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 chrischall/gogcli-mcp --skill gogcli-mcp-classroomgit clone --depth 1 https://github.com/chrischall/gogcli-mcpWrote 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/chrischall/gogcli-mcp/gogcli-mcp-classroom)<a href="https://agentmods.dev/skills/chrischall/gogcli-mcp/gogcli-mcp-classroom"><img src="https://agentmods.dev/badge/skills/chrischall/gogcli-mcp/gogcli-mcp-classroom/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/chrischall/gogcli-mcp/gogcli-mcp-classroom"><img src="https://agentmods.dev/badge/skills/chrischall/gogcli-mcp/gogcli-mcp-classroom.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 | $0.00082 | $0.00462 |
| Opus 5 | $0.00041 | $0.00231 |
| Sonnet 5 | $0.00016 | $0.00092 |
| Haiku 4.5 | $0.00008 | $0.00046 |
Grade A, and why
gogcli-mcp-classroom 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 9d 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.
What it actually says
gogcli-mcp-classroom
Extended Google Classroom MCP server via gogcli — 49 tools: auth (5) + 44 dedicated Classroom tools spanning courses, students, teachers, coursework, submissions, announcements, topics, invitations, and profiles.
- Source: github.com/chrischall/gogcli-mcp
Requirements
- gogcli installed and authenticated
- Node.js 18 or later
Setup
{
"mcpServers": {
"gogcli-classroom": {
"command": "npx",
"args": ["-y", "gogcli-mcp-classroom"],
"env": {
"GOG_ACCOUNT": "[email protected]"
}
}
}
}
Classroom Tools
| Area | Tools |
|---|---|
| Courses | list / get / create / update / delete / archive / unarchive |
| Students | list / get / add / remove |
| Teachers | list / get / add / remove |
| Roster | combined students+teachers list |
| Coursework | list / get / create / update / delete |
| Submissions | list / get / grade / return / turn-in / reclaim |
| Announcements | list / get / create / update / delete |
| Topics | list / get / create / update / delete |
| Invitations | list / get / create / accept / delete |
| Profile | get (self or by userId) |
For guardians, guardian-invitations, materials, and assignee management, use gog_classroom_run (the escape hatch).
What ships with it
15 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.
- .claude-plugin/marketplace.json 1.2 KB
- .claude-plugin/plugin.json 766 B
- .mcp.json 252 B
- .mcpbignore 375 B
- CHANGELOG.md 1.5 KB
- manifest.json 7.6 KB
- mint.yaml 4.2 KB
- package.json 1.1 KB
- README.md 2.5 KB
- server.json 1.0 KB
- src/index.ts 577 B runs code
- src/tools/classroom-extra.ts 14 KB runs code
- tests/tools/classroom-extra.test.ts 11 KB runs code
- tsconfig.json 240 B
- vitest.config.ts 327 B runs code
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.
- 9d ago First seen · 49 lines · 82 tokens per session scan A bfc78df4379e
gogcli-mcp-classroom is a skill published in the GitHub repository chrischall/gogcli-mcp (1 stars, last pushed today), licensed MIT. It adds 82 tokens to every session and 462 once invoked, about $0.0004 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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