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Generates hand-drawn style Excalidraw diagrams with streaming animations and interactive editing.
Do not connect
The assessed surface is high-risk. Remediate the findings before connecting.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The Excalidraw MCP server exposes 5 tools, focused primarily on general-purpose capabilities. Its published description reads: "Generates hand-drawn style Excalidraw diagrams with streaming animations and interactive editing". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates Excalidraw D- — the assessed surface is high-risk and should be remediated before use. Its most notable findings include "Cross-tool shadowing" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check Excalidraw's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add Excalidraw to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.excalidraw.com/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Returns the Excalidraw element format reference with color palettes, examples, and tips. Call this BEFORE using create_view for the first time.
Renders a hand-drawn diagram using Excalidraw elements. Elements stream in one by one with draw-on animations. Call read_me first to learn the element format.
Upload diagram to excalidraw.com and return shareable URL.
Update checkpoint with user-edited state.
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: read_me
A tool description tries to alter the model’s use of another tool.
is BEFORE using create_view for the first time.RecommendationDescriptions must describe only their own tool.
tool: create_view
A tool description tries to alter the model’s use of another tool.
nimations. Call read_me first to learn the element format.RecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: export_to_excalidraw
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "export_to_excalidraw"RecommendationScope tools to the minimum needed.
tool: save_checkpoint
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "save_checkpoint"RecommendationScope tools to the minimum needed.
The server exposes one or more ui:// (MCP Apps) resources whose HTML/JS renders inside the host client — a client-side injection / data-exposure surface most scanners ignore. Flagged for review, not damning on its own.
1 ui:// resource(s); e.g. ui://excalidraw/mcp-app.htmlRecommendationReview each ui:// resource’s markup and scripts; treat host-rendered UI as untrusted, sandbox it, and never expose secrets or conversation context to it.
Validates up to 75,000 URLs per job checking status codes, redirects, and response times.
Pay-per-call AI API marketplace with 47 endpoints — OCR, TTS, LLM chat, image generation, weather, and crypto pricing — paid via x402 USDC micropayments on Base.
EPA drinking water quality data in plain English, providing AI agents with tap water quality information for US cities via nine public-data tools.
AI phone answering and appointment booking tools for service businesses.
Aggregates Romanian TV, streaming, cinema, and theater listings for AI agents.
Agent-callable Parallax services — catalog browsing, pricing, project start, and booking.
Read checkpoint state for restore.