claude-code-system-prompts

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<sub>[**Scroll down for Claude Code's system prompts.**](#claude-code-system-prompts) :point_down:</sub>

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# Claude Code System Prompts

[![Mentioned in Awesome Claude Code](https://awesome.re/mentioned-badge.svg)](https://github.com/hesreallyhim/awesome-claude-code)

> [!tip]
> **NEW (June 12, 2026):** We've greatly expanded this list with many more of Claude Code's prompts&mdash;**from 350 to 515 (+165)**&mdash;our most complete coverage yet.

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 v2.1.177](https://www.npmjs.com/package/@anthropic-ai/claude-code/v/2.1.177) (June 12th, 2026).**  It also contains a [**CHANGELOG.md**](./CHANGELOG.md) for the system prompts across 210 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.**

> [!note]
> ⭐ **Star** this repository to get notified about new Claude Code versions.  For each new Claude Code version, we create a release on GitHub, which will notify all users who've starred the repository.

---

Why multiple "system prompts?"

**Claude Code doesn't just have one single string for its system prompt.**

Instead, there are:
- Large portions conditionally added depending on the environment and various configs.
- Descriptions for builtin tools like `Write`, `Bash`, and `TodoWrite`, and some are fairly large.
- Separate system prompts for builtin agents like Explore and Plan.
- Numerous AI-powered utility functions, such as conversation compaction, `CLAUDE.md` generation, session title generation, etc. featuring their own systems prompts.

The result&mdash;500+ strings that are constantly changing and moving within a very large minified JS file.

> [!important]
> Want to **modify a particular piece of the system prompt** in your own Claude Code installation?  **Use [tweakcc](https://github.com/Piebald-AI/tweakcc).**  It&mdash;
> - lets you customize the individual pieces of the system prompt as markdown files, and then
> - patches your npm-based or native (binary) Claude Code installation with them, and also
> - provides diffing and conflict management for when both you and Anthropic have conflicting modifications to the same prompt file.

## Extraction

This repository contains the system prompts extracted using a script from the latest npm version of Claude Code.  As they're extracted directly from Claude Code's compiled source code, they're guaranteed to be exactly what Claude Code uses.  If you use [tweakcc](https://github.com/Piebald-AI/tweakcc) to customize the system prompts, it works in a similar way&mdash;it patches the exact same strings in your local installation as are extracted into this repository.

## Prompts

Note that some prompts contain interpolated bits such as builtin tool name references, lists of available sub agents, and various other context-specific variables, so the actual counts in a particular Claude Code session will differ slightly&mdash;likely not beyond ±20 tokens, however.

### Agent Prompts

Sub-agents and utilities.

#### Sub-agents

- [Agent Prompt: Explore](./system-prompts/agent-prompt-explore.md) (**575** tks) - System prompt for the Explore subagent.
- [Agent Prompt: Plan mode (enhanced)](./system-prompts/agent-prompt-plan-mode-enhanced.md) (**715** tks) - Enhanced prompt for the Plan subagent.

#### Creation Assistants

- [Agent Prompt: Agent creation architect](./system-prompts/agent-prompt-agent-creation-architect.md) (**1110** tks) - System prompt for creating custom AI agents with detailed specifications.
- [Agent Prompt: CLAUDE.md creation](./system-prompts/agent-prompt-claudemd-creation.md) (**384** tks) - System prompt for analyzing codebases and creating CLAUDE.md documentation files.
- [Agent Prompt: Status line setup](./system-prompts/agent-prompt-status-line-setup.md) (**2433** tks) - System prompt for the statusline-setup agent that configures status line display.

#### Slash Commands

- [Agent Prompt: /batch slash command](./system-prompts/agent-prompt-batch-slash-command.md) (**1106** tks) - Instructions for orchestrating a large, parallelizable change across a codebase.
- [Agent Prompt: /code-review part 1 base finder angles](./system-prompts/agent-prompt-code-review-part-1-base-finder-angles.md) (**145** tks) - Line-by-line diff scan instructions for the /code-review slash command's finder-angle phase.
- [Agent Prompt: /code-review part 2 low effort mode](./system-prompts/agent-prompt-code-review-part-2-low-effort-mode.md) (**345** tks) - Low-effort /code-review prompt that reads the diff once and returns up to four hunk-visible runtime correctness findings.
- [Agent Prompt: /code-review part 3 extra-high and maximum effort modes](./system-prompts/agent-prompt-code-review-part-3-extra-high-and-maximum-effort-modes.md) (**363** tks) - Extra-high and maximum-effort /code-review prompt that runs five finder angles, one-vote verification, a gap sweep, and capped JSON findings.
- [Agent Prompt: /code-review part 4 three-state verification phase](./system-prompts/agent-prompt-code-review-part-4-three-state-verification-phase.md) (**98** tks) - Verification phase for /code-review that asks one agent verifier to classify each candidate as confirmed, plausible, or refuted.
- [Agent Prompt: /code-review part 5 recall-biased verification phase](./system-prompts/agent-prompt-code-review-part-5-recall-biased-verification-phase.md) (**175** tks) - Recall-biased /code-review verification phase that treats realistic uncertain findings as plausible unless code refutes them.
- [Agent Prompt: /code-review part 6 medium effort mode](./system-prompts/agent-prompt-code-review-part-6-medium-effort-mode.md) (**312** tks) - Medium-effort /code-review prompt that favors precision with three finder angles, one-vote verification, and up to eight JSON findings.
- [Agent Prompt: /code-review part 7 high effort mode](./system-prompts/agent-prompt-code-review-part-7-high-effort-mode.md) (**345** tks) - High-effort /code-review prompt that favors recall with three finder angles, recall-biased verification, and up to ten JSON findings.
- [Agent Prompt: /code-review part 8 GitHub comment posting](./system-prompts/agent-prompt-code-review-part-8-github-comment-posting.md) (**152** tks) - Optional /code-review instructions for posting findings as GitHub inline PR comments when --comment is passed.
- [Agent Prompt: /code-review part 9 fix application](./system-prompts/agent-prompt-code-review-part-9-fix-application.md) (**126** tks) - Optional /code-review instructions for applying findings to the working tree when --fix is passed.
- [Agent Prompt: /rename auto-generate session name](./system-prompts/agent-prompt-rename-auto-generate-session-name.md) (**80** tks) - Prompt used by /rename (no args) to auto-generate a kebab-case session name from conversation context.
- [Agent Prompt: /review-pr slash command](./system-prompts/agent-prompt-review-pr-slash-command.md) (**235** tks) - System prompt for reviewing GitHub pull requests with code analysis.
- [Agent Prompt: /schedule slash command](./system-prompts/agent-prompt-schedule-slash-command.md) (**3131** tks) - Guides the user through scheduling, updating, listing, or running remote Claude Code agents on cron triggers via the Anthropic cloud API.
- [Agent Prompt: /security-review slash command](./system-prompts/agent-prompt-security-review-slash-command.md) (**2521** tks) - Comprehensive security review prompt for analyzing code changes with focus on exploitable vulnerabilities.
- [Agent Prompt: /simplify slash command](./system-prompts/agent-prompt-simplify-slash-command.md) (**362** tks) - Instructions for the /simplify slash command that reviews changed code for reuse, simplification, efficiency, and altitude cleanups, then applies the fixes.

#### Utilities

- [Agent Prompt: Agent Hook](./system-prompts/agent-prompt-agent-hook.md) (**122** tks) - Prompt for an 'agent hook'.
- [Agent Prompt: Auto mode rule reviewer](./system-prompts/agent-prompt-auto-mode-rule-reviewer.md) (**292** tks) - Reviews and critiques user-defined auto mode classifier rules for clarity, completeness, conflicts, and actionability.
- [Agent Prompt: Away summary generation](./system-prompts/agent-prompt-away-summary-generation.md) (**73** tks) - Prompts a no-tools away-summary generation run to recap the goal, current task, and next action when the user returns.
- [Agent Prompt: Background agent state classifier](./system-prompts/agent-prompt-background-agent-state-classifier.md) (**4405** tks) - Classifies the tail of a background agent transcript as working, block