An MCP server that reads a three.ws tutoring session's payment ledger and closes it to produce an attested invoice. MCP is a standard way for AI agents to call tools.

Checking session charges and ending a pay-as-you-learn tutoring session.

It provides the agent with session billing information and a final invoice without handling the tutoring questions themselves.

tutor-mcp — Plugin for Claude Code by nirholas/ai-tutor-mcp

Install

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.

Clone the repo

git clone --depth 1 https://github.com/nirholas/ai-tutor-mcp

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/nirholas/ai-tutor-mcp/tutor-mcp/github.svg)](https://agentmods.dev/plugins/nirholas/ai-tutor-mcp/tutor-mcp)

Your own site

<a href="https://agentmods.dev/plugins/nirholas/ai-tutor-mcp/tutor-mcp"><img src="https://agentmods.dev/badge/plugins/nirholas/ai-tutor-mcp/tutor-mcp/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/nirholas/ai-tutor-mcp/tutor-mcp"><img src="https://agentmods.dev/badge/plugins/nirholas/ai-tutor-mcp/tutor-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 1 skill, 1 MCP server cost 57 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

tutor-mcp 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 today.

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.

plugins/tutor-mcp/.claude-plugin/plugin.json · 20 lines

What it actually says

{
  "name": "tutor-mcp",
  "version": "0.1.2",
  "description": "MCP server that reads a three.ws Pay-As-You-Learn session ledger and closes it for an attested invoice.",
  "author": {
    "name": "nirholas"
  },
  "repository": "https://github.com/nirholas/ai-tutor-mcp",
  "homepage": "https://nirholas.github.io/ai-tutor-mcp/",
  "license": "Apache-2.0",
  "keywords": [
    "mcp",
    "three-ws",
    "tutor",
    "ledger",
    "invoice",
    "billing"
  ]
}

Contents

What it installs

The manifest is a name and a version. 1 skill, 1 MCP server travel with it, and installing the plugin installs all of them — 57 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json 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.

icon.png 328 KB

Changes

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.

today First seen · 20 lines scan A 7acd76e9b10c

Subscribe to this mod's changes

tutor-mcp is a plugin published in the GitHub repository nirholas/ai-tutor-mcp (9 stars, last pushed today), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-11-11.

Finance and fintech Learning and teaching ai-agents invoice mcp mcp-server model-context-protocol three-ws

tutor-mcp next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
tutor-mcpnirholas/ai-tutor-mcp	Plugin	9	today	Apache-2.0	A	—	Claude Code
secedgar-mcp-servercyanheads/secedgar-mcp-server	Plugin	12	2d ago	Apache-2.0	A	—	Claude Code
0xarchive0xArchiveIO/0xarchive-mcp	Plugin	13	3d ago	MIT	A	—	Cursor
0xarchive0xArchiveIO/0xarchive-mcp	Plugin	13	3d ago	MIT	A	—	Gemini CLI
x402-payments-mcpnirholas/x402-payments-mcp	Plugin	9	today	Apache-2.0	A	—	Claude Code
openfec-mcp-servercyanheads/openfec-mcp-server	Plugin	2	14d ago	Apache-2.0	A	—	Claude Code
aws-billingServosity/msp-skills	Plugin	74	today	none	A	—	Claude Code