Source Intelligence
Sweep 28 Aug 2026 · 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

v2.1.224 system prompt

1 of 24 tool descriptions changed. Compared against v2.1.223.

Agent SDK, print mode 27 model strings 24 tools released captured Markdown

Bash, Opus 4.8 +1 −0 of 16 lines

This edit reached 4 of 27 arms: claude-fable-5, claude-mythos-5, claude-opus-4-8, default

from line 2
 
 - Working directory persists between calls, but prefer absolute paths — `cd` in a compound command can trigger a permission prompt. Shell state (env vars, functions) does not persist; the shell is initialized from the user's profile.
 - IMPORTANT: Avoid using this tool to run `cat`, `head`, `tail`, `sed`, `awk`, or `echo` commands, unless explicitly instructed or after you have verified that a dedicated tool cannot accomplish your task. Instead, use the appropriate dedicated tool as this will provide a much better experience for the user.
+- Command output is displayed to you, not reliably to the user.
 - `timeout` is in milliseconds: default 120000, max 600000.
 - `run_in_background` runs the command detached: it keeps running across turns and re-invokes you when it exits. No `&` needed.
 

The full text

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