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#debugging

Troubleshooting code issues

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Two systems hit the same usage limit. Only one of them was spending it.

Two systems hit the same usage limit. Only one of them was spending it.

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4 min read
Empty Arrays Passed Validation, So the Bug Shipped

Empty Arrays Passed Validation, So the Bug Shipped

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4 min read
The Prompt Was the Bottleneck, Not the Model

The Prompt Was the Bottleneck, Not the Model

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4 min read
Python's mutable default argument bug, run one call at a time

Python's mutable default argument bug, run one call at a time

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4 min read
The Health Check Said 200 While the Model Said 401: Debugging a Silent Endpoint Fallback

The Health Check Said 200 While the Model Said 401: Debugging a Silent Endpoint Fallback

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9 min read
Keep an older image decode from replacing the latest preview

Keep an older image decode from replacing the latest preview

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2 min read
48-Hour Field Notes: I Built a Boot Beacon Because My Free Server Never Said Goodbye

48-Hour Field Notes: I Built a Boot Beacon Because My Free Server Never Said Goodbye

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6 min read
Cannot Read Properties of Undefined (Reading 'bind'): The Fix

Cannot Read Properties of Undefined (Reading 'bind'): The Fix

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10 min read
Deterministic Replay: Giving AI Agents Time-Travel APIs to Fix Distributed Bugs

Deterministic Replay: Giving AI Agents Time-Travel APIs to Fix Distributed Bugs

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1 min read
Three times in one week, a refusal to answer got recorded as an answer

Three times in one week, a refusal to answer got recorded as an answer

Comments 2
6 min read
tcpdump and dig Examples You'll Actually Paste Into a Runbook

tcpdump and dig Examples You'll Actually Paste Into a Runbook

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Comments 2
2 min read
Your Agent Trace Is Too Big: Budget Bytes per Span

Your Agent Trace Is Too Big: Budget Bytes per Span

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5 min read
We audited our own AI agent harness: 9 failure modes and the fixes

We audited our own AI agent harness: 9 failure modes and the fixes

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11 min read
The 200 Came Back Empty and the Job Still Ran

The 200 Came Back Empty and the Job Still Ran

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5 min read
My agent wasn’t forgetting things — I just couldn’t see what it decided 3 steps earlier

My agent wasn’t forgetting things — I just couldn’t see what it decided 3 steps earlier

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6 min read
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