["vaults-mermaid-render"]
  Cli --> SourceDiagrams["vaults-source-diagrams"]
  McpClient --> McpServer["vaults-diagram-mcp"]
  McpServer --> Renderer
  McpServer --> SourceDiagrams

  SourceDiagrams --> SourceTree["Source tree"]
  SourceDiagrams --> GeneratedMmd["Generated .mmd"]
  GeneratedMmd --> Renderer

  Renderer --> Svg[".svg"]
  Renderer --> Jpeg[".jpg"]
  Renderer --> Manifest["manifest.json"]

  Svg --> Markdown
  Jpeg --> Markdown
  GeneratedMmd --> Markdown

MCP package source graph

• Links: Generated index / Mermaid source / SVG / JPEG

flowchart LR
  N1["server.mjs"]
  N2["tests/mcp-tools.test.mjs"]
  N3["tools.mjs"]
  N1 --> N3
  N2 --> N3

Brand assets

The repository, GitHub Pages landing, Actions summaries, release notes, GitHub App badge, and social preview use one deterministic brand kit generated from the current landing visual language.

• Brand manifest
• Logo SVG / Logo PNG
• Repository banner
• Social preview PNG / Social preview JPEG
• GitHub App badge
• Actions banner
• Release banner

Regenerate and verify the kit with:

npm run brand:generate
npm run brand:check

Compliance and artifact policy

Markdown diagram policy

Generated Markdown should link artifacts and show source in a mermaid fenced block:

#### Diagram title
- Links: [Mermaid source](docs/assets/diagrams/install-usage-flow.mmd) / [SVG](docs/assets/diagrams/install-usage-flow.svg) / [JPEG](docs/assets/diagrams/install-usage-flow.jpg)

```mermaid
flowchart TD
  A["Source"] --> B["Rendered assets"]
```

SVG and JPEG files are delivery artifacts. Markdown should link them instead of embedding them as images by default.

Credits and license compliance

• Project license: MIT.
• Project notices: NOTICE.md.
• Third-party credits and license index: THIRD_PARTY_NOTICES.md.
• License verification: npm run license:check; refresh generated notices with npm run license:generate.
• Dracula-colored documentation diagrams credit the MIT-licensed Dracula Theme palette through beautiful-mermaid.
• Icon data credits include Font Awesome 4, SVG Logos by Gil Barbara, and Lucide Icons via Iconify JSON packages.
• Release artifacts must preserve LICENSE, NOTICE.md, THIRD_PARTY_NOTICES.md, and upstream license files bundled by packaged dependencies or the offline vendor runtime.

Offline vendor runtime

The source tree does not commit node_modules. Build and release jobs create offline vendor assets with:

npm run vendor:refresh
npm run test:vendor:offline

The renderer can run from normal npm dependencies during development, or from packages/renderer/vendor/node when MMDC_VENDOR_ONLY=1.

The default renderer is the Node/JS/WASM vendor path and does not require Chromium, Puppeteer, mmdc, ImageMagick, or npx. The legacy shell wrapper only uses mmdc when explicitly requested with MMDC_RENDER_ENGINE=mmdc; automatic fallback to Puppeteer is disabled.

GitHub App

The public vaults-diagram-tools GitHub App is the installable read-only app surface for this package.

• Install URL: https://github.com/apps/vaults-diagram-tools/installations/new
• Purpose: read-only installs for validating tags, release assets, and package metadata around this repository.
• Permissions: repository contents read-only, plus GitHub metadata access.
• Webhooks: disabled; this release does not run a webhook backend.
• Marketplace: not listed in GitHub Marketplace for the current package line.
• Secrets: no private key, client secret, or webhook secret is stored in this repository.

Distribution status

Working in v1:

• npm package publication and GitHub install flow
• Docker/Podman images through GHCR and Quay.io
• MCP server
• MCP Registry entry io.github.Malnati/vaults-diagram-tools active at version 0.1.3
• Smithery server page for ricardomalnati/vaults-diagram-tools
• zip release
• GitHub Actions CI, release, CodeQL, and Pages workflows
• Public read-only GitHub App install surface
• Homebrewery package page with searchable tags

Templates in v1:

• Homebrew formula
• deb/rpm through nfpm
• VS Code extension shell
• CDN facade through npm/jsDelivr/unpkg

Current release

vaults-diagram-tools is published as npm 0.1.3 and MCP Registry server io.github.Malnati/vaults-diagram-tools version 0.1.3. The latest GitHub Release and GHCR image remain v0.1.1; Quay.io carries the Podman image line at v0.1.0.

Documentation

• GitHub Pages documentation
• Markdown source for the landing page
• Vaults compatibility notes
• Homebrewery package page
• npm package vaults-diagram-tools@0.1.3
• MCP Registry entry
• Smithery server
• GitHub release v0.1.1
• Quay.io Podman image
• GitHub App
• Contributing guide
• Security policy