encoding

A file-encoding guide for Sankhya Addon Studio projects. It converts and checks Java, XML, Kotlin, and properties files so they use ISO-8859-1, the older character encoding expected by the project.

In plain words
What is it for?
Use it after creating or editing supported source files, when checking a project's character encoding, or when accented text appears corrupted.
Why use it?
It helps prevent broken accented characters and runtime or build problems when files created in UTF-8 are used in a legacy Sankhya environment.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/snk-devcenter/addon-studio/encoding
Any agent
npx skills add snk-devcenter/addon-studio --skill encoding
Clone the repo
git clone --depth 1 https://github.com/snk-devcenter/addon-studio

Made for: Claude Code, Codex.

Per session 145 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,859 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00145 $0.02859
Opus 5 $0.00072 $0.01430
Sonnet 5 $0.00029 $0.00572
Haiku 4.5 $0.00015 $0.00286

Measured yesterday against content hash 7d6658c8f497, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

encoding 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 yesterday.

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/addon-studio/skills/encoding/SKILL.md · 235 lines

How it starts

The opening of the file, as written. The whole thing — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codificacao de Arquivos — Addon Studio 2.0

REGRA CRITICA — SEM EXCECOES

Todo arquivo .java, .xml, .kt e .properties em projetos Addon Studio deve ser salvo em ISO-8859-1 (Latin-1).


Por que ISO-8859-1

O servidor Sankhya (Wildfly legado) e o compilador de addons esperam Latin-1. Arquivo salvo em UTF-8 causa corrupção de acentos e falha silenciosa em runtime.


Regras

Tipo de arquivo Regra
.java / .kt Salvo em ISO-8859-1. Acentos diretamente no encoding ou escapados como é, ç etc.
.xml (datadictionary, dbscripts) Salvo em ISO-8859-1. Cabecalho obrigatorio: <?xml version="1.0" encoding="ISO-8859-1" ?>
.properties Salvo em ISO-8859-1 (formato historico do Java 8 para properties).

O problema com LLMs

LLMs geram arquivos em UTF-8 por padrao. Apos criar ou editar qualquer .java, .xml, .kt ou .properties, converta o encoding antes de usar.

Antes de converter, cheque o charset atual (file -i arquivo.java). So converta se o resultado for charset=utf-8. Arquivo ja em ISO-8859-1 reconvertido de "UTF-8" pode ter acentos corrompidos; e errors='ignore'/errors='replace' apagam ou trocam caracteres silenciosamente.

Mac / Linux — iconv (nativo, preferido)

Duas guardas são obrigatórias em toda conversão: charset atual (só converter UTF-8) e ausência de U+FFFD (ver Perda silenciosa de acento). Sem elas a conversão troca acento por ? sem avisar.

# Arquivo especifico — NUNCA use o mesmo arquivo como entrada e saida (trunca o arquivo!)
f=arquivo.java
if grep -qF "$(printf '\357\277\275')" "$f"; then
    echo "PERDA: U+FFFD em $f -- restaure via git antes de converter"
else
    case $(file -bi "$f") in *utf-8*)
        t=$(mktemp) && iconv -f UTF-8 -t ISO-8859-1 "$f" > "$t" && cat "$t" > "$f" && rm -f "$t" ;;
    esac
fi

# Todos os .java do projeto (idem para *.xml, *.kt e *.properties)
find . -name "*.java" -exec sh -c '
    grep -qF "$(printf "\357\277\275")" "$1" && { echo "PERDA: U+FFFD em $1"; exit 0; }
    case $(file -bi "$1") in *utf-8*)
        t=$(mktemp) && iconv -f UTF-8 -t ISO-8859-1 "$1" > "$t" && cat "$t" > "$1" && rm -f "$t" ;;
    esac' _ {} \;

Read the full file on GitHub · 235 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. yesterday First seen · 235 lines · 145 tokens per session scan A 7d6658c8f497

Subscribe to this mod's changes

encoding is a skill published in the GitHub repository snk-devcenter/addon-studio (5 stars, last pushed yesterday), licensed MIT. It adds 145 tokens to every session and 2,859 once invoked, about $0.0007 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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