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Your LLM's JSON passed the schema. It was still wrong.

Your LLM's JSON passed the schema. It was still wrong.

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9 min read
Your Go Fake Repository Drifts From Postgres. Run One Contract Suite Against Both

Your Go Fake Repository Drifts From Postgres. Run One Contract Suite Against Both

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12 min read
Your XRechnung validator says "valid". Here's what that doesn't mean.

Your XRechnung validator says "valid". Here's what that doesn't mean.

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6 min read
Claude Looked Blocked. My Policy Had Never Fired.

Claude Looked Blocked. My Policy Had Never Fired.

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5 min read
My load test had 1,000 players. None of them were late.

My load test had 1,000 players. None of them were late.

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3 min read
Every typed GraphQL error came back as "Internal server error" because graphql was loaded twice

Every typed GraphQL error came back as "Internal server error" because graphql was loaded twice

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4 min read
4,300 tests, written by an AI: how they were planned, run and enforced

4,300 tests, written by an AI: how they were planned, run and enforced

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3 min read
Reviewing accepted items does not reveal what a filter missed

Reviewing accepted items does not reveal what a filter missed

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2 min read
Why decimal arithmetic can still leave an invoice one cent out

Why decimal arithmetic can still leave an invoice one cent out

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3 min read
Five models built the same app for $0.06 to $0.45. Most of the red was our fault

Five models built the same app for $0.06 to $0.45. Most of the red was our fault

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5 min read
Offline API Debugging When the Client Requires a Cloud Login

Offline API Debugging When the Client Requires a Cloud Login

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4 min read
Handling Cookies and Sessions: A Client's Cookie Jar vs a Spec-Aware Flow

Handling Cookies and Sessions: A Client's Cookie Jar vs a Spec-Aware Flow

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4 min read
A 100% AI Eval Score Is a Red Flag, Not a Win

A 100% AI Eval Score Is a Red Flag, Not a Win

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11 min read
Tests That Use Random Data Without a Seed: Why They Fail on Tuesday

Tests That Use Random Data Without a Seed: Why They Fail on Tuesday

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4 min read
Our Capture Script Filmed the Test Harness, Not Lullwood

Our Capture Script Filmed the Test Harness, Not Lullwood

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4 min read
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