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
v2.1.234 system prompt
First capture in the ledger, so there is nothing to compare it against yet.
Claude Code, interactive mode, seeded with flags-anon27 model strings30 toolsreleased captured Markdown
This arm was captured with the sandbox seeded from flags-anon, the anonymous GrowthBook payload, seeded into the sandbox .claude.json. 506 flags from data/flags/snapshots/flags-20260817T190310Z.json. What a seeded capture does and does not tell you.
This is the oldest capture in the ledger, so there is no earlier version of these prompts to diff it against. The documents themselves are linked below.
The full text
The whole documents, one page each, exactly as they were sent.
