Claude Inject Idle Time

Claude Code Idle Timing Plugin

Claude Code plugin that injects hidden timing context alongside each user message.

The plugin adds up to three fields inside a compact [timing] block:

- local_time — local time with explicit UTC offset (only on the first prompt of a session)
- idle_for — seconds idle since the assistant's last stop
- last_turn_dur — seconds the previous assistant turn took to run

Each prompt gets a hidden block Claude reads but you never see in your transcript:

What It Does

The plugin uses official Claude Code hooks:

- UserPromptSubmit injects hidden timing context on every prompt
- UserPromptSubmit also shows a compact TUI note like [after 5m 2s] when the user replies after more than 10 seconds of idle time
- Stop persists per-session timing state for the next turn
- PreCompact resets the idle timer when context compaction runs, so the statusline counts from the compaction event rather than the last pre-compact reply

On a fresh session, unavailable prior-turn fields are omitted.

Install via Marketplace

Statusline integration (optional)

This plugin ships a composable fragment that prints the elapsed time since
the model's last reply. Two implementations are provided:

- scripts/statusline-fragment.sh — POSIX-sh, no node cold-start. Recommended.
  Reads a small per-session file (.lastresponse) that the hooks keep
  updated, so it costs , --drop-seconds-after  (default 900, i.e. 15 minutes).
- .js: --session-id , --model-id , --drop-seconds-after  (default 900).

Statusline state table

The fragment produces the following outputs:

Observability

The plugin keeps all of its runtime state under the directory pointed to by the CLAUDE_PLUGIN_DATA environment variable (Claude Code sets this per session). Two subdirectories are created there:

-…