An Empty Variable and rm -rf: How Claude Code's Auto Mode Preflight Saved My Late-Night Cleanup
An empty variable nearly turned rm -rf into a wide delete. Why set -u lets an empty string pass, and the cleanup script I rebuilt with dry run as the default.
Which Nightly Job Wrote This Commit? Threading a Correlation Key Through Claude Code's Readable Session Names
When you run unattended nightly jobs across several repositories, you lose track of which session produced which commit. Here is how I redesigned Claude Code's readable session names into a correlation key that ties commits, logs, and sessions into a single thread — with real numbers.
Fixing Blurry Wallpapers on New iPhones with Claude Code: Safely Growing a Per-Device Resolution Map
Why wallpapers go blurry or letterboxed on brand-new iPhones, and how to collapse scattered device branches into a single source of truth you can extend in one line — walked through as a real Claude Code refactor with before/after code.
Measure Streaming CPU and Dropped Chunks to Stabilize Long Batch Jobs
You start an overnight batch, and by morning only half of it finished. The culprits were CPU pinned during streaming and a quiet connection drop. Here is a monitor wrapper that measures stream CPU and throughput, and resumes from interruptions.
Reach a Remote MCP Server in a Single API Request: Implementing the Messages API MCP Connector
How to call a remote MCP server's tools using only the Messages API's mcp_servers and mcp_toolset—no local MCP client. Covers allowlist/denylist design, response handling, and the pitfalls to avoid before unattended production use.
Grounding Claude on Your Own Knowledge Base with search_result Blocks
How to stop your own RAG setup from losing track of which article it cited, using Claude's search_result content block and structured citations — with real numbers from running it across four sites.
Two Days Into the Billing Change: How Far My Headless Costs Drifted From the Estimate
On June 15 the billing change moved headless execution onto separate monthly credits. Two days in, I broke down cost per pipeline stage and found one stage running at roughly double my estimate. Here is how I measured it, and why I moved one stage back to my subscription.
Clearing Crashlytics 'Missing dSYM' Warnings with Claude Code: A Field Memo
Right after moving Firebase to SPM, my Crashlytics reports stopped symbolicating and showed raw addresses. Here is how I narrowed down the Missing dSYM cause with Claude Code and rebuilt an upload path that does not break again.
A Month of Reading App Store Connect Sales and Trends Weekly with Claude in Chrome
Notes from one month of switching App Store Connect Sales and Trends from a monthly glance to a weekly review, with Claude in Chrome walking the dashboards and four apps worth of numbers showing me what I had been missing.
Hand Claude Code a One-Line Done-When and Let It Run — Inside My Four-Site Article Pipeline
How I built an E2E-driven article pipeline that runs Claude Code autonomously across four AI blogs, publishing 16 articles per day. The trick is collapsing the done-when into a single Python gate and capping retries at five.
Three Weeks of Letting Claude in Chrome Tune My AdMob Mediation Priorities
I let Claude in Chrome handle the reordering of AdMob mediation priorities for three weeks. Here is how I set the threshold, the three prompt changes that actually mattered, the numbers, and the parts I deliberately kept under human control.
Folding AdMob and Crashlytics into One Morning Check via Cowork Scheduled Tasks — Two-Week Notes
I had been checking AdMob fill rates and Crashlytics surges in two separate dashboards each morning. I folded them into a single Cowork scheduled task. Here are my two-week notes, with the numbers and the friction I ran into.