re_gent

What is re_gent?

re_gent, also written Regent, is an open-source command-line tool that adds an audit trail for AI coding agents. After you run rgt init in a project, it hooks into Claude Code, OpenAI Codex CLI and OpenCode and records every tool-using turn as a Step stored in a .regent folder, much like git stores history. Commands such as rgt log, rgt show and rgt blame let you see what a session did, inspect the conversation behind a change and trace a line back to the prompt that produced it. Sessions are tracked separately, and history survives /compact and /clear. An optional VS Code extension shows inline blame annotations. It is released under the Apache License 2.0 and is meant to complement git, not replace it. Cursor, Cline and Continue are listed as planned.

Use cases

• Audit what an AI agent changed
• Trace a line to its originating prompt
• Debug a bad AI refactor
• Track concurrent agent sessions
• Inspect conversation behind a code change

Who it's for

• Software developers
• Engineering leads
• Open-source contributors

Why use re_gent

• You can answer why a file changed by reading the prompt and conversation behind it.
• Hooks configure themselves on init, so no manual setup is needed.
• Separate session refs keep concurrent agents from blurring together.
• It is open source under Apache 2.0 and free to use.
• History persists after context is compacted or cleared in the agent.

re_gent features

• Automatic capture of every agent turn
• rgt log for step history
• rgt blame to find the prompt behind a line
• rgt show for full step context
• Per-session history that survives /compact and /clear
• Content-addressed storage with BLAKE3 hashing
• SQLite index for fast queries
• VS Code extension with inline blame
• .regentignore support

re_gent integrations

• Claude Code
• OpenAI Codex CLI
• OpenCode
• VS Code

How to get started with re_gent

1. Install with Homebrew or go install, or build from source.
2. Run rgt init in your project so hooks are set up for your agent.
3. Work with Claude Code, Codex CLI or OpenCode as usual while steps are recorded.
4. Use rgt log to review activity and rgt show to open a step.
5. Run rgt blame on a file and line to see the prompt that wrote it.

re_gent limitations

• Cursor, Cline and Continue are listed as planned, not supported
• Non-destructive rewind and fork operations are on the roadmap
• Works alongside git and does not replace it

re_gent pricing

re_gent is open source, so you can use and self-host it for free.

Prices can change and may vary by country or exclude tax. Check the official pricing page.

re_gent alternatives

The main re_gent alternatives listed on Debuly are Langfuse, Poirot, ContextStream, Kilo Code, Qodo and Token Optimizer. The table compares pricing and platforms; order is A–Z.

1. 

   ContextStream

   Shared project memory, code search and agent coordination for AI coding tools, connected through MCP and a browser workspace.

   CodingDeveloper platformsAutomation and agents
   FreemiumVisit ContextStream (official site)
2. 

   Kilo Code

   Open-source AI coding agent for VS Code, JetBrains and the CLI, with 500+ models, bring-your-own-key and team plans.

   CodingDeveloper platformsAutomation and agents
   FreemiumVisit Kilo Code (official site)
3. 

   Langfuse

   Open-source LLM observability and evaluation platform for tracing agents, managing prompts and scoring outputs.

   Developer platformsAutomation and agentsCoding
   FreemiumVisit Langfuse (official site)
4. 

   Poirot

   Free, open-source macOS app that shows what Claude Code did in each session, with usage analytics and cost views.

   CodingDeveloper platformsProductivity
   Open sourceVisit Poirot (official site)
5. 

   Qodo

   AI code review and governance for teams shipping agent-written code, with pull request review, IDE skills and rules enforcement.

   CodingAutomation and agentsDeveloper platforms
   Free trialVisit Qodo (official site)
6. 

   Token Optimizer

   Source-available plugin that audits wasted context in Claude Code and other coding agents, compresses output and saves session checkpoints.

   CodingDeveloper platforms
   FreeVisit Token Optimizer (official site)

re_gent FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from avatars.githubusercontent.com · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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