# Claude Code v2.1.251: system prompt

> 1 of 30 tool descriptions changed. The appended system-reminder blocks moved: 1 line added, 1 line removed. Compared against v2.1.250.

Web version: https://changelogs.core-directive.com/prompts/2.1.251?arm=cli&config=flags-anon

## What this version holds
- model strings captured: 27
- tool descriptions: 30
- compared against: v2.1.250
- system prompt edits: 0
- widest system prompt edit: +0/-0 lines
- tool descriptions changed: 1

## What moved

### Tool: Bash, reached 1 of 27 arms (+1/-1 lines)

This edit reached 1 of 27 arms: default.

```diff
@@ 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 <noreply@anthropic.com>
+Co-Authored-By: Claude Code <noreply@anthropic.com>
 - End PR bodies with:
 🤖 Generated with [Claude Code](https://claude.com/claude-code)
```

### Tool: Bash, reached 1 of 27 arms (+2/-2 lines)

This edit reached 1 of 27 arms: sonnet[1m].

```diff
@@ 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 <noreply@anthropic.com>
+   Co-Authored-By: Claude Code <noreply@anthropic.com>
    - 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
```

```diff
@@ from line 75 @@
 git commit -m "$(cat <<'EOF'
    Commit message here.
 
-   Co-Authored-By: Claude <noreply@anthropic.com>
+   Co-Authored-By: Claude Code <noreply@anthropic.com>
    EOF
    )"
 </example>
```

## Tool descriptions
- Agent: https://changelogs.core-directive.com/prompts/2.1.251/tools/Agent.txt?arm=cli&config=flags-anon
- AskUserQuestion: https://changelogs.core-directive.com/prompts/2.1.251/tools/AskUserQuestion.txt?arm=cli&config=flags-anon
- Bash (changed in this version): https://changelogs.core-directive.com/prompts/2.1.251/tools/Bash.txt?arm=cli&config=flags-anon
- CronCreate: https://changelogs.core-directive.com/prompts/2.1.251/tools/CronCreate.txt?arm=cli&config=flags-anon
- CronDelete: https://changelogs.core-directive.com/prompts/2.1.251/tools/CronDelete.txt?arm=cli&config=flags-anon
- CronList: https://changelogs.core-directive.com/prompts/2.1.251/tools/CronList.txt?arm=cli&config=flags-anon
- Edit: https://changelogs.core-directive.com/prompts/2.1.251/tools/Edit.txt?arm=cli&config=flags-anon
- EnterPlanMode: https://changelogs.core-directive.com/prompts/2.1.251/tools/EnterPlanMode.txt?arm=cli&config=flags-anon
- EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.251/tools/EnterWorktree.txt?arm=cli&config=flags-anon
- ExitPlanMode: https://changelogs.core-directive.com/prompts/2.1.251/tools/ExitPlanMode.txt?arm=cli&config=flags-anon
- ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.251/tools/ExitWorktree.txt?arm=cli&config=flags-anon
- ListAgents: https://changelogs.core-directive.com/prompts/2.1.251/tools/ListAgents.txt?arm=cli&config=flags-anon
- Monitor: https://changelogs.core-directive.com/prompts/2.1.251/tools/Monitor.txt?arm=cli&config=flags-anon
- NotebookEdit: https://changelogs.core-directive.com/prompts/2.1.251/tools/NotebookEdit.txt?arm=cli&config=flags-anon
- PushNotification: https://changelogs.core-directive.com/prompts/2.1.251/tools/PushNotification.txt?arm=cli&config=flags-anon
- Read: https://changelogs.core-directive.com/prompts/2.1.251/tools/Read.txt?arm=cli&config=flags-anon
- ReportFindings: https://changelogs.core-directive.com/prompts/2.1.251/tools/ReportFindings.txt?arm=cli&config=flags-anon
- ScheduleWakeup: https://changelogs.core-directive.com/prompts/2.1.251/tools/ScheduleWakeup.txt?arm=cli&config=flags-anon
- SendMessage: https://changelogs.core-directive.com/prompts/2.1.251/tools/SendMessage.txt?arm=cli&config=flags-anon
- Skill: https://changelogs.core-directive.com/prompts/2.1.251/tools/Skill.txt?arm=cli&config=flags-anon
- TaskCreate: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskCreate.txt?arm=cli&config=flags-anon
- TaskGet: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskGet.txt?arm=cli&config=flags-anon
- TaskList: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskList.txt?arm=cli&config=flags-anon
- TaskOutput: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskOutput.txt?arm=cli&config=flags-anon
- TaskStop: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskStop.txt?arm=cli&config=flags-anon
- TaskUpdate: https://changelogs.core-directive.com/prompts/2.1.251/tools/TaskUpdate.txt?arm=cli&config=flags-anon
- WebFetch: https://changelogs.core-directive.com/prompts/2.1.251/tools/WebFetch.txt?arm=cli&config=flags-anon
- WebSearch: https://changelogs.core-directive.com/prompts/2.1.251/tools/WebSearch.txt?arm=cli&config=flags-anon
- Workflow: https://changelogs.core-directive.com/prompts/2.1.251/tools/Workflow.txt?arm=cli&config=flags-anon
- Write: https://changelogs.core-directive.com/prompts/2.1.251/tools/Write.txt?arm=cli&config=flags-anon

## Full text
- system prompt: https://changelogs.core-directive.com/prompts/2.1.251/system.txt?arm=cli&config=flags-anon