Hacker News: letientai299

Show HN: Dirsv – dir browser, battery packed Markdown previewers

letientai299 — Wed, 25 Mar 2026 08:41:20 +0000

This is my 2nd time sharing this tool. It is a local directory browser with live reload. Single Go binary, embedded web UI.

IMO, it is a better markserv [0] that supports more features I needed for my workflow with markdown and general dir browsing:

- Math heavy note. - Tech design docs with heavy mermaid diagrams. - Code file, images, preview. Last time I used markserv, when browsing into an unsupported text files, it is downloaded. dirsv will render the file with syntax highlighting.

I also built the companion nvim for this: https://github.com/letientai299/dirsv.nvim

Compare to my last Show HN sharing, many bugs was fixed, and a few changes was made:

- Sync scroll, cursorline and visual selection between nvim plugin can the previewer. - Change default port ranges to 3579+, to avoid conflict with many other tools that like to use 8xxx range.

Disclaimer: this was built with claude code, and, I do code review seriously to make sure I can still work on it without any AI tools.

[0]: https://github.com/markserv/markserv

Comments URL: https://news.ycombinator.com/item?id=47514824

Points: 2

# Comments: 0

Show HN: Dirsv – live reload server for dir browsing, GFM, and more filetypes

letientai299 — Wed, 04 Mar 2026 09:21:38 +0000

I write a lot of markdown in Neovim — learning notes with KaTeX math, design docs with Mermaid/D2 diagrams, cross ... I also browse repos offline and preview static sites. No single tool handled all of that with live reload. So I built dirsv.

It's a single Go binary with an embedded web UI, use fsnotify for watching filesystem, and send WebSocket events to reload the browser page.

I also build dirsv.nvim that auto start dirsv at repo root (or current working dir if it's not a git repo), then open right URL for current buffer in the browser.

Disclosure: majority of the code was written by claude, incrementally, while I'm doing code review, testing and designing.

Comments URL: https://news.ycombinator.com/item?id=47245036

Points: 1

# Comments: 0

Show HN: Agent-Rules – Opinionated Rules and Workflows for Claude Code

letientai299 — Fri, 27 Feb 2026 07:20:25 +0000

Last year I was skeptical about coding AI. Now, they can produce much better quality output, so I started using them more often, specifically claude code. During this transition, I felt unsatisfied with the prompting UX:

- Outputs are either noisy, or lacking important details.

- Trade-offs aren't fully listed when the agents provide options.

- Limited context length, and the inability to share context between sessions means I often have to repeat the same info multiple times when iterating through a problem.

So, I defined some custom workflows that make the agent persist the context to markdown files, where I can thoroughly review, answer inline, cross-reference, or delegate another agent for more analysis. The agent and I keep iterating the discussion until we resolve every blocker. This builds an auditable trail of discussions and decision making.

I believe these problems and preferences aren't only mine. There are likely some existing tools or skills that provide similar mechanics (e.g. Entire.io). However, I avoided them due to security concerns with third-party plugins, and because I dislike the prompting UX. Skills, if relevant, would just add more slash commands. My customized workflows are about discussions-like UX.

The repo contains:

- Opinionated mechanics to group rules by layers: global + cross machine, global + machine specific, project + shared, and project + personal.

- A layout to split language/tech specific rules into small files. Agents read only what's relevant to the current task, so they don't waste context.

- Some general practices that I find useful.

Consider this repo as a template or reference implementation which you can build upon. More details in the project readme. Enjoy.

Comments URL: https://news.ycombinator.com/item?id=47177580

Points: 1

# Comments: 0

New comment by letientai299 in "Show HN: CLI tool to convert Markdown to rich HTML clipboard content"

letientai299 — Thu, 05 Feb 2026 15:22:19 +0000

Please read the README. The tool turns Markdown into NSPasteboard on Mac, or CF_HTML on Windows, so that when you press Cmd/Ctrl-P onto supported applications (Teams, Word, Google Docs), you get something similar to how Github would display the Markdown in the browser.

New comment by letientai299 in "Show HN: Mmdr – 1000x faster Mermaid rendering in pure Rust (no browser)"

letientai299 — Thu, 05 Feb 2026 14:16:34 +0000

Cool. I’ve just publish a tool md2cb to convert markdown to clipboard content (https://news.ycombinator.com/item?id=46896623) using mmdr internally. Totally unaware of this being posted just yesterday.

New comment by letientai299 in "Show HN: CLI tool to convert Markdown to rich HTML clipboard content"

letientai299 — Thu, 05 Feb 2026 13:33:06 +0000

I need the rendered content, not the plain text HTML. As mentioned in the README, I used pandoc in a previous version of the tool, but its output isn’t good looking for my use case.

Show HN: CLI tool to convert Markdown to rich HTML clipboard content

letientai299 — Thu, 05 Feb 2026 07:05:31 +0000

At work I need to use Teams. It supports a few Markdown features, but the editing experience for long message isn't smooth. So, I often write in nvim, preview it in the browser and then copy paste to Teams. This tool help me get rid of the review and copy step.

Build with Rust + Claude Code. Tested on Windows and Mac, should works on Ubuntu as well.

Caveats: it's still up to the pasted app to handle the HTML clipboard content.

Comments URL: https://news.ycombinator.com/item?id=46896623

Points: 12

# Comments: 7

Coleman–Liau Readability Index

letientai299 — Wed, 04 Feb 2026 09:43:06 +0000

Article URL: https://en.wikipedia.org/wiki/Coleman%E2%80%93Liau_index

Comments URL: https://news.ycombinator.com/item?id=46883690

Points: 1

# Comments: 0

PFX – How Not to Design a Crypto Protocol/Standard

letientai299 — Wed, 30 Oct 2024 05:43:53 +0000

Article URL: https://www.cs.auckland.ac.nz/~pgut001/pubs/pfx.html

Comments URL: https://news.ycombinator.com/item?id=41992179

Points: 2

# Comments: 1

New comment by letientai299 in "Ask HN: Who wants to be hired? (June 2024)"

letientai299 — Mon, 03 Jun 2024 20:54:46 +0000

    Location: Ho Chi Minh City, Vietnam
    Remote: Yes
    Willing to relocate: No
    Technologies: Golang, Java, C++, ReactJS, PostgreSQL, MySQL, Redis, K8S, GKE, CI/CD, Distributed System.
    Résumé/CV: https://letientai.io/cv
    Email: (find in CV)

I'm 10+ YoE SWE, who built high-scale performant microservices, core libraries, and developer tools at Shopee (the E-commerce leader in Southeast Asia). Able to learn and be productive quickly with whatever stack you use. My last project at Shopee was a framework that abstracts infrastructure components (DB, cache, mq, ...), enabling developers to build new services quickly focusing on only the business logic. It's similar to Spring Boot but for Golang. It's not OSS, unfortunately.

I'm looking for either a full-time or contract remote position.