The Fake ID Crisis: Understanding the eMudhra TLS Certificate Issue
We all know the drill: before you type your credit card number or bank password into a website, you look for that little padlock icon next…
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Small, dependable tools for the everyday bits of software engineering—plus notes from the work behind them.
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01 — 03 TOOLKIT
The everyday toolkit
Get back to the
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01 / FORMAT & VALIDATEJSON formatter
Make structure readable, catch syntax errors, and get a clean result.
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02 / ENCODE & DECODEBase64 converter
Move between text and Base64 without leaving your browser.
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03 / INSPECTJWT viewer
Read token headers and claims. Decoded data is not signature verification.
Open viewer →MORE BROWSER UTILITIES
Small tools for the rest of the workflow.
*/SCHEDULES / CRON
Cron expression helper
Validate cron syntax and preview upcoming runs.
Open tool →±TEXT / CODE DIFFText diff checker
Compare two versions side by side.
Open tool →.*PATTERNS / JAVASCRIPTRegex tester
See live matches, captures, and quick pattern help.
Open tool →SQLSQL / FORMATSQL formatter
Make SQL queries easier to read and review.
Open tool →◷TIME / UNIXUnix timestamp converter
Convert timestamps, dates, and milliseconds.
Open tool →%URL / QUERY STRINGSURL encoder / decoder
Encode or decode URL components and complete URLs.
Open tool →#IDENTIFIERS / UUID V4 + V7UUID generator
Generate random v4 or time-ordered v7 identifiers.
Open tool →Y↔JYAML / JSON CONVERSIONYAML ↔ JSON converter
Convert common YAML and JSON structures.
Open tool →{…}JSON / CODE MODELSJSON to code model generator
Generate TypeScript, Kotlin, Java, Python, Go, or C# models from JSON.
Open tool →#CRYPTOGRAPHIC HASHESHash generator
Create SHA-256, SHA-384, or SHA-512 text digests.
Open tool →M↓MARKDOWN / PREVIEWMarkdown previewer
Preview headings, links, lists, and code.
Open tool →◉COLOR / HEX · RGB · HSLColor converter
Convert color values and preview swatches.
Open tool →H↔HTML / ENTITIESHTML entity encoder / decoder
Escape or unescape HTML text safely.
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Notes worth
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AI & Agents
Stop Paying the Generalist Tax: How Narrow Grounding Pushes LLM Agents into the Top 2%.
Moving from generalist prompts to grounded, single-purpose agents with the Agents SDK.
Read article →Architecture
Microservices Aren’t Dead — They Just Learned to Think
A monolithic LLM tries to be an entire enterprise; a Multi-Agent System acts like one.
Read article →AI & Agents
Why Your AI Agents Are Leaking Secrets (And How to Stop It)
You scoped your agent tools. You applied least privilege. You thought your internal DB was isolated. Yet, your lower-privilege research…
Read article →From the engineering notebook
Useful notes from
the work itself.
AI agents, security, architecture, and the tools that make a developer's day a little smoother.
Visit the blog →32hands-on posts
2015first notes published
A growing archive of examples, experiments, and lessons learned.