INDIVIDUAL MCP TOOL

napkin_diagrams_update

Edit a Napkin diagram: retitle, describe, REPLACE the whole mermaid source, set visibility, or `archived` (true takes it out of the gallery, false brings it back — the recovery move for a diagram created by mistake).

zerowidth.ainone authenticationAvailability not checked

LIVE ENDPOINT

https://api.zerowidth.ai/mcp/x/napkin

No auth detected

Connect to this endpoint to inspect the live schema for napkin_diagrams_update and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

A tool name or description contains a write-action term.

Parent server

zerowidth.ai

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.zerowidth-mcp]
url = "https://api.zerowidth.ai/mcp/x/napkin"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "zerowidth-mcp": {
      "type": "http",
      "url": "https://api.zerowidth.ai/mcp/x/napkin"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: zerowidth-mcp
Remote MCP URL: https://api.zerowidth.ai/mcp/x/napkin

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "zerowidth-mcp": {
      "url": "https://api.zerowidth.ai/mcp/x/napkin"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "zerowidth-mcp": {
      "type": "http",
      "url": "https://api.zerowidth.ai/mcp/x/napkin"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "zerowidth-mcp",
  "transport": "streamable-http",
  "url": "https://api.zerowidth.ai/mcp/x/napkin"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

search_docs — Search ZeroWidth product documentation.
get_doc — Fetch the full Markdown body of a specific docs page by its slug.
list_docs — Enumerate all available docs pages, optionally filtered by product (e.
comments_list — Lists the comment threads on one workspace entity (open first, then resolved) with authors and timestamps.
comments_create — Posts a comment on a workspace entity — a new thread, or a reply when rootId is given.
comments_resolve — Sets a comment thread's resolved state (rootId = the thread's root comment id).
napkin_boards_list — Lists sketch boards in the active workspace — name, id, kind (sketch / deck), shape count, last activity.
napkin_boards_get — Returns a board's shapes as data — each with its id, kind, position, size, and text — so you can TARGET one to change or remove with napkin_draw (`updates` / `deletes` take these ids and absolute board coordinates).