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sandraschi

sketchboard-excalidraw-mcp

by sandraschi

Server Configuration

Describes the environment variables required to run the server.

NameRequiredDescriptionDefault

No arguments

Capabilities

Features and capabilities supported by this server

CapabilityDetails
tools
{
  "listChanged": true
}
logging
{}
prompts
{
  "listChanged": false
}
resources
{
  "subscribe": false,
  "listChanged": false
}
extensions
{
  "io.modelcontextprotocol/ui": {}
}
experimental
{}

Tools

Functions exposed to the LLM to take actions

NameDescription
statusA

Report server identity and which capability groups are wired up yet.

This is the one real tool in the day-1 scaffold - everything else is registered but returns an explicit not_implemented result.

Return Format

{"server": str, "version": str, "capabilities": dict[str, str]}

Examples

status()

render_svgA

Render Excalidraw element JSON to SVG via headless Chromium (Playwright).

NOT IMPLEMENTED YET. Day 2 work: port bassimeledath's warm-Chromium exportToSvg approach into sketchboard_excalidraw_mcp/render.py using a locally vendored excalidraw JS bundle (no CDN dependency at runtime).

Return Format

{"success": False, "error": str, "error_type": "not_implemented", "suggestions": list[str]}

mermaid_to_excalidrawA

Convert a Mermaid diagram to Excalidraw elements and optionally render it.

NOT IMPLEMENTED YET. Planned to wrap the official @excalidraw/mermaid-to-excalidraw npm package via a small Node/Bun shim rather than reimplementing Mermaid parsing.

Return Format

{"success": False, "error": str, "error_type": "not_implemented", "suggestions": list[str]}

batch_renderA

Batch-render README diagrams across a list of fleet repos.

NOT IMPLEMENTED YET. Day 2/3 work: browser-context pool over the one warm Chromium instance (not one page reused sequentially), so a 200-repo run doesn't serialize behind a single tab.

Return Format

{"success": False, "error": str, "error_type": "not_implemented", "suggestions": list[str]}

Prompts

Interactive templates invoked by user choice

NameDescription

No prompts

Resources

Contextual data attached and managed by the client

NameDescription

No resources

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