# Send Mermaid Diagrams to your agent
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
## Fast path
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
## Suggested prompts
### New install

```text
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Then review README.md for any prerequisites, environment setup, or post-install checks. Tell me what you changed and call out any manual steps you could not complete.
```
### Upgrade existing

```text
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Then review README.md for any prerequisites, environment setup, or post-install checks. Summarize what changed and any follow-up checks I should run.
```
## Machine-readable fields
```json
{
  "schemaVersion": "1.0",
  "item": {
    "slug": "mermaid",
    "name": "Mermaid Diagrams",
    "source": "tencent",
    "type": "skill",
    "category": "开发工具",
    "sourceUrl": "https://clawhub.ai/jarekbird/mermaid",
    "canonicalUrl": "https://clawhub.ai/jarekbird/mermaid",
    "targetPlatform": "OpenClaw"
  },
  "install": {
    "downloadUrl": "/downloads/mermaid",
    "sourceDownloadUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=mermaid",
    "sourcePlatform": "tencent",
    "targetPlatform": "OpenClaw",
    "packageFormat": "ZIP package",
    "primaryDoc": "SKILL.md",
    "includedAssets": [
      "README.md",
      "SKILL.md",
      "generate-test.sh",
      "package.json"
    ],
    "downloadMode": "redirect",
    "sourceHealth": {
      "source": "tencent",
      "status": "healthy",
      "reason": "direct_download_ok",
      "recommendedAction": "download",
      "checkedAt": "2026-04-30T16:55:25.780Z",
      "expiresAt": "2026-05-07T16:55:25.780Z",
      "httpStatus": 200,
      "finalUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
      "contentType": "application/zip",
      "probeMethod": "head",
      "details": {
        "probeUrl": "https://wry-manatee-359.convex.site/api/v1/download?slug=network",
        "contentDisposition": "attachment; filename=\"network-1.0.0.zip\"",
        "redirectLocation": null,
        "bodySnippet": null
      },
      "scope": "source",
      "summary": "Source download looks usable.",
      "detail": "Yavira can redirect you to the upstream package for this source.",
      "primaryActionLabel": "Download for OpenClaw",
      "primaryActionHref": "/downloads/mermaid"
    },
    "validation": {
      "installChecklist": [
        "Use the Yavira download entry.",
        "Review SKILL.md after the package is downloaded.",
        "Confirm the extracted package contains the expected setup assets."
      ],
      "postInstallChecks": [
        "Confirm the extracted package includes the expected docs or setup files.",
        "Validate the skill or prompts are available in your target agent workspace.",
        "Capture any manual follow-up steps the agent could not complete."
      ]
    }
  },
  "links": {
    "detailUrl": "https://openagent3.xyz/skills/mermaid",
    "downloadUrl": "https://openagent3.xyz/downloads/mermaid",
    "agentUrl": "https://openagent3.xyz/skills/mermaid/agent",
    "manifestUrl": "https://openagent3.xyz/skills/mermaid/agent.json",
    "briefUrl": "https://openagent3.xyz/skills/mermaid/agent.md"
  }
}
```
## Documentation

### Mermaid Diagrams Skill

Generate diagrams from text using Mermaid.

### Requirements

@mermaid-js/mermaid-cli (npm install -g @mermaid-js/mermaid-cli)

### Usage

Write Mermaid syntax to a .mmd file
Run mmdc to render PNG/SVG
Return the image to the user

### Basic Command

mmdc -i input.mmd -o output.png -t dark -b transparent

### Options

FlagDescription-iInput .mmd file-oOutput file (.png, .svg, .pdf)-tTheme: default, dark, forest, neutral-bBackground color (transparent, hex)-wWidth in pixels (default: 800)-HHeight in pixels-sScale factor (default: 1, use 2-3 for high-res)-cConfig JSON file for advanced theming

### Supported Diagram Types

Flowchart: graph TD / graph LR
Sequence: sequenceDiagram
Class: classDiagram
State: stateDiagram-v2
ER: erDiagram
Gantt: gantt
Pie: pie
Mindmap: mindmap
Timeline: timeline
Git graph: gitGraph
Quadrant: quadrantChart
Block: block-beta

### Workflow

Determine the best diagram type for what the user wants
Write the .mmd file to /tmp/mermaid-<name>.mmd
Render: mmdc -i /tmp/mermaid-<name>.mmd -o /tmp/mermaid-<name>.png -t dark -b transparent -s 2
Show the image to the user via Read tool
Clean up temp files if not needed

### Example: Architecture Diagram

graph TD
    A[Client] -->|HTTPS| B[API Gateway]
    B --> C[Auth Service]
    B --> D[App Server]
    D --> E[(PostgreSQL)]
    D --> F[(Redis Cache)]

### Example: Sequence Diagram

sequenceDiagram
    participant U as User
    participant A as API
    participant DB as Database
    U->>A: POST /login
    A->>DB: Validate credentials
    DB-->>A: User record
    A-->>U: JWT token

### Tips

Use graph LR for left-to-right flow, graph TD for top-down
Keep node labels short — detail goes in tooltips or notes
Use subgraphs to group related components
For dark backgrounds, use -t dark -b transparent
Scale -s 2 or -s 3 for sharp images on retina displays
Always use pty: false when calling mmdc

### Theming

For custom colors, create a config JSON:

{
  "theme": "base",
  "themeVariables": {
    "primaryColor": "#f59e0b",
    "primaryTextColor": "#1a1a1a",
    "primaryBorderColor": "#d97706",
    "lineColor": "#6b7280",
    "secondaryColor": "#10b981",
    "tertiaryColor": "#3b82f6"
  }
}

Then: mmdc -i input.mmd -o output.png -c config.json
## Trust
- Source: tencent
- Verification: Indexed source record
- Publisher: jarekbird
- Version: 1.0.0
## Source health
- Status: healthy
- Source download looks usable.
- Yavira can redirect you to the upstream package for this source.
- Health scope: source
- Reason: direct_download_ok
- Checked at: 2026-04-30T16:55:25.780Z
- Expires at: 2026-05-07T16:55:25.780Z
- Recommended action: Download for OpenClaw
## Links
- [Detail page](https://openagent3.xyz/skills/mermaid)
- [Send to Agent page](https://openagent3.xyz/skills/mermaid/agent)
- [JSON manifest](https://openagent3.xyz/skills/mermaid/agent.json)
- [Markdown brief](https://openagent3.xyz/skills/mermaid/agent.md)
- [Download page](https://openagent3.xyz/downloads/mermaid)