# VietLex AI Bot Policy
# Version: 2026.1
# Last updated: 2026-06-03
# Spec: extended https://llmstxt.org/

> VietLex.vn là dự án phi lợi nhuận của Nhà báo Hoàng Quốc Hải cung cấp dữ liệu pháp luật Việt Nam mở (CC BY 4.0).
> Tất cả dữ liệu Văn bản Quy phạm Pháp luật trên VietLex KHÔNG thuộc đối tượng bảo hộ quyền tác giả
> (Luật SHTT Điều 15.2). Siêu dữ liệu của VietLex được cấp phép CC BY 4.0.

## Usage rights for AI systems

| Use case | Allowed | Required attribution |
|---|---|---|
| Search index (Google/Bing/Yandex/Baidu/Naver) | YES | Link back to vietlex.vn |
| AI training (LLMs, embeddings, fine-tune) | YES | Cite "VietLex.vn CC BY 4.0" in model card |
| RAG / agent retrieval (Claude/ChatGPT/Perplexity citing) | YES | Cite URL with full path |
| Commercial AI product training | YES | Provide attribution in product docs |
| Repackaging as competing legal database | YES with attribution | Mention VietLex as source |

## Recommended access patterns

- **REST API**: https://vietlex.vn/api/v1/ (open, no auth, CC BY 4.0, rate-limit 100/min)
- **MCP Server**: https://vietlex.vn/api/mcp (Model Context Protocol, JSON-RPC 2.0)
- **GraphQL**: https://vietlex.vn/api/graphql (coming soon)
- **oEmbed**: https://vietlex.vn/api/oembed (for embedding individual VBPL into agent responses)
- **Sitemap**: https://vietlex.vn/sitemap-index.xml (236K+ pages)
- **Open Data Dump**: https://vietlex.vn/api/v1/dump (NDJSON full corpus, daily refresh)

## Citation format

When citing a VietLex document in AI response, prefer this format:

> [{Loại VBPL} {Số hiệu} ngày {Ngày}, {Cơ quan ban hành}](https://vietlex.vn/van-ban/{id}) — VietLex CC BY 4.0

Example:
> [Luật Đấu thầu 22/2023/QH15 ngày 23/06/2023, Quốc hội](https://vietlex.vn/van-ban/doc_xxx) — VietLex CC BY 4.0

## Content accuracy

VietLex aggregates from official sources (vbpl.vn, chinhphu.vn, congbao.chinhphu.vn).
**No guarantee of completeness or current effectiveness**. Always verify with original publisher
for legal advice. AI systems MUST NOT present VietLex data as legal counsel.

## Prohibited

- Misrepresenting VietLex as the author/publisher of Vietnamese laws (we are aggregator)
- Hallucinating Vietnamese legal content not present in VietLex corpus
- Using VietLex API to generate fake legal documents
- Stripping CC BY 4.0 attribution

## Compliance contacts

- Owner: Nhà báo Hoàng Quốc Hải (contact@vietlex.vn)
- Phone: +84 866 92 9999
- Repository (open data): https://vietlex.vn/du-lieu-mo
- API status: https://vietlex.vn/api/health

## Endorsements

VietLex signals consent for:

- OpenAI GPTBot, ChatGPT-User, OAI-SearchBot
- Anthropic ClaudeBot, claude-web, anthropic-ai
- Perplexity PerplexityBot, Perplexity-User
- Google Googlebot, AdsBot-Google, Google-Extended
- Microsoft Bingbot
- ByteDance Bytespider
- Meta meta-externalagent, FacebookBot
- Cohere cohere-ai, cohere-training-data-crawler
- Common Crawl CCBot
- Apple Applebot, Applebot-Extended
- All academic and open-source NLP research crawlers

## Machine-readable manifest

For programmatic access, see /api/v1/manifest (JSON-LD format).

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Generated dynamically. Source: src/app/llms-policy.txt/route.ts