# Claude Code v2.1.199: system prompt

> 1 of 27 tool descriptions changed. Compared against v2.1.198.

Web version: https://changelogs.core-directive.com/prompts/2.1.199?arm=cli

## What this version holds
- model strings captured: 27
- tool descriptions: 27
- compared against: v2.1.198
- system prompt edits: 0
- widest system prompt edit: +0/-0 lines
- tool descriptions changed: 1

## What moved

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

This edit reached all 27 arms.

```diff
@@ from line 11 @@
 | `"researcher"` | Teammate by name |
 | `"main"` | The main conversation (background subagents only) |
 
-Your plain text output is NOT visible to other agents — to communicate, you MUST call this tool. Messages from teammates are delivered automatically; you don't check an inbox. Refer to active teammates by name; to resume a completed background agent, use the `agentId` (format `a...-...`) from its spawn result. When relaying, don't quote the original — it's already rendered to the user.
+Your plain text output is NOT visible to other agents — to communicate, you MUST call this tool. Messages from teammates are delivered automatically; you don't check an inbox. Refer to active teammates by name; to address a background agent that has no name (or whose name a teammate holds) — or to resume a completed one — use its `agentId` (format `a...-...`) from its spawn result. When relaying, don't quote the original — it's already rendered to the user.
```

## Tool descriptions
- Agent: https://changelogs.core-directive.com/prompts/2.1.199/tools/Agent.txt?arm=cli
- AskUserQuestion: https://changelogs.core-directive.com/prompts/2.1.199/tools/AskUserQuestion.txt?arm=cli
- Bash: https://changelogs.core-directive.com/prompts/2.1.199/tools/Bash.txt?arm=cli
- CronCreate: https://changelogs.core-directive.com/prompts/2.1.199/tools/CronCreate.txt?arm=cli
- CronDelete: https://changelogs.core-directive.com/prompts/2.1.199/tools/CronDelete.txt?arm=cli
- CronList: https://changelogs.core-directive.com/prompts/2.1.199/tools/CronList.txt?arm=cli
- Edit: https://changelogs.core-directive.com/prompts/2.1.199/tools/Edit.txt?arm=cli
- EnterPlanMode: https://changelogs.core-directive.com/prompts/2.1.199/tools/EnterPlanMode.txt?arm=cli
- EnterWorktree: https://changelogs.core-directive.com/prompts/2.1.199/tools/EnterWorktree.txt?arm=cli
- ExitPlanMode: https://changelogs.core-directive.com/prompts/2.1.199/tools/ExitPlanMode.txt?arm=cli
- ExitWorktree: https://changelogs.core-directive.com/prompts/2.1.199/tools/ExitWorktree.txt?arm=cli
- NotebookEdit: https://changelogs.core-directive.com/prompts/2.1.199/tools/NotebookEdit.txt?arm=cli
- Read: https://changelogs.core-directive.com/prompts/2.1.199/tools/Read.txt?arm=cli
- ReportFindings: https://changelogs.core-directive.com/prompts/2.1.199/tools/ReportFindings.txt?arm=cli
- ScheduleWakeup: https://changelogs.core-directive.com/prompts/2.1.199/tools/ScheduleWakeup.txt?arm=cli
- SendMessage (changed in this version): https://changelogs.core-directive.com/prompts/2.1.199/tools/SendMessage.txt?arm=cli
- Skill: https://changelogs.core-directive.com/prompts/2.1.199/tools/Skill.txt?arm=cli
- TaskCreate: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskCreate.txt?arm=cli
- TaskGet: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskGet.txt?arm=cli
- TaskList: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskList.txt?arm=cli
- TaskOutput: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskOutput.txt?arm=cli
- TaskStop: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskStop.txt?arm=cli
- TaskUpdate: https://changelogs.core-directive.com/prompts/2.1.199/tools/TaskUpdate.txt?arm=cli
- WebFetch: https://changelogs.core-directive.com/prompts/2.1.199/tools/WebFetch.txt?arm=cli
- WebSearch: https://changelogs.core-directive.com/prompts/2.1.199/tools/WebSearch.txt?arm=cli
- Workflow: https://changelogs.core-directive.com/prompts/2.1.199/tools/Workflow.txt?arm=cli
- Write: https://changelogs.core-directive.com/prompts/2.1.199/tools/Write.txt?arm=cli

## Full text
- system prompt: https://changelogs.core-directive.com/prompts/2.1.199/system.txt?arm=cli