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mcptoon MCP Server Entry Authoring

Guides Claude to add or edit MCP server entries in mcptoon's config.json with the correct shape, command rules, and validation loop.

Dev & CodingIntermediate★ 202⑂ 8AI score 8/10Last updated: Sep 19, 2026

What it does

  • Produces correctly shaped entries under mcpServers in ~/.mcptoon/config.json for stdio, streamable-http, and sse transports.
  • Enforces hard rules for stdio command: a single executable token only, no shell strings, no bash -c, no absolute paths — metacharacters go in args.
  • Explains Agent Plugin placeholders ${PLUGIN_ROOT} and ${PLUGIN_DATA}, plus the rule that plugin-managed entries are updated by reinstalling, not hand-editing.
  • Always closes with the validation loop: mcptoon doctor → mcptoon list → mcptoon health.

Who it's for

  • Developers managing several MCP servers through mcptoon.
  • Anyone who keeps hitting shape or path errors when hand-writing MCP config JSON.
  • MCP server authors shipping their server as an Agent Plugin.

Examples

  1. "Add the filesystem MCP server rooted at /data" → generates an npx-based stdio entry and verifies with doctor/health.
  2. "Register the remote endpoint https://example.com/mcp" → generates a streamable-http entry.
  3. Instead of hand-writing JSON from docs, it steers you to mcptoon install --npm/--pip/--url so the shape is generated correctly.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/activeing123/mcptoon/HEAD/plugin/mcptoon-skills/skills/authoring/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the plugin/mcptoon-skills/skills/authoring folder from the GitHub repo activeing123/mcptoon into my ~/.claude/skills/activeing123-authoring/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/activeing123/mcptoon.git /tmp/mcptoon && mkdir -p ~/.claude/skills && cp -r /tmp/mcptoon/plugin/mcptoon-skills/skills/authoring ~/.claude/skills/mcptoon-authoring

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repository: git clone https://github.com/activeing123/mcptoon.git /tmp/mcptoon
  3. Create the skills directory: mkdir -p ~/.claude/skills
  4. Copy the skill: cp -r /tmp/mcptoon/plugin/mcptoon-skills/skills/authoring ~/.claude/skills/mcptoon-authoring
  5. Confirm the CLI is available: mcptoon --version (install it per the repo README if missing).
  6. Restart Claude Code and ask it to "add an MCP server to mcptoon" to trigger the skill.
View source on GitHub ↗License: Apache-2.0