Claude Code Changelog

[!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.

Unofficial, community-maintained tracking of 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)
• 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

This repo is the backbone of the @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 – inspiration for full prompt tracking
• cchistory – prompt extraction foundation
• How cchistory works – technical deep-dive
• Claude Code Documentation
• Claude Code on npm

System Prompts Index

• Total prompt files: 66
• By tokens
• By init (newest first)
• By last edit (newest first)