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README.md
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@ -34,7 +34,7 @@ Download it and try it out for free! **https://piebald.ai/**
> [!important] > [!important]
> **NEW (January 23, 2026): We've added all of Claude Code's ~40 system reminders to this list—see [System Reminders](#system-reminders).** > **NEW (January 23, 2026): We've added all of Claude Code's ~40 system reminders to this list—see [System Reminders](#system-reminders).**
This repository contains an up-to-date list of all Claude Code's various system prompts and their associated token counts as of **[Claude Code v2.1.101](https://www.npmjs.com/package/@anthropic-ai/claude-code/v/2.1.101) (April 10th, 2026).** It also contains a [**CHANGELOG.md**](./CHANGELOG.md) for the system prompts across 147 versions since v2.0.14. From the team behind [<img src="https://github.com/Piebald-AI/piebald/raw/main/assets/logo.svg" width="15"> **Piebald.**](https://piebald.ai/) This repository contains an up-to-date list of all Claude Code's various system prompts and their associated token counts as of **[Claude Code v2.1.104](https://www.npmjs.com/package/@anthropic-ai/claude-code/v/2.1.104) (April 11th, 2026).** It also contains a [**CHANGELOG.md**](./CHANGELOG.md) for the system prompts across 148 versions since v2.0.14. From the team behind [<img src="https://github.com/Piebald-AI/piebald/raw/main/assets/logo.svg" width="15"> **Piebald.**](https://piebald.ai/)
**This repository is updated within minutes of each Claude Code release. See the [changelog](./CHANGELOG.md), and follow [@PiebaldAI](https://x.com/PiebaldAI) on X for a summary of the system prompt changes in each release.** **This repository is updated within minutes of each Claude Code release. See the [changelog](./CHANGELOG.md), and follow [@PiebaldAI](https://x.com/PiebaldAI) on X for a summary of the system prompt changes in each release.**
@ -173,7 +173,7 @@ Parts of the main system prompt.
- [System Prompt: Censoring assistance with malicious activities](./system-prompts/system-prompt-censoring-assistance-with-malicious-activities.md) (**98** tks) - Guidelines for assisting with authorized security testing, defensive security, CTF challenges, and educational contexts while censoring requests for malicious activities. - [System Prompt: Censoring assistance with malicious activities](./system-prompts/system-prompt-censoring-assistance-with-malicious-activities.md) (**98** tks) - Guidelines for assisting with authorized security testing, defensive security, CTF challenges, and educational contexts while censoring requests for malicious activities.
- [System Prompt: Chrome browser MCP tools](./system-prompts/system-prompt-chrome-browser-mcp-tools.md) (**156** tks) - Instructions for loading Chrome browser MCP tools via MCPSearch before use. - [System Prompt: Chrome browser MCP tools](./system-prompts/system-prompt-chrome-browser-mcp-tools.md) (**156** tks) - Instructions for loading Chrome browser MCP tools via MCPSearch before use.
- [System Prompt: Claude in Chrome browser automation](./system-prompts/system-prompt-claude-in-chrome-browser-automation.md) (**759** tks) - Instructions for using Claude in Chrome browser automation tools effectively. - [System Prompt: Claude in Chrome browser automation](./system-prompts/system-prompt-claude-in-chrome-browser-automation.md) (**759** tks) - Instructions for using Claude in Chrome browser automation tools effectively.
- [System Prompt: Communication style](./system-prompts/system-prompt-communication-style.md) (**289** tks) - Instructs Claude to give brief, user-facing updates at key moments during tool use, write concise end-of-turn summaries, match response format to task complexity, and avoid comments and planning documents in code. - [System Prompt: Communication style](./system-prompts/system-prompt-communication-style.md) (**297** tks) - Instructs Claude to give brief, user-facing updates at key moments during tool use, write concise end-of-turn summaries, match response format to task complexity, and avoid comments and planning documents in code.
- [System Prompt: Context compaction summary](./system-prompts/system-prompt-context-compaction-summary.md) (**278** tks) - Prompt used for context compaction summary (for the SDK). - [System Prompt: Context compaction summary](./system-prompts/system-prompt-context-compaction-summary.md) (**278** tks) - Prompt used for context compaction summary (for the SDK).
- [System Prompt: Description part of memory instructions](./system-prompts/system-prompt-description-part-of-memory-instructions.md) (**148** tks) - Field for describing _what_ the memory is. Part of a bigger effort to instruct Claude how to create memories. - [System Prompt: Description part of memory instructions](./system-prompts/system-prompt-description-part-of-memory-instructions.md) (**148** tks) - Field for describing _what_ the memory is. Part of a bigger effort to instruct Claude how to create memories.
- [System Prompt: Doing tasks (ambitious tasks)](./system-prompts/system-prompt-doing-tasks-ambitious-tasks.md) (**47** tks) - Allow users to complete ambitious tasks; defer to user judgement on scope. - [System Prompt: Doing tasks (ambitious tasks)](./system-prompts/system-prompt-doing-tasks-ambitious-tasks.md) (**47** tks) - Allow users to complete ambitious tasks; defer to user judgement on scope.

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system-prompts/system-prompt-communication-style.md
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<!-- <!--
name: 'System Prompt: Communication style' name: 'System Prompt: Communication style'
description: Instructs Claude to give brief, user-facing updates at key moments during tool use, write concise end-of-turn summaries, match response format to task complexity, and avoid comments and planning documents in code description: Instructs Claude to give brief, user-facing updates at key moments during tool use, write concise end-of-turn summaries, match response format to task complexity, and avoid comments and planning documents in code
ccVersion: 2.1.100 ccVersion: 2.1.104
--> -->
# Communication style # Text output (does not apply to tool calls)
Assume users can't see most tool calls or thinking — only your text output. Before your first tool call, state in one sentence what you're about to do. While working, give short updates at key moments: when you find something, when you change direction, or when you hit a blocker. Brief is good — silent is not. One sentence per update is almost always enough. Assume users can't see most tool calls or thinking — only your text output. Before your first tool call, state in one sentence what you're about to do. While working, give short updates at key moments: when you find something, when you change direction, or when you hit a blocker. Brief is good — silent is not. One sentence per update is almost always enough.
Don't narrate your internal deliberation. User-facing text should be relevant communication to the user, not a running commentary on your thought process. State results and decisions directly, and focus user-facing text on relevant updates for the user. Don't narrate your internal deliberation. User-facing text should be relevant communication to the user, not a running commentary on your thought process. State results and decisions directly, and focus user-facing text on relevant updates for the user.