Arthur031221

NeuroAI researcher and open-source engineer | fMRI decoding, scientific computing, developer tools

Joined on Sep 30, 2026

Arthur031221

Oct 11

Checking a furniture turning route in the browser

#showdev #opensource #ai

2 min read

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Arthur031221

Oct 10

Why agents draw bad maps, and a checklist that catches them

#showdev #javascript #opensource #dataviz

2 min read

Arthur031221

Oct 10

Replaying earthquakes in the browser, and checking the waves against 3,933 real picks

#showdev #javascript #opensource #webdev

2 min read

Arthur031221

Oct 10

A passport photo guide that runs in your browser

#javascript #webdev #privacy #mediapipe

2 min read

Arthur031221

Oct 9

Where does the sun land in my room? A browser tool with a checked sun model

#showdev #javascript #opensource #webdev

2 min read

Arthur031221

Oct 9

A day planner where one drag re-flows the whole day

#javascript #productivity #webdev #opensource

2 min read

Arthur031221

Oct 9

Making a photo flow with one fragment shader and a GIF writer

#showdev #webgl #javascript #opensource

2 min read

Arthur031221

Oct 9

SQLite FTS5 Writes: Bulk Build or Trigger Sync?

#sqlite #python #performance #database

2 min read

Arthur031221

Oct 9

I turned a GitHub star count into a sky you can drag into shape

#showdev #opensource #ai

2 min read

Arthur031221

Oct 8

Sending trip places as a stamp sheet, with the whole story in the URL fragment

#javascript #canvas #webdev #opensource

2 min read

Arthur031221

Oct 8

Weaving a chat into cloth without reading it

#javascript #privacy #opensource #dataviz

2 min read

Arthur031221

Oct 8

Splitting a dinner bill by who ate what, with the whole bill in the URL

#javascript #webdev #opensource #tutorial

2 min read

Arthur031221

Oct 8

Search the words inside your screenshots without uploading them

#webdev #javascript #ocr #privacy

2 min read

Arthur031221

Oct 7

Printing dark mode notes without the black pages

#pdf #javascript #opensource #privacy

2 min read

Arthur031221

Oct 7

A small CLI for finding repeated calls in saved agent sessions

#python #cli #opensource #devtools

2 min read

Arthur031221

Oct 7

Keeping the original beside a shorter reply

#showdev #opensource #ai

2 min read

Arthur031221

Oct 5

I built a Mandarin to English caption pipeline

#showdev #opensource #ai

2 min read

Arthur031221

Oct 5

Squelchy: a small live wrapper for noisy commands

#cli #opensource #node #terminal

2 min read

Arthur031221

Oct 5

Mapping npm package file bytes

#showdev #opensource #ai

2 min read

Arthur031221

Oct 5

Comparing MCP tool definitions from saved tools/list responses

#mcp #node #opensource #cli

2 min read

Arthur031221

Oct 4

Testing the tool call after the HTTP success

#showdev #opensource #ai

2 min read

Arthur031221

Oct 4

A local receipt for session evidence and the current Git diff

#node #git #cli #devtools

2 min read

Arthur031221

Oct 4

Checking a React Native bundle entry inside an APK or AAB

#showdev #opensource #ai

2 min read

Arthur031221

Oct 4

Keeping GitHub Actions reruns in an attempt ledger

#showdev #opensource #ai

2 min read

Arthur031221

Oct 4

Comparing GitHub HTTPS ref discovery with HTTP/1.1

#showdev #opensource #ai

2 min read

Arthur031221

Oct 3

When a preview port belongs to the wrong Git worktree

#showdev #opensource #ai

2 min read

Arthur031221

Oct 3

Check Markdown examples before someone copies them

#node #markdown #cli #documentation

2 min read

Arthur031221

Oct 3

Finding fixed Git object ID assumptions before SHA-256 exposes them

#showdev #opensource #ai

2 min read

Arthur031221

Oct 3

Checking a Pandas pipeline before moving it to Polars

#showdev #opensource #ai

2 min read

Arthur031221

Oct 3

Why a missing JavaScript file can stay missing after you deploy it

#showdev #opensource #ai

2 min read

Arthur031221

Oct 2

Reading a paper with its source page beside the answer

#showdev #opensource #ai

2 min read

Arthur031221

Oct 2

Why Node rejects your package import, and a CLI that tells you

#showdev #opensource #ai

2 min read

Arthur031221

Oct 2

Why an API works in curl but fails at the browser preflight

#showdev #opensource #ai

2 min read

Arthur031221

Oct 2

Group your failed GitHub Actions runs by the error they share

#github #devops #cli #python

2 min read

Arthur031221

Oct 2

Finding the second copy of React that npm ls cannot see

#react #javascript #npm #debugging

2 min read

Arthur031221

Oct 1

Why your .env.local change did nothing in Next.js or Vite

#nextjs #vite #javascript #webdev

2 min read

Arthur031221

Oct 1

cliffhanger, a Stop hook that keeps Claude Code from quitting early

#claudecode #opensource #ai #productivity

2 min read

Arthur031221

Oct 1

snipmd, an offline Mathpix Snip alternative for macOS

#macos #opensource #python #machinelearning

2 min read

Arthur031221

Oct 1

I tested my Docling JSON checker against real documents and found my own bug

#python #opensource #rag #docling

2 min read

Arthur031221

Oct 1

cardsmith: offline flashcards from your own PDFs, checked against the source

#showdev #opensource #ai

2 min read

Arthur031221

Sep 30

Ollama silently truncated my context window. A scanner for local LLM setups

#showdev #opensource #ai

2 min read

Arthur031221

Sep 30

Eleven model snapshots retire on October 23. Find them in your repo before your users do

#showdev #opensource #ai

2 min read

Arthur031221

Sep 30

Your coding agent may have saved your API keys in plain text. Here is how to find and remove them

#security #ai #opensource #go

2 min read

1 Week Community Wellness Streak

Writing Debut

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