The ~/.claude.json Rollback Is Fixed in v2.1.259. Putting Back What It Erased Is Still Your Job
Concurrent sessions used to silently roll back each other's ~/.claude.json changes. v2.1.259 fixed that, but nothing restores the trust settings and MCP servers you already lost. Here is how I find and rebuild them, with a small key-path diff script.
A One-Letter Typo in settings.json Is Ignored Without a Single Warning
I diffed claude doctor output between a settings.json with misspelled keys and a correct one. There was no difference at all. Here is what actually gets validated, what slips through, and a small check that catches typos before they cost you a day.
Adding ANTHROPIC_DEFAULT_MODEL Changes Nothing While ANTHROPIC_MODEL Is Still Set
ANTHROPIC_DEFAULT_MODEL, added in v2.1.236, is not a replacement for ANTHROPIC_MODEL. Here is how the two differ, plus a Python script that lists every place a model can be pinned.
I Could No Longer Remember What I'd Changed in Auto Mode — Where claude auto-mode reset Fits In
Running nightly automation for weeks, I kept nudging my auto-mode settings one at a time. One morning a small oddity made me realize I could not recall what I had changed. Here is how I rebuilt my configuration around claude auto-mode reset as a known-good baseline, from a solo developer's field notes.
My MCP Timeout Was Being Ignored, and Every Call Died at Exactly 60 Seconds — Reclaiming Per-Server request_timeout_ms
A longer MCP tool call kept dying at exactly 60 seconds, ignoring the wait I had set. The cause: a per-server request_timeout_ms in .mcp.json that was never read, silently falling back to the default. Here is the correct placement after the fix, how to back the value out from a tool's response profile, and how to verify the cutoff yourself — with working code.
When a Broken settings.json Stops Claude Code From Starting — Safe Mode and How to Split Your Config
How to find which config layer is broken when a settings.json syntax error stops Claude Code from starting, recover in minutes, and structure your settings so an automated pipeline can't quietly break itself.
Claude Code MCP Server Won't Start — How to Fix "spawn npx ENOENT" and PATH Issues
You configured an MCP server in Claude Code's settings.json, but it never starts — just "spawn npx ENOENT" or "spawn uvx ENOENT" errors. The culprit is a PATH mismatch between your shell and Claude Code's spawning environment. Here's how to diagnose and fix it.
CLAUDE.md Not Working? A Complete Troubleshooting Guide for Claude Code
Claude Code ignoring your CLAUDE.md settings? This guide covers the most common causes — wrong file location, formatting issues, conflicting configs, and more — with clear fixes for each.
Claude Code Statusline — Displaying Rate Limits and Building Custom Scripts
Learn how to customize Claude Code's statusline to display real-time rate_limits usage. Covers settings.json configuration, custom script creation, and community tools for monitoring your usage.
Claude Code Output Styles Guide — Customize Responses to Maximize Development Efficiency
Master Claude Code's output styles feature. Learn how to use built-in styles, create custom styles, and distribute team-wide configurations through plugins to transform your AI pair programming experience.