Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add activeing123/mcptoon --skill authoringgit clone --depth 1 https://github.com/activeing123/mcptoonWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/activeing123/mcptoon/authoring)<a href="https://agentmods.dev/skills/activeing123/mcptoon/authoring"><img src="https://agentmods.dev/badge/skills/activeing123/mcptoon/authoring/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/activeing123/mcptoon/authoring"><img src="https://agentmods.dev/badge/skills/activeing123/mcptoon/authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00036 | $0.00565 |
| Opus 5.5 | $0.00014 | $0.00226 |
| Sonnet 5.5 | $0.00007 | $0.00113 |
| Haiku 4.5 | $0.00004 | $0.00056 |
Grade A, and why
authoring scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Author an MCP server entry for mcptoon
All servers live in ~/.mcptoon/config.json under mcpServers. Edit there,
never in agent-side files, then run mcptoon sync.
Entry shapes
stdio (local process):
{
"filesystem": {
"type": "stdio",
"command": "npx",
"args": ["-y", "@modelcontextprotocol/server-filesystem", "/data"],
"env": {"NODE_ENV": "production"}
}
}
streamable-http / sse (remote):
{
"remote-tools": {
"type": "streamable-http",
"url": "https://example.com/mcp"
}
}
Hard rules for stdio commands
commandis ONE executable token: a bare name (npx,uvx,mcptoon) or a./-relative path inside a plugin. Never a shell string, neverbash -c.- Absolute paths in
commandare forbidden; use PATH or./relative. argsis a list of strings. Shell metacharacters belong in args, not incommand.
Plugin entries
Agent Plugins are installed under ~/.mcptoon/plugins/<plugin>/ and merged
automatically with "<plugin>:<server>" names. Their paths can use
placeholders, expanded at install time:
${PLUGIN_ROOT}— the installed plugin directory${PLUGIN_DATA}— the plugin's persistent data directory (survives upgrades)
Plugin-managed entries should be edited by updating the plugin (reinstall with
--force), not by hand-editing the merged config.
Validation loop (always run after writing)
mcptoon doctor # catches syntax, missing binaries, bad urls
mcptoon list # confirm the server is visible
mcptoon health # per-server connectivity, exit 1 if anything is dead
If you generated the entry from documentation, prefer mcptoon install --npm / --pip / --url over hand-writing JSON — it fills the correct shape for you.
Good tool hygiene (for server authors)
- Prefer fewer, well-described tools over many overlapping ones; agents pick tools by description.
- When a server ships a
SKILL.md(Agent Plugins), keep the body actionable: concrete commands, exact flags, no marketing text.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 74 lines · 36 tokens per session scan A d8482a37f8b1
authoring is a skill published in the GitHub repository activeing123/mcptoon (359 stars, last pushed today), licensed Apache-2.0. It adds 36 tokens to every session and 565 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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