Claude Code Coffee

claude-code-coffee

[](https://opensource.org/licenses/MIT) [](https://github.com/anthropics/claude-code)

A [Claude Code](https://github.com/anthropics/claude-code) skill that keeps your prompt cache warm while you're away. Prevents expensive cold cache rebuilds when you return from a break.

The problem

When you step away from a Claude Code session, the prompt cache expires after its TTL (5 minutes under overage pricing, 1 hour normally). Returning to a large context forces a full cache rebuild at $10/MTok (1h write) instead of a cache read at $0.50/MTok. A 460k token context costs ~$3.86 to rebuild from scratch.

The solution

`/coffee 30` schedules lightweight periodic pings that keep the cache in the "read" state while you're away. Each ping costs ~17x less than a cold rebuild.

Installation

**One-liner:**

mkdir -p ~/.claude/skills/coffee && curl -fsSL https://raw.githubusercontent.com/cnighswonger/claude-code-coffee/main/SKILL.md -o ~/.claude/skills/coffee/SKILL.md

**Or clone and install:**

git clone https://github.com/cnighswonger/claude-code-coffee.git
cd claude-code-coffee
bash install.sh

Restart Claude Code after installing to pick up the new skill.

Usage

/coffee [duration]

Command	Duration	Description
/coffee	30 min	Default coffee break
/coffee 15	15 min	Quick break
/coffee 1h	1 hour	Meeting
/coffee 2h	2 hours	Long lunch
/coffee overnight	Until 8 AM	Overnight warmer
/coffee overnight 7	Until 7 AM	Custom wake time

When invoked, the skill:

1. Detects your current cache TTL tier (5min or 1h)
2. Estimates your context size
3. Shows a cost breakdown (ping cost vs cold start cost vs savings)
4. Schedules recurring keepalive pings at the right interval
5. Schedules an