> For the complete documentation index, see [llms.txt](https://blogs.nhquydev.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blogs.nhquydev.net/general-knowledge/ai/api-services.md).

# API Services

- [OpenSpec – Chấm dứt "Vibe Coding", đưa AI Coding vào quy trình chuyên nghiệp](https://blogs.nhquydev.net/general-knowledge/ai/api-services/openspec-cham-dut-vibe-coding-dua-ai-coding-vao-quy-trinh-chuyen-nghiep.md): OpenSpec là framework Spec-Driven Development (SDD) dành cho AI Coding Assistant. Giúp chuẩn hóa quy trình, giảm Vibe Coding, lưu spec trong Git.
- [GitHub Spec Kit — Khung cảnh hỗ trợ Spec-Driven Development với AI Coding Agent](https://blogs.nhquydev.net/general-knowledge/ai/api-services/github-spec-kit-khung-canh-ho-tro-spec-driven-development.md): GitHub Spec Kit là toolkit mã nguồn mở hỗ trợ Spec-Driven Development (SDD) với AI Coding Agent. Định nghĩa spec trước, code sau, giảm Vibe Coding.
- [Danh sách Chat AI miễn phí](https://blogs.nhquydev.net/general-knowledge/ai/api-services/danh-sach-chat-ai-mien-phi.md)