Peter Whyte

Author: Peter Whyte

  • CLAUDE.md: Project Memory for Claude Code

    Claude Code forgets everything between sessions unless you write it down. Where CLAUDE.md lives, what to put in it, /init, CLAUDE.local.md, .claude/rules/, and the auto memory Claude keeps for itself.

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  • Claude Code Permissions: Allow and Deny Rules in settings.json

    Stop answering the same permission prompt. The allow, ask and deny lists in settings.json, the rule syntax with the space before the *, PowerShell rules, protecting .env, the 3 files the rules live in, and the modes behind Shift+Tab.

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  • Claude Code Hooks: Run a Check After Every Edit

    A hook is a command Claude Code runs itself at a fixed point, every time, whatever the model decides. A PostToolUse hook on Windows that parses every .ps1 Claude writes and hands the errors straight back, plus the notification and block-the-file hooks.

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  • Add an MCP Server to Claude Code

    claude mcp add for a remote HTTP server and a local stdio one, the — separator, the 3 scopes and where each is stored, .mcp.json for the team, /mcp to check status and sign in, and the permission rule that stops the “use this tool?” prompts.

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  • Resume a Claude Code Session With –continue and –resume

    Closed the terminal mid-task? claude –continue picks up the last session in this folder, claude –resume opens the picker or a named session, /rename makes sessions findable, /branch tries a different approach, and /clear versus /compact.

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  • Claude Code Subagents: Keep the Noise Out of Your Main Session

    A subagent runs a task in its own context window and sends back only the summary. The built-in Explore and Plan agents, writing your own in .claude/agents/, limiting its tools and model, invoking one with @, and running a whole session as an agent.

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  • Custom Slash Commands in Claude Code With Skills

    Turn the prompt you paste every day into /name. A skill is a folder with a SKILL.md: where it lives, the frontmatter that controls who can invoke it, $ARGUMENTS, pulling live command output in with !`cmd`, and the PowerShell setting for Windows.

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  • Plan Mode in Claude Code: Read First, Edit After

    Plan mode lets Claude read the codebase and write a plan without touching a file until you approve it. Shift+Tab, /plan for one prompt, –permission-mode plan, the 3 approval options, editing the plan with Ctrl+G, and making it the default for a project.

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  • Run Claude Code From a PowerShell Script With claude -p

    claude -p runs one prompt and exits, which makes it a command you can put in a script. Piping a log in, getting JSON out and reading it with ConvertFrom-Json, allowing tools without prompts, –bare for a clean run, continuing a conversation, and the quoting that trips PowerShell.

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