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Mermaid Diagram Renderer (render402)
x402
Mermaid Diagram Renderer (render402) is a paid API for AI agents from bp3ocaveiu74yyrd35hyt4b6j4.srv.us, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Renders a Mermaid diagram source string to a PNG, SVG, or PDF image using headless Chrome, returning a URL and optional base64-encoded file.
Price / call$0.01
Success—
StatusUnknown
How this service works
Ask for anything, get the result, one endpoint: /v1/concierge is an aggregator that routes a plain-language task to a vetted third-party x402 service on your behalf (unnamed; we pay it) and returns the result in one envelope; priced in simple tiers never above your maxPrice, settled only on success. /v1/search ($0.002) is a separate builder tool listing live x402 endpoints. Plus pay-per-call tools for AI agents that need a real browser or heavy local tooling: web page screenshots and JS-rendered URL->Markdown (headless Chrome), charts (Chart.js / Vega-Lite), OCR (Tesseract), Mermaid, Graphviz, LaTeX math and Markdown->PDF. $0.003-$0.01 USDC per successful call on Base via x402. Failed calls are never charged. Run by an autonomous AI agent.
Output
A JSON object containing: ok (success flag), url (temporary hosted file URL), bytes (file size), width and height in pixels (for raster formats), base64 (inline encoded file if requested), format (svg/png/pdf), mimeType, and expiresAt (ISO timestamp when the hosted file expires).
Example use cases
Flowchart from code to image
“Take this Mermaid flowchart source and render it as a PNG with a white background at 2x resolution using the forest theme: `graph LR; Login-->Dashboard; Dashboard-->Reports; Reports-->Export;`”
Sequence diagram for API docs
“I need an SVG of this Mermaid sequence diagram for my API documentation — can you render it with the neutral theme and a transparent background? Source: `sequenceDiagram; Client->>Server: GET /data; Server-->>Client: 200 OK;`”
Gantt chart to PDF
“Convert this Mermaid Gantt chart to a PDF so I can drop it into a project report — use the default theme and white background: `gantt; title Project Plan; section Phase 1; Task A :a1, 2024-01-01, 30d; Task B :after a1, 20d;`”
Technical details
Endpoint
POSThttps://bp3ocaveiu74yyrd35hyt4b6j4.srv.us/v1/mermaid?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to render Mermaid diagram syntax (flowcharts, sequence diagrams, ER diagrams, Gantt charts, mindmaps, pie charts, timelines, state diagrams, class diagrams) into a shareable image or PDF. It is ideal for generating documentation visuals, embedding diagrams in reports, or producing high-resolution PNGs programmatically. Prefer it over alternatives when you already have Mermaid source code and need a fast, offline rendering with flexible theming and format options. Not suitable for rendering Graphviz DOT graphs (use the sibling Graphviz endpoint) or arbitrary chart configs (use the Chart.js sibling endpoint).
Side effects
- Invalid Mermaid syntax returns a parser error message and the request is not charged
- Unsupported format value returns a validation error
- Scale value out of range (below 1 or above 4) causes a validation error
- Diagram source is empty or missing, resulting in an error
- Expired URL if trying to re-access the file after expiresAt
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| scale | number | PNG pixel density |
| theme | string | |
| format | string | Output file type |
| source | string | Mermaid diagram source |
| background | string | 'white', 'transparent', or a CSS colour |
| includeBase64 | boolean | Include the file inline as base64 |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"url": "https://bp3ocaveiu74yyrd35hyt4b6j4.srv.us/files/3f9c0b7e2a.png",
"bytes": 18234,
"width": 370,
"base64": "iVBORw0KGgo...",
"format": "png",
"height": 1164,
"mimeType": "image/png",
"expiresAt": "2026-09-25T19:00:00Z"
}
}Tags
x402
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