How to fix Cursor's Terminal sandbox error on Linux (AppArmor)
Cursor's terminal sandbox fails on Ubuntu 24.04+, Fedora, and Arch because of an AppArmor namespace restriction -- here's the two-command fix and why chmod 4755 makes it worse.
Topic
AI Coding
Cursor, Claude Code, Copilot, Aider
Fix Claude Code MCP "Failed to Connect" (Bun Runtime Bug)
curl reaches your HTTP MCP server fine, but Claude Code's CLI still says 'Failed to connect' -- here's why the Bun runtime is the actual point of failure, and three ways around it.
Cursor Override OpenAI Base URL Breaks Anthropic Key: Fix
One Cursor settings toggle causes three different Anthropic API key errors. Here is the exact fix and why it can silently undo itself.
How to fix the Cursor Provider Error that lasts for days
Most persistent Cursor Provider Errors aren't a network problem — they're caused by a conflicting MCP server. Here's the fix sequence that actually works.
How to fix the Cursor Connection Error when the agent stops working
The same 'Connection failed' error hides four different causes. Here's how to diagnose which one is hitting you and apply the right fix.
Fix "agent execution provider did not respond in time" in Cursor
Cursor agent mode blocked by 'The agent execution provider did not respond in time'? Reload Window first, then escalate to Restart Extension Host, CachedData clear, or a clean reinstall if the log shows a hash mismatch.
How to fix Claude Code MCP "spawn npx ENOENT" (and "spawn uv ENOENT") on Windows
On Windows, Node's spawn can't find .cmd shims or user-PATH tools like uv. Two fixes: the cmd /c wrapper and the full binary path - plus the plugin-cache gotcha that wipes the patch on update.
Claude Code and Claude Desktop MCP config file: location and format (Windows/Mac/Linux)
Two tools, two config files. Claude Desktop reads claude_desktop_config.json; Claude Code reads ~/.claude.json -- not ~/.claude/settings.json, which many guides incorrectly recommend.
Fix 'claude mcp add: unknown option --command' in the Claude Code CLI
No --command flag exists. Use -- to pass the command: claude mcp add myserver -- npx -y server. All options go before the server name.
Cursor: fix 'Waiting for extension host' hang
The 'Waiting for extension host' hang blocks Cursor's AI agent and extensions. Four fixes in order of effort: restart the host, disable extensions, wipe the state database, or update Cursor.