boom-vitt/claude-thai-skills

This project is a pack of 12 add-ons for Claude Code, the coding assistant tool from Anthropic, that teach it to handle Thai-language tasks correctly. The author starts from a simple observation: Claude already speaks Thai, but when you ask it to write a Thai tax invoice, a citizen ID checker, or a Songkran greeting card, it makes the kind of mistakes only a non-Thai person would make. The repo is a fix for that, distributed as a Claude Code plugin and licensed under MIT. The README lists ten concrete examples of those mistakes. Claude often writes years as 2025 when a Thai document needs the Buddhist year 2568. It fills government forms with everyday wording instead of the formal style the bureaucracy expects. It produces invoices that forget the 7 percent VAT line. It checks a 13 digit Thai national ID with a plain regex and skips the real checksum. It treats the pronoun "you" as one word when Thai has several depending on who you are talking to. It writes PDPA privacy notices that read like translated GDPR templates. Each of those ten gaps maps to one of the skills in the pack. The 12 skills are grouped by purpose. Writing and communication skills cover translation, social media captions for Thai platforms like Pantip and TikTok, and customer service replies for LINE OA, Shopee, and Lazada. Document skills handle Thai resumes, government forms, and festival greeting cards. Accounting and law skills cover Thai invoices, including a Python script that computes VAT and withholding tax with the Decimal type, and PDPA privacy notices. Data and format skills cover Thai date conversion, citizen ID validation with PromptPay QR generation, address parsing across the 77 provinces, and Thai text processing with PyThaiNLP. Installation is two commands inside Claude Code: add the marketplace, then install either the full pack or a single skill. There is also a clone and shell script path. The four skills that include real code, such as ID validation and date formatting, ship with self tests run by a CI workflow on every push.