Writing since 2018 San Francisco Bay Area

Notes on building things, & the life around it.

I’m Tony — a software engineer at LinkedIn, plus father, husband, and cat owner. I write about engineering, AI tools, product craft, family life, travel, and whatever survives the useful/interesting filter.

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01Tools

Interactive
Personal workflow Shareable

Share the tools behind your work.

Create a clear card of the AI tools you actually use, what each one does, and how the pieces fit together.

Create your card
  • Start from a familiar workflow template.
  • Add the tools and roles that fit your process.
  • Copy the card or share a link with your team.
Create a shareable AI workflow
Experimentation No data upload

Did variant B actually win?

Compare two conversion rates and focus on the Treatment minus Control delta, not just the overlap between two separate charts.

Four inputs
  • Enter users and conversions for each group.
  • See absolute lift, relative lift, and p-value.
  • Read the confidence interval for the delta.
Compare an A/B test result
OAuth Runs locally

Generate a PKCE verifier pair.

Create a code verifier and S256 code challenge for OAuth 2.0 flows, without sending secrets to a server.

Two values
  • Generate a fresh, URL-safe code verifier.
  • Derive its SHA-256 code challenge in the browser.
  • Copy the challenge into a manual OAuth request.
Open the PKCE generator

02Recent writing

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My second brain setup
Essay New

My second brain setup

How I set up a private Markdown-first second brain with semantic search, AI agents, raw capture, and quiet automation.