API & MCP

Everything a person can do on Sketchboard draw.io to SVG, a program or AI agent can do with the same inputs and get the identical result.

HTTP API

POST https://sketchboarddrawiotosvg.usefulweb.app/api/v1/calculate – run Sketchboard draw.io to SVG
GET https://sketchboarddrawiotosvg.usefulweb.app/api/v1/tool – inputs, output schema, examples
OpenAPI 3.1: /openapi.json · /openapi.yaml
Errors: application/problem+json; 422 includes per-field errors.

Sketchboard draw.io to SVG

Reads a .drawio / diagrams.net XML file (plain or compressed pages) or an Excalidraw .excalidraw file, maps shapes, connectors, arrowheads, labels and styles to Sketchboard, and returns a standalone SVG plus a Sketchboard board you can keep editing. It lists what was mapped and what was drawn as a plain shape.

Inputs of Sketchboard draw.io to SVG
Field	Type	Default	Description
`diagram`	textarea	—	draw.io or Excalidraw file content. Paste the XML of a .drawio file (or the JSON of an .excalidraw file), or upload the file below.
`diagramFile`	file	—	File (optional). Used instead of the pasted text when given.
`page`	integer	1	Page number (files with several pages)
`style`	select (clean, sketchy, file)	"clean"	Drawing style

Every result contains

inputs (normalised, defaults applied), summary, result (validated against the published schema), units, assumptions, sources, warnings, computedAt and links.

MCP (Model Context Protocol)

Streamable HTTP endpoint: https://sketchboarddrawiotosvg.usefulweb.app/mcp – protocol revisions 2026-07-28 (stateless) and 2025-11-25 / 2025-06-18 / 2025-03-26 (initialize handshake).
Tools: sketchboard_drawio_to_svg
Local stdio connector: node src/mcp-stdio.ts --tool=sketchboard-drawio-to-svg

{
  "mcpServers": {
    "sketchboard-drawio-to-svg": { "type": "http", "url": "https://sketchboarddrawiotosvg.usefulweb.app/mcp" }
  }
}