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CATCH #1443 DETECTED SEP 18, 2026 02:31 UTC
THE CATCHscore 8/10
EXHIBIT 1443 · FLASH
Sep 18, 2026 02:31 UTC github_releases+pages anthropics/claude-code
anthropics/claude-code published a release: v2.1.276 — corroborated across 2 sources (github_releases, pages)
EVIDENCE — the receipts
[MERGED across 2 sources: github_releases, pages]
shared signal: claude-code

--- github_releases :: anthropics/claude-code ---
anthropics/claude-code release: v2.1.276
name: v2.1.276
published: 2026-09-18T02:12:26Z
url: https://github.com/anthropics/claude-code/releases/tag/v2.1.276

## What's changed

- Fixed every request failing with `400 … Input tag 'advisor_20260301'` when `ANTHROPIC_BASE_URL` points at a proxy or gateway (2.1.275 regression)

--- pages :: https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md ---
Claude Code changelog changed: https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md
2 added lines

--- 
+++ 
@@ -1,2 +1,4 @@
 # Changelog
+## 2.1.276
+- Fixed every request failing with `400 … Input tag 'advisor_20260301'` when `ANTHROPIC_BASE_URL` points at a proxy or gateway (2.1.275 regression)
 ## 2.1.275

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