Claude Code mod

cache-clock

Shows how long Claude Code's prompt cache stays warm, how many tokens your next message re-sends, and what it costs now versus after the cache expires.

Context & usage modsValidates on Claude Code 2.1.316 Source

Install

From source
git clone https://github.com/xyzbuilds/cache-clock.git
claude --plugin-dir ./cache-clock/.

The repo has no marketplace file, so load the plugin folder directly with --plugin-dir.

What it can access

Reach
L3Network: network, reads env vars, reads settings, reads mod state, persists state, draws
Sees
classic hooks
Draws in
PromptHintPane
Hooks
session.startturn.stepclassic.SessionStartturn.startturn.completecommand.runui.render

From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.

How Claude Code mods work

  • A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
  • It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
  • Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
  • Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Claude Code docs

Details

Repository
xyzbuilds/cache-clock
Folder
.
Author
XYZ Makes
Type
Context & usage mods
License
MIT
Last updated
6 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is cache-clock?

Shows how long Claude Code's prompt cache stays warm, how many tokens your next message re-sends, and what it costs now versus after the cache expires. It is a mod for Claude Code, from xyzbuilds/cache-clock on GitHub.

What can the cache-clock mod access?

Its widest reach is "network" (network, reads env vars, reads settings, reads mod state, persists state, draws). It sees classic hooks. It draws in PromptHint, Pane. Like any mod, it runs with your permissions.

How do I install cache-clock?

Clone xyzbuilds/cache-clock and start Claude Code with --plugin-dir pointing at the mod's folder (.).

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