What is NisseKomm AGENTS.md?

Repository instructions for AI agents working on NisseKomm, a digital advent-calendar game for children aged 9–12. They describe the project, its code structure, design and content rules, and required checks.

Use them to navigate the project, understand its game mechanics and technical patterns, and verify code with the required pnpm check command.

They help changes fit the existing game architecture, Norwegian content, visual design, and development workflow.

How Starefossen/NisseKomm configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to Starefossen/NisseKomm. 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/Starefossen/NisseKomm/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/Starefossen/NisseKomm

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/starefossen/nissekomm/agents-md/github.svg)](https://agentmods.dev/instructions/starefossen/nissekomm/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/starefossen/nissekomm/agents-md"><img src="https://agentmods.dev/badge/instructions/starefossen/nissekomm/agents-md/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/instructions/starefossen/nissekomm/agents-md"><img src="https://agentmods.dev/badge/instructions/starefossen/nissekomm/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,776 This file is loaded in full into every session.

When invoked 2,776 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.

Model	Per session	Once invoked
Fable 5.1	$0.02776	$0.02776
Opus 5.5	$0.01110	$0.01110
Sonnet 5.5	$0.00555	$0.00555
Haiku 4.5	$0.00278	$0.00278

Measured 2mo ago against content hash 9bf5a0bd9380, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

NisseKomm 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 2mo 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 · 288 lines

How it starts

The opening of the file, as written. The whole thing — 288 lines — stays where its author put it; the contents beside it link to each section on GitHub.

NisseKomm - Development Guide for AI Agents

Important: Keep this document updated when making changes to the project. Always run pnpm check at the end of coding sessions to verify code quality. Assume the dev server is already running at http://localhost:3000.

Do NOT create new markdown files (like SUMMARY.md, CHANGES.md, etc.) to document your work unless explicitly requested by the user.

Session Starter (you're here): Project essence, critical patterns, environment setup Deep Dive References:

📐 ARCHITECTURE.md - Layout patterns, module system, state management, date handling
🎮 IMPLEMENTATION.md - Game mechanics, user flows, component behaviors
🎨 DESIGN_SYSTEM.md - Visual design, colors, animations, responsive patterns
✍️ CONTENT_GUIDE.md - Norwegian vocabulary, character voices, puzzle design

Project Overview

NisseKomm is an advent calendar experience for children (ages 9-12) that bridges the physical and digital worlds. Rampenissen, the silly but friendly elf stationed with the kids, needs their help on a mission from Julius (Santa). Kids solve daily riddles by finding clues in both the real world and inside NisseKomm - the digital headquarters for critical Snøfall operations.

Core Experience: Rampenissen's daily emails → scavenge for physical clues → access digital HQ → combine hints from both worlds → solve riddles → unlock Julius' secrets.

The Physical-Digital Bridge: This is NOT a purely digital game. Success requires exploring BOTH worlds - searching the house for physical clues while investigating files in NisseKomm's retro CRT terminal. The two worlds intertwine throughout December 1-24.

Universe: Based on Snøfall TV series - Julius (Santa) in magical Snøfall with Nissemor and elves. Rampenissen does humorous mischiefs during advent while keeping a watchful eye on the kids, but this year he needs their problem-solving help.

Read the full file on GitHub · 288 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.

2mo ago First seen · 288 lines · 2,776 tokens per session scan A 9bf5a0bd9380

Subscribe to this mod's changes

NisseKomm AGENTS.md is an instructions file published in the GitHub repository Starefossen/NisseKomm (5 stars, last pushed 24d ago), licensed MIT. It adds 2,776 tokens to every session, about $0.0111 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.

Game development

NisseKomm AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
NisseKomm AGENTS.mdStarefossen/NisseKomm	Instructions file	5	24d ago	MIT	A	2,776	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

NisseKomm: Instructions file for Codex