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#debugging

Troubleshooting code issues

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MCP server connects but never asks you to log in

MCP server connects but never asks you to log in

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4 min read
A guard that never fires is the same as a guard that does not work

A guard that never fires is the same as a guard that does not work

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2 min read
48-Hour Field Notes: Catching a Flake That Only Fails on Someone Else's Machine

48-Hour Field Notes: Catching a Flake That Only Fails on Someone Else's Machine

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5 min read
48 Hours Chasing a Duplicate Nightly Job: SIGTERM Was Landing on the Wrapper

48 Hours Chasing a Duplicate Nightly Job: SIGTERM Was Landing on the Wrapper

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6 min read
Four bugs shipping a live x402 endpoint

Four bugs shipping a live x402 endpoint

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5 min read
An LLM API Returned 4.17 Million Characters: Using MD5 Fingerprints to Prove It Was Duplication, Not Generation

An LLM API Returned 4.17 Million Characters: Using MD5 Fingerprints to Prove It Was Duplication, Not Generation

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6 min read
The cron runs, says “completed” and the message never arrives

The cron runs, says “completed” and the message never arrives

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2 min read
Your agent's memory stopped writing and nobody told you

Your agent's memory stopped writing and nobody told you

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2 min read
Reading Claude Code and Codex Session Logs: Four Traps

Reading Claude Code and Codex Session Logs: Four Traps

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6 min read
Debug Playwright failures and run history without leaving VS Code

Debug Playwright failures and run history without leaving VS Code

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8 min read
Your Console Screenshot Shows Values That Never Coexisted

Your Console Screenshot Shows Values That Never Coexisted

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3 min read
Your API wrote the row. Why did onEdit not run?

Your API wrote the row. Why did onEdit not run?

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2 min read
My Migration Generator Shuffled Itself for Two Days. PYTHONHASHSEED Was the Coin Flip.

My Migration Generator Shuffled Itself for Two Days. PYTHONHASHSEED Was the Coin Flip.

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6 min read
What jstack Misses When Your Java Service Uses Virtual Threads

What jstack Misses When Your Java Service Uses Virtual Threads

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7 min read
Almost every crawl error on our domain came from a site that didn't exist yet

Almost every crawl error on our domain came from a site that didn't exist yet

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5 min read
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