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My prompt-injection fix caught 0 of 20 attacks. The part I almost didn't build caught all of them.

My prompt-injection fix caught 0 of 20 attacks. The part I almost didn't build caught all of them.

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5 min read
How I Built a Regression Suite for My AI Coding Agent's Prompts: 5 Lessons

How I Built a Regression Suite for My AI Coding Agent's Prompts: 5 Lessons

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7 min read
My AI feature was failing 26% of the time. Nothing looked broken.

My AI feature was failing 26% of the time. Nothing looked broken.

Comments 1
4 min read
Your check says PASS. It looked at zero files.

Your check says PASS. It looked at zero files.

Comments 2
4 min read
A Go/No-Go Rubric for Evaluating MCP Servers Before They Touch Production Traffic

A Go/No-Go Rubric for Evaluating MCP Servers Before They Touch Production Traffic

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5 min read
trelix v3.2.2 to v3.3.8: A GitHub App Already Hardened and Running in Production, and a Connector That Never Touches a Pixel

trelix v3.2.2 to v3.3.8: A GitHub App Already Hardened and Running in Production, and a Connector That Never Touches a Pixel

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18 min read
Your Test Suite Is Slow Because It Tests Postgres

Your Test Suite Is Slow Because It Tests Postgres

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3 min read
Almost every A/B testing vendor refuses to publish a price. Here are ours

Almost every A/B testing vendor refuses to publish a price. Here are ours

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3 min read
How long should an A/B test run? Not a number of weeks

How long should an A/B test run? Not a number of weeks

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4 min read
2.2 ms, 19.9 ms, 529 ms: benchmarking an A/B testing runtime and publishing the caveats

2.2 ms, 19.9 ms, 529 ms: benchmarking an A/B testing runtime and publishing the caveats

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4 min read
Why our A/B testing tool refuses to call a winner

Why our A/B testing tool refuses to call a winner

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4 min read
Testers Community Alternative: PeerPlay Comparison

Testers Community Alternative: PeerPlay Comparison

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3 min read
Two claim checkers are better than one: putting Jev in my routing stack

Two claim checkers are better than one: putting Jev in my routing stack

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4 min read
Building an AI-Directed Browser Roguelite with a Deterministic Baseline

Building an AI-Directed Browser Roguelite with a Deterministic Baseline

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2 min read
Verify an Indexer Can Recover from a Chain Reorganization

Verify an Indexer Can Recover from a Chain Reorganization

Comments 1
16 min read
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