# rr Reverse Debugger

> Use this tool when you need to investigate hard-to-reproduce bugs and race conditions in your code, as it provides reverse debugging capabilities to record and replay program executions with full control. It solves problems related to debugging complex issues by offering features like breakpoint management, watchpoints, and bidirectional execution. With inputs of recorded program executions and outputs of detailed debugging information, it integrates with GDB to provide a powerful debugging interface.

Canonical page: https://skillsregistry.net/skills/karellen-rr-reverse-debugger  
JSON: https://api.skillsregistry.net/v1/skills/karellen-rr-reverse-debugger

## Description

Provides reverse debugging capabilities through Mozilla's rr tool, enabling developers to record program executions and replay them with full bidirectional debugging control. Integrates rr's recording functionality with GDB's machine interface to offer breakpoint management, watchpoints, forward and reverse execution, state inspection, and checkpoint save/restore operations. Particularly valuable for investigating hard-to-reproduce bugs and race conditions.

## Trust

- **Trust score (0–1):** 0.98
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/karellen-rr-reverse-debugger)
- **Repository:** <https://github.com/karellen/karellen-rr-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "karellen-rr-reverse-debugger"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/karellen-rr-reverse-debugger` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/karellen-rr-reverse-debugger/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt