Reveal hidden timestamps in Claude conversations with robust DOM/API handling, XHR support, and debounced observer; always show year; larger font.
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## Claude Conversation Timestamps Script for the tampermonkey.com extension to a web browser
#### Ver 2.3 | 2025-08-14
#### By baseline Claude Sonnet 4 with tweaks by baseline ChatGPT-5 and Wayne L. "Grasshopper" Pendley
**What the script does:**
- Adds permanent timestamps to every message in Claude conversations
- Shows format like "Aug 14, 2025, 1:22 PM"
- No hovering required - timestamps are always visible
- Uses readable 16px font size
- Works automatically as you chat
**Key benefits:**
- Track conversation timing for reference
- See exactly when messages were sent/received
- Timestamps become part of your chat history
- Clean integration that looks native to Claude's interface
This addresses a real gap since Claude doesn't show message timestamps by default.
#### Version History
Originally authored by Claude Sonnet 4, then enhanced by ChatGPT-5 who hardened fetch handling, expanded React prop key checks, added JSON size guards, prevented overlapping runs, cleaned CSS, built in XHR interception, and wrapped DOM-change triggers in a 250 ms debounce for smoother performance. ChatGPT-5 also handled Grasshopper's iterative tweak requests, including making the year display constant, increasing the font size for aged eyes, and changing the font color levels for just a bit more contrast without visual noise.
