The full text
The whole documents, one page each, exactly as they were sent.
Prompt capture
v2.1.251 system prompt
1 added and 0 removed, of 223 lines, in the prompt 17 of 27 arms receive. 3 other prompts also changed. 1 of 27 tool descriptions changed. The appended system-reminder blocks moved: 1 line added, 1 line removed. Compared against v2.1.250.
The two arm counts on this page measure different things: 17 arms receive the prompt the headline is about, and the widest edit below reached 27, because the same changed lines sit in more than one prompt.
This arm was captured with the sandbox seeded from flags-account, this account's own GrowthBook payload, seeded into the sandbox .claude.json. 566 flags from data/flags/snapshots/flags-20260828T161543Z.json. What a seeded capture does and does not tell you.
System prompt +2 −0 of 223 lines
This edit reached all 27 arms
The same edit landed in 2 other copies of this prompt, which differ from this one only in text interpolated per model.
from line 219
# Context management When the conversation grows long, some or all of the current context is summarized; the summary, along with any remaining unsummarized context, is provided in the next context window so work can continue — you don't need to wrap up early or hand off mid-task. + +<total_tokens>15000000 tokens left</total_tokens>
Bash, reached 1 of 27 arms +1 −1 of 16 lines
This edit reached 1 of 27 arms: default
from line 11
- Use the `gh` CLI for GitHub operations (PRs, issues, API). - Commit or push only when the user asks. If on the default branch, branch first. - End git commit messages with: -Co-Authored-By: Claude <[email protected]> +Co-Authored-By: Claude Code <[email protected]> - End PR bodies with: 🤖 Generated with [Claude Code](https://claude.com/claude-code)
Bash, reached 1 of 27 arms +2 −2 of 118 lines
This edit reached 1 of 27 arms: sonnet[1m]
from line 58
3. Run the following commands in parallel: - Add relevant untracked files to the staging area. - Create the commit with a message ending with: - Co-Authored-By: Claude <[email protected]> + Co-Authored-By: Claude Code <[email protected]> - Run git status after the commit completes to verify success. Note: git status depends on the commit completing, so run it sequentially after the commit. 4. If the commit fails due to pre-commit hook: fix the issue and create a NEW commit
from line 75
git commit -m "$(cat <<'EOF' Commit message here. - Co-Authored-By: Claude <[email protected]> + Co-Authored-By: Claude Code <[email protected]> EOF )" </example>