Subagent

Crash Analyzer

Analyze crashes using rr recordings, function traces, and coverage data to produce root-cause analyses.

Type: Subagent
Repository: gadievron/raptor
GitHub stars: 3.8k
License: Not declared
Repo last updated: Sep 27, 2026
Source file: .claude/agents/crash-analyzer-agent.md
Model: inherit

What Crash Analyzer is

Crash Analyzer is a subagent published in the gadievron/raptor repository on GitHub, which has about 3.8k stars. The repository describes itself as: “Raptor turns Claude Code into a general-purpose AI offensive/defensive security agent. By using Claude.md and creating rules, sub-agents, and skills, and orchestrating security tool usage, we configure the agent for adversarial thinking, and perform research or attack/defense operations.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Crash Analyzer and get back a compact result.

It is set up to use these tools: Read, Write, Edit, Bash, Grep, Glob. Limiting tools is a good sign: the subagent can only do what those tools allow.

How to install Crash Analyzer

Claude Code

Download crash-analyzer-agent.md from the repository.
Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

The repository does not declare an open-source license, so we list only the outline of the file here. Read the full text on GitHub.

Required Format for Each Step in Pointer Chain
Step N: [Description]
MANDATORY SELF-CHECK Before Returning

Open crash-analyzer-agent.md on GitHub

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Crash Analyzer?

Crash Analyzer is a subagent for Claude Code and Claude Cowork from the gadievron/raptor repository on GitHub. Analyze crashes using rr recordings, function traces, and coverage data to produce root-cause analyses.

How do I install Crash Analyzer in Claude Code?

Download crash-analyzer-agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Crash Analyzer in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Crash Analyzer safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

Similar resources

Browse all skills, subagents, and plugins →

Listing data comes from the public GitHub repository and was last checked in September 2026. This directory is independent and not affiliated with Anthropic or the resource's authors.