https://github.com/marckrenn/claude-code-changelog

Tracking prompts, feature flags and metadata of Claude Code releases. Subscribe to ↓
https://github.com/marckrenn/claude-code-changelog

ai-agents anthropic anthropic-claude claude-code claude-code-system-prompts system-prompts system-prompts-leak

Last synced: 14 days ago
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Tracking prompts, feature flags and metadata of Claude Code releases. Subscribe to ↓

• Host: GitHub
• URL: https://github.com/marckrenn/claude-code-changelog
• Owner: marckrenn
• Created: 2025-08-05T11:50:32.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2026-05-28T18:04:44.000Z (17 days ago)
• Last Synced: 2026-05-28T20:04:41.796Z (17 days ago)
• Topics: ai-agents, anthropic, anthropic-claude, claude-code, claude-code-system-prompts, system-prompts, system-prompts-leak
• Homepage: https://x.com/ClaudeCodeLog
• Size: 35 MB
• Stars: 819
• Watchers: 41
• Forks: 69
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml

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README

          
# Claude Code Changelog

[![Status](https://status.marckrenn.dev/api/badge/3/status)](https://status.marckrenn.dev/status/claudecodechangelog)

[![Uptime](https://status.marckrenn.dev/api/badge/3/uptime)](https://status.marckrenn.dev/status/claudecodechangelog)

> [!NOTE]

> This archive takes some time and money (server, tokens) to run.

>

> I’d appreciate any support – a free follow on X or chipping in a few bucks.

>

> [![Follow on X](https://img.shields.io/badge/Follow-%40ClaudeCodeLog-000000?logo=x&logoColor=white)](https://x.com/ClaudeCodeLog)

> [![GitHub Sponsors](https://img.shields.io/badge/GitHub-Sponsors-EA4AAA?logo=githubsponsors&logoColor=white)](https://github.com/sponsors/marckrenn)

> [![Buy Me a Coffee](https://img.shields.io/badge/Buy%20Me%20a%20Coffee-FFDD00?logo=buymeacoffee&logoColor=000000)](https://buymeacoffee.com/marckrenn)

Unofficial, community-maintained tracking of [Claude Code](https://docs.anthropic.com/en/docs/claude-code) prompt and feature-flag evolution across releases.

## What's Tracked

- `cc-prompt.md` – legacy compatibility file per tag

- `cc-flags.md` – legacy compatibility file per tag

- `system-prompts/*.md` – extracted prompt artifacts grouped by category (see [indeces](indices/))

- `meta/flags.md`, `meta/metadata.md`, `meta/cli-surface.md`, `meta/prompt-stats.md` – derived metadata

- annotated tags (`vX.Y.Z`) and GitHub releases for historical navigation

## How to Read This Repository

1. Pick two tags and open compare view:

   - `https://github.com/marckrenn/claude-code-changelog/compare/v2.1.44...v2.1.45#files_bucket`

2. Use `system-prompts/` for per-file prompt artifacts.

3. Use `meta/` for structured summaries and aggregate metrics.

4. Use `Init` / `Last edit` columns as lifecycle hints for each prompt artifact.

5. For deep full-history research, point a coding agent at this repo directly. GitHub Copilot on github.com is currently limited for broad historical search/analysis.

## Data Quality & Interpretation Notes

- Token totals and per-file counts are estimates.

- Tokenization can vary by model/tokenizer/runtime; small differences are expected.

- Aggregate totals are useful directional signals.

- Estimated LOC is derived from a prettified bundle line count and is only an approximation.

- Prompt files can contain near-duplicates or intentionally duplicated variants.

- File names can change across versions (renames/splits/merges), even when content lineage continues.

- A single conceptual prompt can appear under multiple files in some releases.

- Compare statistical deltas with raw diffs before drawing strong conclusions.

## What Powers [@ClaudeCodeLog](https://x.com/ClaudeCodeLog)

This repo is the backbone of the [@ClaudeCodeLog](https://x.com/ClaudeCodeLog) X account, which automatically:

1. Detects new Claude Code releases

2. Extracts prompts and feature flags

3. Generates structured diff summaries

4. Publishes threaded updates with focused diff links and screenshots

## Credits & Inspiration

- [Piebald-AI/claude-code-system-prompts](https://github.com/Piebald-AI/claude-code-system-prompts) – inspiration for full prompt tracking

- [cchistory](https://github.com/badlogic/cchistory) – prompt extraction foundation

- [How cchistory works](https://mariozechner.at/posts/2025-08-03-cchistory/) – technical deep-dive

- [Claude Code Documentation](https://docs.anthropic.com/en/docs/claude-code)

- [Claude Code on npm](https://www.npmjs.com/package/@anthropic-ai/claude-code)

## System Prompts Index

- Total prompt files: **81**

- [By tokens](indices/system-prompts-by-token.md)

- [By init (newest first)](indices/system-prompts-by-init.md)

- [By last edit (newest first)](indices/system-prompts-by-last-edit.md)