prompt-timestamp
Prefixes every prompt you type with the local date and time, visible to you and Claude.
newprompt
Prefixes every prompt you type with the local date and time, visible to you and Claude.
A Claude Code mod that puts the local date and time (month-day, hour:minute) at the front of every prompt you type:
> [10-02 14:03 EDT] fix the bugThe timestamp is part of the prompt text, so it shows in the transcript and Claude reads it too.
Only prompts a person sent: typed at the terminal, or sent through Remote Control. Background task notifications, scheduled /loop prompts, other plugins, and peer sessions are left alone.
Claude Code 2.1.287 or later (mods support).
claude plugin marketplace add Vibe-Commit/claude-context-mods
claude plugin install prompt-timestamp@claude-context-modsTo try a local checkout instead: claude --plugin-dir ./prompt-timestamp.
claude plugin validate ./prompt-timestamp
claude plugin test ./prompt-timestamp.claude-plugin/types/ is written by Claude Code when the mod loads and is git-ignored. Once it exists, tsc -p ./prompt-timestamp type-checks the mod.
hooks/register.ts 33 lines1import type { Register } from 'claude-code'
2
3// Only stamp prompts a person typed: the terminal, or Remote Control.
4const HUMAN_ORIGINS = new Set(['composer', 'bridge'])
5
6export const register: Register = on => {
7 on('prompt.submit', async ($, e, next) => {
8 if (!HUMAN_ORIGINS.has(e.origin.kind) || e.text.trim() === '') {
9 return next(e)
10 }
11
12 const stamp = formatStamp(await $.clock.now())
13
14 return next({ ...e, text: `[${stamp}] ${e.text}` })
15 })
16}
17
18// "10-02 14:03 EDT" in the machine's local time zone.
19export function formatStamp(ms: number): string {
20 const parts = new Intl.DateTimeFormat('en-US', {
21 month: '2-digit',
22 day: '2-digit',
23 hour: '2-digit',
24 minute: '2-digit',
25 hourCycle: 'h23',
26 timeZoneName: 'short',
27 }).formatToParts(new Date(ms))
28 const get = (type: Intl.DateTimeFormatPartTypes) =>
29 parts.find(p => p.type === type)?.value ?? ''
30
31 return `${get('month')}-${get('day')} ${get('hour')}:${get('minute')} ${get('timeZoneName')}`
32}
33