WEIFENG2333/phistory

464 stars · Last commit 2026-08-02

Phistory automatically archives versioned system prompt snapshots from agent CLIs like Claude Code, Codex, OpenClaw, and Hermes.

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README preview

# Phistory

[中文](README_zh.md)

Phistory tracks how system prompts change across popular coding-agent CLIs like Claude Code, Codex, Antigravity, Grok Build, Kimi Code, MiMo Code, OpenClaw, Hermes, Kimi CLI, opencode, Pi, and Oh My Pi.

Open the web viewer to compare prompt snapshots across versions and see how agent design changes through prompts, tools, policies, and runtime instructions.

**Start here:** [phistory.cc](https://phistory.cc/)

> Checks for new releases hourly. Archive last updated: **2026-08-02 08:38 UTC**.

![Phistory prompt diff viewer](docs/screenshot.png)

## Why Use It

- Follow how Anthropic, OpenAI, and other agent builders iterate on system prompts over time.
- See when new tools, permission checks, model defaults, and user-confirmation rules are added.
- Compare how different CLIs structure agent behavior, tool use, and developer-facing constraints.
- Cite stable prompt snapshots in posts, research notes, audits, or debugging reports.

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