# Claude Code v2.1.280: system prompt

> 1 of 14 tool descriptions changed. The appended system-reminder blocks moved: 2 lines added, 2 lines removed. Compared against v2.1.278.

Web version: https://changelogs.core-directive.com/prompts/2.1.280?surface=subagent-plan

## What this version holds
- model strings captured: 1
- tool descriptions: 14
- compared against: v2.1.278
- system prompt edits: 0
- widest system prompt edit: +0/-0 lines
- tool descriptions changed: 1

## What moved

### Tool: Bash (+0/-1 lines)

This edit reached all 1 arms.

```diff
@@ from line 1 @@
 Executes a bash command and returns its output.
 
 - 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.
```

## Tool descriptions
- Bash (changed in this version): https://changelogs.core-directive.com/prompts/2.1.280/tools/Bash.txt?surface=subagent-plan
- CronCreate: https://changelogs.core-directive.com/prompts/2.1.280/tools/CronCreate.txt?surface=subagent-plan
- CronDelete: https://changelogs.core-directive.com/prompts/2.1.280/tools/CronDelete.txt?surface=subagent-plan
- CronList: https://changelogs.core-directive.com/prompts/2.1.280/tools/CronList.txt?surface=subagent-plan
- EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.280/tools/EnterWorktree.txt?surface=subagent-plan
- ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.280/tools/ExitWorktree.txt?surface=subagent-plan
- ListAgents: https://changelogs.core-directive.com/prompts/2.1.280/tools/ListAgents.txt?surface=subagent-plan
- Read: https://changelogs.core-directive.com/prompts/2.1.280/tools/Read.txt?surface=subagent-plan
- ReportFindings: https://changelogs.core-directive.com/prompts/2.1.280/tools/ReportFindings.txt?surface=subagent-plan
- SendMessage: https://changelogs.core-directive.com/prompts/2.1.280/tools/SendMessage.txt?surface=subagent-plan
- Skill: https://changelogs.core-directive.com/prompts/2.1.280/tools/Skill.txt?surface=subagent-plan
- TaskStop: https://changelogs.core-directive.com/prompts/2.1.280/tools/TaskStop.txt?surface=subagent-plan
- WebFetch: https://changelogs.core-directive.com/prompts/2.1.280/tools/WebFetch.txt?surface=subagent-plan
- WebSearch: https://changelogs.core-directive.com/prompts/2.1.280/tools/WebSearch.txt?surface=subagent-plan

## Full text
- system prompt: https://changelogs.core-directive.com/prompts/2.1.280/system.txt?surface=subagent-plan