# Claude Code v2.1.163: system prompt

> 1 of 25 tool descriptions changed. The appended system-reminder blocks moved: 3 lines added, 3 lines removed. Compared against v2.1.162.

Web version: https://changelogs.core-directive.com/prompts/2.1.163?arm=cli

## What this version holds
- model strings captured: 27
- tool descriptions: 25
- compared against: v2.1.162
- system prompt edits: 0
- widest system prompt edit: +0/-0 lines
- tool descriptions changed: 1

## What moved

### Tool: Workflow (+1/-1 lines)

This edit reached all 27 arms.

```diff
@@ from line 76 @@
   const c = await parallel(b.map(...))
 that middle transform doesn't need the barrier. Rewrite as a pipeline with the transform inside a stage. When in doubt: pipeline.
 
-Concurrent agent() calls are capped at min(16, cpu cores - 2) per workflow — excess calls queue and run as slots free up. You can still pass 100 items to parallel()/pipeline() and they all complete; only ~10 run at any moment. Total agent count across a workflow's lifetime is capped at 1000 — a runaway-loop backstop set far above any real workflow.
+Concurrent agent() calls are capped at min(16, cpu cores - 2) per workflow — excess calls queue and run as slots free up. You can still pass 100 items to parallel()/pipeline() and they all complete; only ~10 run at any moment. Total agent count across a workflow's lifetime is capped at 1000 — a runaway-loop backstop set far above any real workflow. A single parallel()/pipeline() call accepts at most 4096 items; passing more is an explicit error, not a silent truncation.
 
 The canonical multi-stage pattern — pipeline by default, each dimension verifies as soon as its review completes:
   export const meta = {
```

## Tool descriptions
- Agent: https://changelogs.core-directive.com/prompts/2.1.163/tools/Agent.txt?arm=cli
- AskUserQuestion: https://changelogs.core-directive.com/prompts/2.1.163/tools/AskUserQuestion.txt?arm=cli
- Bash: https://changelogs.core-directive.com/prompts/2.1.163/tools/Bash.txt?arm=cli
- CronCreate: https://changelogs.core-directive.com/prompts/2.1.163/tools/CronCreate.txt?arm=cli
- CronDelete: https://changelogs.core-directive.com/prompts/2.1.163/tools/CronDelete.txt?arm=cli
- CronList: https://changelogs.core-directive.com/prompts/2.1.163/tools/CronList.txt?arm=cli
- Edit: https://changelogs.core-directive.com/prompts/2.1.163/tools/Edit.txt?arm=cli
- EnterPlanMode: https://changelogs.core-directive.com/prompts/2.1.163/tools/EnterPlanMode.txt?arm=cli
- EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.163/tools/EnterWorktree.txt?arm=cli
- ExitPlanMode: https://changelogs.core-directive.com/prompts/2.1.163/tools/ExitPlanMode.txt?arm=cli
- ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.163/tools/ExitWorktree.txt?arm=cli
- NotebookEdit: https://changelogs.core-directive.com/prompts/2.1.163/tools/NotebookEdit.txt?arm=cli
- Read: https://changelogs.core-directive.com/prompts/2.1.163/tools/Read.txt?arm=cli
- ScheduleWakeup: https://changelogs.core-directive.com/prompts/2.1.163/tools/ScheduleWakeup.txt?arm=cli
- Skill: https://changelogs.core-directive.com/prompts/2.1.163/tools/Skill.txt?arm=cli
- TaskCreate: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskCreate.txt?arm=cli
- TaskGet: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskGet.txt?arm=cli
- TaskList: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskList.txt?arm=cli
- TaskOutput: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskOutput.txt?arm=cli
- TaskStop: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskStop.txt?arm=cli
- TaskUpdate: https://changelogs.core-directive.com/prompts/2.1.163/tools/TaskUpdate.txt?arm=cli
- WebFetch: https://changelogs.core-directive.com/prompts/2.1.163/tools/WebFetch.txt?arm=cli
- WebSearch: https://changelogs.core-directive.com/prompts/2.1.163/tools/WebSearch.txt?arm=cli
- Workflow (changed in this version): https://changelogs.core-directive.com/prompts/2.1.163/tools/Workflow.txt?arm=cli
- Write: https://changelogs.core-directive.com/prompts/2.1.163/tools/Write.txt?arm=cli

## Full text
- system prompt: https://changelogs.core-directive.com/prompts/2.1.163/system.txt?arm=cli