Frontend I18n

What it does

When your agent uses it

• Edits UI strings — labels
• Reviewing a diff that contains user-facing text
• Backend strings
• Code identifiers

Example prompts

• “/frontend-i18n”

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

1. 1Every user-facing string goes through t(...) — never hardcoded JSX text for labels, buttons, tooltips, modals, toasts, errors…
2. 2Every new key is added to ALL locale files in the same PR (en.json, de.json, es.json, fr.json, ja.json, pt.json, zh-Hans.json)…

What it can do on your machine

Read from SKILL.md and the folder at commit 504c02f. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript, json and bash).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Frontend I18n loads about 1k tokens when it runs. Until then it costs about 122 tokens; SKILL.md has 411 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~122

When it runs · the whole SKILL.md, loaded when a task matches

~1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from langflow-ai/langflow at commit 504c02f, republished under its MIT licence (© langflow-ai). 411 words, ~1,007 tokens.

name

frontend-i18n

description

Add, change, or review user-facing text in the Langflow frontend using the i18n system (i18next / react-i18next). Use whenever a change adds or edits UI strings — labels, buttons, tooltips, modals, toasts, error messages, empty states — or when reviewing a diff that contains user-facing text. Every user-facing string must go through the translation system and every new key must exist in ALL locale files. Do NOT use for backend strings, log messages, or code identifiers.

import { useTranslation } from "react-i18next";

const { t } = useTranslation();

<span>{t("deleteModal.title")}</span>
<p>{t("errors.fileTooLarge", { maxSizeMB: "10MB" })}</p>

"errors.fileTooLarge": "The file size is too large. Please select a file smaller than {{maxSizeMB}}."

for f in src/frontend/src/locales/*.json; do grep -L '"my.new.key"' "$f"; done

© langflow-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/frontend-i18n of langflow-ai/langflow.

Open the folder on GitHubat commit 504c02f