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

It installs a specific CLI release, runs it once through claude-tap, captures the prompt-bearing HTTP request, and writes a comparison-friendly Markdown snapshot.

Phistory uses the PyPI release claude-tap >= 0.1.102, where capture-only prompt snapshot export is available upstream.

GitHub Actions checks supported CLI releases every hour and commits new prompt snapshots when they appear.

Open the prompt diff viewer

uv run phistory capture --latest --agents claude-code,codex,openclaw,hermes,kimi,opencode,pi
uv run phistory backfill claude-code --from 2.1.113 --to latest
uv run phistory render-index
uv run phistory render-site

index.html is a static prompt viewer with version navigation and Monaco-powered diffs. GitHub Pages deploys it directly from this repository.

Use the viewer for human comparison. Use captures/index.json and docs/captures.md when you need an index of every archived snapshot.

• Claude Code (@anthropic-ai/claude-code)
• Codex CLI (@openai/codex)
• OpenClaw (openclaw)
• Hermes Agent (hermes-agent)
• Kimi CLI (MoonshotAI/kimi-cli)
• opencode (opencode-ai)
• Pi (@earendil-works/pi-coding-agent)

Each capture is stored under captures/<agent>/<version>/:

• prompt.md: normalized prompt snapshot for reading and diffing
• trace.jsonl: raw captured HTTP trace, kept unnormalized as evidence
• meta.json: package, version, command, and capture metadata

The generated indexes are:

• captures/index.json: compact machine-readable capture index
• docs/captures.md: full human-readable capture table

• Use README.md for the project overview and current capture status.
• Use captures/index.json to discover available agents, versions, prompt paths, and trace paths.
• Use captures/<agent>/<version>/prompt.md when you need a normalized prompt snapshot.
• Use captures/<agent>/<version>/trace.jsonl only when you need raw HTTP capture evidence.
• Treat index.html as a human-facing viewer; it is not the canonical machine-readable index.

• linux.do

Last capture update: 2026-06-11 11:14 UTC