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onenote-mcp: Instructions file for Codex

AGENTS.md

onenote-mcp AGENTS.md is an instructions file for Codex, OpenCode from seanGSISG/onenote-mcp. It costs 787 tokens per session, scanned A, original, MIT.

Setup instructions for an OneNote integration that provides a Codex plugin and an MCP server. MCP is a standard way for an AI tool to access external tools and data.

In plain words
What is it for?
They are for checking prerequisites, configuring the marketplace, installing or re-enabling the OneNote plugin, and verifying that it is available in Codex.
Why use it?
They guide installation and authentication so the integration can be enabled without manually editing configuration files.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Codex.

This is seanGSISG/onenote-mcp's own configuration. It tells Codex and OpenCode how to work on onenote-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything onenote-mcp configures →

not rated 1repo 3mo ago A scan 787 tokens original MIT
View source ↗ seanGSISG/onenote-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to seanGSISG/onenote-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/seanGSISG/onenote-mcp/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/seanGSISG/onenote-mcp

Made for: Codex, OpenCode.

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.

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README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/seangsisg/onenote-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/seangsisg/onenote-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 787 This file is loaded in full into every session.
When invoked 787 The same file — it is already loaded in full.
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.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00787 $0.00787
Opus 5.5 $0.00315 $0.00315
Sonnet 5.5 $0.00157 $0.00157
Haiku 4.5 $0.00079 $0.00079

Measured 1mo ago against content hash 5b3d763985bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

onenote-mcp AGENTS.md 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.

AGENTS.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OneNote setup for the Codex desktop app

This repository distributes the onenote Codex plugin and its @seangsisg/onenote-mcp server. When a user asks you to install, configure, enable, or test this integration, perform the setup for them. Do not ask them to edit JSON or TOML manually.

Preferred desktop-app setup

The Codex desktop app, Codex CLI, and IDE extension share plugin and MCP configuration. Install the complete plugin so the user gets both the OneNote workflow skill and all MCP tools.

  1. Confirm that node --version reports Node.js 20 or newer, npx --version succeeds, and codex plugin --help succeeds. If a prerequisite is missing, explain what is missing and stop without changing configuration.

  2. Check codex plugin marketplace list for the marketplace named seangsisg-onenote.

  3. If the marketplace is not configured, run:

    codex plugin marketplace add seanGSISG/onenote-mcp

    If it is already configured, refresh its Git snapshot instead:

    codex plugin marketplace upgrade seangsisg-onenote

  4. Install or re-enable the plugin:

    codex plugin add onenote@seangsisg-onenote

  5. Verify that codex plugin list reports onenote@seangsisg-onenote as installed and enabled.

  6. Run codex mcp get onenote and confirm that the server is enabled and points at the pinned 1.0.2 npm tarball.

  7. Tell the user to restart the Codex desktop app completely. After it restarts, they must open a new task to use and authenticate the newly installed tools. A new task without restarting the app is not a sufficient plugin reload.

Do not add the marketplace repeatedly. If another installed plugin already provides an onenote MCP server, preserve the working plugin and explain the conflict before replacing anything.

MCP-only fallback

Use this only if the installed Codex build does not support codex plugin but does support codex mcp:

codex mcp add onenote -- npx -y https://registry.npmjs.org/@seangsisg/onenote-mcp/-/onenote-mcp-1.0.2.tgz

Read the full file on GitHub · 85 lines

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.

  1. 1mo ago First seen · 85 lines · 787 tokens per session scan A 5b3d763985bb

Subscribe to this mod's changes

onenote-mcp AGENTS.md is an instructions file published in the GitHub repository seanGSISG/onenote-mcp (1 stars, last pushed 3mo ago), licensed MIT. It adds 787 tokens to every session, about $0.0031 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 2026-08-31.

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