Best Claude Code hooks

When context usage reaches a threshold you set, write a handover note first, then compact automatically, and hand the note to whoever continues: this conversation after compaction, and the next session in the same project.

A board for OpenSpec spec-driven development in Claude Code. Three things in one pane, one band line and the status line:

Paints Markdown onto Claude Code's prompt box as you type: fenced code becomes a syntax-highlighted card (even before you close the fence), and inline code, bold, italic, lists, task lists, quotes, tables, links and headings are styled. Paint only, your text is never changed.

Holds a risky shell command before Claude runs it, works out what it would change, and opens a pane with **Proceed** and **Cancel**. Cancel refuses the command and tells Claude why, so it knows nothing ran.

A Claude Code plugin that scans every text entering a conversation — prompts, tool results, subagent rows — and replaces detected API keys, cloud credentials and other secrets with meaningful placeholders before they reach the model.

Live plan progress bars above the Claude Code prompt: stages, steps, a pixel fill and soft sounds for decision, error and done

Keeps the prompt cache from lapsing while you are away from the keyboard.

Claude Code mod that shows a countdown in the prompt footer beside the model for how long the main thread's prompt cache stays warm.

Side-effects ledger (/ledger) with a hold on production SQL writes, and a waiting-on tracker for background work

Holds gcloud and gsutil commands that would create, change or delete cloud resources, shows the account, project, location and the current state of the targets, and asks you to Proceed or Cancel.

A Claude Code mod that makes Claude ask before it touches your database migrations.

# Claude Code mods for running a lot of sessions at once