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Sweep 28 Aug 2026 ยท 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Prompt capture

v2.1.8 system prompt

1 of 17 tool descriptions changed. Compared against v2.1.7.

Agent SDK, print mode 27 model strings 17 tools released captured Markdown

WebSearch +1 −1 of 27 lines

This edit reached all 27 arms

from line 23 
 
 IMPORTANT - Use the correct year in search queries:
   - Today's date is 2026-08-14. You MUST use this year when searching for recent information, documentation, or current events.
-  - Example: If today is 2025-07-15 and the user asks for "latest React docs", search for "React documentation 2025", NOT "React documentation 2024"
+  - Example: If the user asks for "latest React docs", search for "React documentation 2026", NOT "React documentation 2025"

The full text

The whole documents, one page each, exactly as they were sent.

Read the whole system prompt → All 17 tool descriptions →