Anthropic adds message threads to Claude Code as email leak in User-Agent headers surfaces
This story is from 2026-11-03. It is preserved in the archive; the latest stories are on the live feed.
Anthropic shipped a beta 'thread' parameter for the Messages API that sends only new messages per turn, cutting time to first token by about 35% on 500k–1M token requests. Separately, GitHub issues revealed Claude Code was leaking account emails via User-Agent headers, with stable 2.1.311 lacking a guard.
Read the full story at The New Stack AI ↗
Timeline · 5 reports
- 2026-11-06 11:01 · DEV Community — AI
Claude Code Put Account Emails in User-Agent Headers. Stable 2.1.311 Lacks the Guard - 2026-11-06 08:22 · DEV Community — AI
Claude Code was mailing your email address to every website it visited: the User-Agent leak, the 5-month system-prompt issue, and the 5-point check - 2026-11-05 22:17 · Hacker News Front Page
Claude Code sends your email address to websites - 2026-11-04 02:07 · r/ClaudeAI
Anthropic shipped message threads (beta): Claude Code now sends only new messages per turn, about 35% lower time to first token on 500k to 1M token requests - 2026-11-03 13:46 · The New Stack AI
Anthropic speeds up Claude Code with message threads. But your token bill stays the same.