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48-Hour Field Notes: curl Looked Instant. Python Paid a Handshake on Every Call.

48-Hour Field Notes: curl Looked Instant. Python Paid a Handshake on Every Call.

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8 min read
I Sent 50 Emails After 250 OK. 24% Still Bounced.

I Sent 50 Emails After 250 OK. 24% Still Bounced.

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12 min read
Write NUnit tests once. Run them on Windows and a Crestron Home processor.

Write NUnit tests once. Run them on Windows and a Crestron Home processor.

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7 min read
Before You Ship Your Python AI Agent: Testing, Observability, and the $0 Stack

Before You Ship Your Python AI Agent: Testing, Observability, and the $0 Stack

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6 min read
Your AI had questions. It answered them in the code.

Your AI had questions. It answered them in the code.

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3 min read
Test live messages with a WebSocket tester in 2026

Test live messages with a WebSocket tester in 2026

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7 min read
Four things that cost us money while automating job applications

Four things that cost us money while automating job applications

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3 min read
Incident Severity Does Not Belong on Free Inference

Incident Severity Does Not Belong on Free Inference

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6 min read
Validate Poland's e-invoices offline against the official XSD, then make your validator fail on purpose

Validate Poland's e-invoices offline against the official XSD, then make your validator fail on purpose

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5 min read
My check said "all 17 articles". There were 18.

My check said "all 17 articles". There were 18.

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3 min read
From Quantity to Quality: A Risk-Based Approach to AI-Assisted QA at Scale

From Quantity to Quality: A Risk-Based Approach to AI-Assisted QA at Scale

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6 min read
Replay Fixtures Separate Agent Scores From API Weather

Replay Fixtures Separate Agent Scores From API Weather

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7 min read
Confirmed vs. Potential Vulnerabilities: How to Act on Each Without Creating Alert Fatigue

Confirmed vs. Potential Vulnerabilities: How to Act on Each Without Creating Alert Fatigue

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5 min read
text === '' is the wrong way to check whether Unicode normalization ate your data

text === '' is the wrong way to check whether Unicode normalization ate your data

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4 min read
Don't Rehearse a Bill on Gift Capacity

Don't Rehearse a Bill on Gift Capacity

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6 min read
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