What is myinvoice AGENTS.md?

Repository instructions for contributors and AI agents working on MyInvoice, a Czech invoicing application, including guidance about its successor MyÚčto. They describe the project layout, documentation, and development commands.

Use them before modifying MyInvoice to check whether the work belongs in MyÚčto and to follow the repository's contribution rules.

They help prevent changes from being made in the wrong repository and explain where shared fixes and new features belong.

How radekhulan/myinvoice configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to radekhulan/myinvoice. 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/radekhulan/myinvoice/master/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/radekhulan/myinvoice

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/radekhulan/myinvoice/agents-md/github.svg)](https://agentmods.dev/instructions/radekhulan/myinvoice/agents-md)

Your own site

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

Per session 3,010 This file is loaded in full into every session.

When invoked 3,010 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	$0.03010	$0.03010
Opus 5.5	$0.01204	$0.01204
Sonnet 5.5	$0.00602	$0.00602
Haiku 4.5	$0.00301	$0.00301

Measured 2mo ago against content hash c0cefa10fd76, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

myinvoice 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 · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — pravidla pro AI agenty a přispěvatele

Pokyny pro práci s tímto repozitářem (Claude Code, Codex, Cursor, Copilot a další). Platí pro celý repozitář. Obecný popis projektu je v README.md, vývojářská spec v source/.

⚠️ Nejdřív zvaž MyÚčto.cz

Těžiště vývoje se přesunulo do radekhulan/myucto. MyÚčto je nástupce MyInvoice; sdílí s ním společný základ i historii v gitu a pravidelně z něj přebírá změny. Veškerá funkcionalita MyInvoice v něm zůstává navždy zdarma, nadstavba (podvojné účetnictví, uzávěrky, majetek, sklad, EPO podání, rozšířené opravy DPH) je volitelně komerční.

Praktický důsledek pro agenty i přispěvatele:

Novou funkci piš rovnou do MyÚčta, ne sem. Odtud by se do MyÚčta stejně musela portovat a v MyInvoice by zůstala neúplná (chybí jí účetní vrstva, na kterou se váže).
Opravu chyby dělej tam, kde chyba je. Když je ve sdíleném základu, oprav ji v MyÚčtu — MyÚčto z MyInvoice merguje, ne naopak, takže oprava udělaná zde se do MyÚčta dostane až dalším mergem a hrozí konflikt s tamní úpravou téhož místa. Do MyInvoice patří jen to, co se MyÚčta netýká.
Než začneš, ověř, jestli to v MyÚčtu už není hotové. Řada věcí, které tu chybí, tam existuje — nemá smysl je psát podruhé.
Aditivní styl platí i tady. MyÚčto tenhle repozitář merguje, takže velký refaktor sdílených souborů mu prodraží každý další merge. Drž změny malé a lokalizované.
Rozsah čísel migrací: 0125–0999 patří MyInvoice, 1000+ je vyhrazené pro MyÚčto. Nikdy sem nezakládej migraci s číslem 1000 a vyšším, i kdyby řada zdánlivě volná byla — kolidovala by při mergu.

O projektu

MyInvoice.cz — český self-hosted fakturační a účetní systém (vystavené + přijaté faktury, multi-supplier, DPH/KH/SH výkazy, EPO XML, CRM, REST API). Backend PHP 8.5 + Slim 4, frontend Vue 3 + TypeScript + Vite + Tailwind, databáze MariaDB 10.6+ (doporučeno 11.x).

Layout repozitáře

Read the full file on GitHub · 137 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 · 137 lines · 3,010 tokens per session scan A c0cefa10fd76

Subscribe to this mod's changes

myinvoice AGENTS.md is an instructions file published in the GitHub repository radekhulan/myinvoice (289 stars, last pushed 8d ago), licensed MIT. It adds 3,010 tokens to every session, about $0.0120 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 2026-08-30.

myinvoice AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
myinvoice AGENTS.mdradekhulan/myinvoice	Instructions file	289	8d ago	MIT	A	3,010	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
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	2d ago	MIT	A	4,313	Codex, OpenCode

myinvoice: Instructions file for Codex