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 rhtevan/agentfs --skill goose-nextai-drawiogit clone --depth 1 https://github.com/rhtevan/agentfsWrote 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/rhtevan/agentfs/goose-nextai-drawio)<a href="https://agentmods.dev/skills/rhtevan/agentfs/goose-nextai-drawio"><img src="https://agentmods.dev/badge/skills/rhtevan/agentfs/goose-nextai-drawio/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/rhtevan/agentfs/goose-nextai-drawio"><img src="https://agentmods.dev/badge/skills/rhtevan/agentfs/goose-nextai-drawio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00038 | $0.02077 |
| Opus 5 | $0.00019 | $0.01038 |
| Sonnet 5 | $0.00008 | $0.00415 |
| Haiku 4.5 | $0.00004 | $0.00208 |
Grade A, and why
goose-nextai-drawio 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 6d 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 — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Next AI Draw.io — Goose MCP Extension
Manage the next-ai-draw-io
MCP server as a Goose custom extension. This skill installs the
@next-ai-drawio/mcp-server npm package locally (avoiding repeated
npx downloads), registers it as a stdio extension in Goose's
config.yaml, and provides teardown and upgrade operations. Use when
the user wants AI-powered draw.io diagram generation with real-time
browser preview from inside a Goose session.
Trade-off awareness: This extension adds ~1,600 tokens of tool
definitions to every Goose turn (10 tools). For agent-native diagram
generation without the per-turn context tax, consider the agentfs-archify
skill instead — it produces self-contained HTML diagrams from a
typed JSON spec with zero idle token cost.
Prerequisites
- Node.js >= 18 (
node --version) - npm / npx available
- Goose installed with
developerextension enabled ~/.config/goose/config.yamlexists (standard Goose config location)
Operations
Setup
Install the MCP server package locally and register it in Goose config.
bash ~/.agents/skills/goose-nextai-drawio/scripts/manage.sh setup
What it does:
- Checks Node.js version (>= 18 required)
- Installs
@next-ai-drawio/mcp-serverglobally vianpm install -g - Locates the installed binary (
next-ai-drawio-mcp) - Backs up
~/.config/goose/config.yaml - Adds a
nextaidrawioextension entry (type: stdio) to the config - Reports the registration — user must restart Goose to activate
After setup, the user can:
- Enable the extension via Goose settings or
manage_extensions - Use natural language to create draw.io diagrams (the MCP server opens a browser tab with a live draw.io editor)
Teardown
Remove the extension from Goose config and uninstall the package.
bash ~/.agents/skills/goose-nextai-drawio/scripts/manage.sh teardown
What it does:
- Removes the
nextaidrawioentry from Goose config - Uninstalls
@next-ai-drawio/mcp-serverglobally - Reports completion — user must restart Goose to take effect
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 6d ago Changed 0662290d5210
- 10d ago First seen · 201 lines · 38 tokens per session scan A 9b2c52ee0861
goose-nextai-drawio is a skill published in the GitHub repository rhtevan/agentfs (2 stars, last pushed today), licensed Apache-2.0. It adds 38 tokens to every session and 2,077 once invoked, about $0.0002 per session on Opus 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 2026-08-31.
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