GitHub - regent-vcs/re_gent: Git for AI coding agents.

Version control for AI agent activity. Track what your agent did, which prompt wrote each line, and rewind when things break.

Demo Every tool call is automatically captured. No manual commits needed.

Quick Start # Install via Homebrew (macOS/Linux) brew tap regent-vcs/tap brew install regent

# Or via Go go install github.com/regent-vcs/regent/cmd/rgt@latest

# Initialize in your project cd your-project rgt init

# Work with Claude Code normally (every tool call is tracked)

# See what happened rgt log rgt blame src/file.go:42 That's it. Your agent activity is now auditable.

What You Get See what your agent actually did $ rgt log

Step a1b2c3d | 2 min ago | Tool: Edit │ File: src/handler.go │ Added error handling to request handler │ + 5 lines, - 2 lines

Step d4e5f6g | 5 min ago | Tool: Write │ File: tests/handler_test.go │ Created unit tests for handler │ + 23 lines

Step f8g9h0i | 8 min ago | Tool: Bash │ Command: go mod tidy │ Cleaned up dependencies Blame: which prompt wrote this line? $ rgt blame src/handler.go:42

Line 42: func handleRequest(w http.ResponseWriter, r *http.Request) {

Step: a1b2c3d4e5f6 Session: claude-20260502-143021 Tool: Edit Prompt: "Add error handling to the request handler" Track multiple concurrent sessions $ rgt sessions

Active Sessions: claude-20260502-143021 | 3 steps | Last: 2 min ago claude-20260502-091534 | 7 steps

| Last: 2 hours ago

$ rgt log --session claude-20260502-143021 # Filter history by session See full context for any change $ rgt show a1b2c3d

Step a1b2c3d4e5f6 Parent: d4e5f6g7h8i9 Session: claude-20260502-143021 Time: 2026-05-02 14:30:21

Tool: Edit File: src/handler.go

Changes: + func handleRequest(w http.ResponseWriter, r *http.Request) { + if r.Method != "GET" { + http.Error(w, "Method not allowed", 405) + return + } - func handleRequest(w http.ResponseWriter, r *http.Request) {

Conversation: User: "Add error handling to reject non-GET requests" Assistant: "I'll add method validation to the handler..."

Why This Exists The problem: AI agents have no version control of their own. You know this pain:

"It was working five minutes ago" "Why did you change that file?" "Go back to before the refactor" /compact and pray Copy-pasting code into a fresh chat

The solution: Three primitives that should already exist:

rgt log — what did this session do? rgt blame — which prompt wrote this line? rgt rewind — restore to any previous step (coming soon)

We gave agents write access to our codebases. We did not give ourselves git for it. re_gent fixes that.

How It Works re_gent stores agent activity in .regent/ (like .git/): .regent/ ├── objects/ # Content-addressed blobs (BLAKE3) ├── refs/ # Session pointers (one per agent) ├── index.db # SQLite query index └── config.toml

Every tool call creates a Step: Step {

From VS Code Marketplace (Coming Soon) # Search for "re_gent Blame"

# 3. From source (Development) git clone https://github.com/regent-vcs/vscode-regent cd vscode-regent npm install && npm run compile # Press F5 in VS Code to launch Extension Development Host Features:

Inline blame annotations showing which step modified each line Hover tooltips with full step context (timestamp, tool name, arguments) Session timeline view in the sidebar One-click access to conversation history Direct SQLite integration—no subprocess overhead

Requirements: re_gent CLI must be installed and rgt init run in your project. View Extension Docs →

Commands Available Now:

Command Description

rgt init Initialize .regent/ in current directory

rgt log Show step history (supports --session, -n, --since)

rgt sessions List all active sessions

rgt status Show current repository state

rgt show <step> Display full context for a step (tool call + conversation)

rgt blame <path>[:<line>] Show per-line provenance for a file

rgt cat <hash> Inspect any object by hash (debug)

rgt version Print version information

rgt completion Generate shell completion scripts

Coming Soon:

Command Description

rgt rewind <step> Non-destructive time-travel

rgt gc Garbage collection

rgt fork <step> Create a new session from a step

Features

Content-Addressed Storage — BLAKE3 hashing, automatic deduplication Fast Queries — SQLite index, sub-10ms lookups Per-Session DAG — Concurrent agents, no conflicts Conversation Tracking — Survives /compact and /clear Hook-Driven — Transparent Claude Code integration Concurrency-Safe — CAS refs,