Canvs is a remote MCP server that gives an AI agent 6 tools, among them add_elements, add_elements_from_mermaid, delete_elements. It answers at https://app.canvs.io/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.
AI-powered diagrams, mind maps, flowcharts on a free unlimited collaborative whiteboard
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
add_elements | Creates elements on a canvas. Creates a new canvas if room_id is omitted, or adds to the existing canvas if room_id is provided. Use cases: wireframes, UI mockups, freeform illustrations, standalone shapes, and manual layouts that Mermaid d Inputs: room_id, elements |
add_elements_from_mermaid | Creates diagram elements from a Mermaid definition. Creates a new canvas if room_id is omitted, or adds to the existing canvas if room_id is provided. Preferred over add_elements for new diagrams and large changes to existing diagrams whene Inputs: room_id, mermaid, config, timeout |
delete_elements | Delete elements from a canvas. Requires room_id from a previous Canvs tool result. Pass ids array of element IDs to delete. Inputs: room_id, ids |
get_guide | Returns guidance on diagram-creation workflow and tool selection: how to choose between Mermaid and manual element creation, and the recommended iteration workflow. Consult before building complex diagrams. |
query_elements | Query elements on a canvas. Requires room_id from a previous Canvs tool result. Returns elements matching optional filters. Use this before update_elements when making small edits to existing diagrams. If no browser has the canvas open, ret Inputs: room_id, type, filter |
update_elements | Update elements on a canvas. Requires room_id from a previous Canvs tool result. Pass elements array with id and fields to update. IMPORTANT: in each update object ONLY `id` is required; all other fields are optional patch fields. Include O Inputs: room_id, elements |
Every block below points at https://app.canvs.io/mcp. Pick your client and copy.
claude mcp add --transport http canvs https://app.canvs.io/mcp
{
"mcpServers": {
"canvs": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://app.canvs.io/mcp"]
}
}
}{
"mcpServers": {
"canvs": {
"url": "https://app.canvs.io/mcp"
}
}
}{
"servers": {
"canvs": {
"type": "http",
"url": "https://app.canvs.io/mcp"
}
}
}{
"context_servers": {
"canvs": {
"url": "https://app.canvs.io/mcp"
}
}
}{
"mcpServers": {
"canvs": {
"serverUrl": "https://app.canvs.io/mcp"
}
}
}{
"mcpServers": {
"canvs": {
"url": "https://app.canvs.io/mcp"
}
}
}name: Canvs
version: 0.0.1
schema: v1
mcpServers:
- name: Canvs
type: streamable-http
url: https://app.canvs.io/mcp{
"mcpServers": {
"canvs": {
"httpUrl": "https://app.canvs.io/mcp"
}
}
}{
"mcpServers": {
"canvs": {
"type": "http",
"url": "https://app.canvs.io/mcp"
}
}
}{
"mcpServers": {
"canvs": {
"url": "https://app.canvs.io/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapp.canvs.io%2Fmcp&type=streamable_http&id=canvs&name=Canvs
It answered our last check on 24 October 2026 in 246 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
6, as returned by the server's own tools/list on 22 September 2026: add_elements, add_elements_from_mermaid, delete_elements, get_guide, query_elements, update_elements.
It answered our last check on 24 October 2026 in 246 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://app.canvs.io/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.voronkovm. Endpoint host: app.canvs.io. ARD identifier: urn:air:io.github.voronkovm:mcp:canvs.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.