# Claude Code v2.1.265: system prompt

> 1 added and 1 removed, of 56 lines, about 2 words, in the prompt all 1 arms receive. Compared against v2.1.263.

Web version: https://changelogs.core-directive.com/prompts/2.1.265?surface=subagent-explore

## What this version holds
- model strings captured: 1
- tool descriptions: 14
- compared against: v2.1.263
- system prompt edits: 1
- widest system prompt edit: +1/-1 lines
- tool descriptions changed: 0

## What moved

### System prompt (+1/-1 lines)

This edit reached all 1 arms.

```diff
@@ from line 47 @@
 Is directory a git repo: No
 Platform: linux
 Shell: unknown
-OS Version: Linux 5.15.0-190-generic
+OS Version: Linux 5.15.0-191-generic
 </env>
 You are powered by the model named Opus 5 (1M context). The exact model ID is claude-opus-5[1m].
 
```

## Tool descriptions
- Bash: https://changelogs.core-directive.com/prompts/2.1.265/tools/Bash.txt?surface=subagent-explore
- CronCreate: https://changelogs.core-directive.com/prompts/2.1.265/tools/CronCreate.txt?surface=subagent-explore
- CronDelete: https://changelogs.core-directive.com/prompts/2.1.265/tools/CronDelete.txt?surface=subagent-explore
- CronList: https://changelogs.core-directive.com/prompts/2.1.265/tools/CronList.txt?surface=subagent-explore
- EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.265/tools/EnterWorktree.txt?surface=subagent-explore
- ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.265/tools/ExitWorktree.txt?surface=subagent-explore
- ListAgents: https://changelogs.core-directive.com/prompts/2.1.265/tools/ListAgents.txt?surface=subagent-explore
- Read: https://changelogs.core-directive.com/prompts/2.1.265/tools/Read.txt?surface=subagent-explore
- ReportFindings: https://changelogs.core-directive.com/prompts/2.1.265/tools/ReportFindings.txt?surface=subagent-explore
- SendMessage: https://changelogs.core-directive.com/prompts/2.1.265/tools/SendMessage.txt?surface=subagent-explore
- Skill: https://changelogs.core-directive.com/prompts/2.1.265/tools/Skill.txt?surface=subagent-explore
- TaskStop: https://changelogs.core-directive.com/prompts/2.1.265/tools/TaskStop.txt?surface=subagent-explore
- WebFetch: https://changelogs.core-directive.com/prompts/2.1.265/tools/WebFetch.txt?surface=subagent-explore
- WebSearch: https://changelogs.core-directive.com/prompts/2.1.265/tools/WebSearch.txt?surface=subagent-explore

## Full text
- system prompt: https://changelogs.core-directive.com/prompts/2.1.265/system.txt?surface=subagent-explore