---
name: GSD Debug
slug: gsd-debug
category: Quality
description: GSD Debug systematically debugs issues using the scientific method with subagent isolation, maintaining persistent state across context resets. It orchestrates a debugger subagent and session manager, supports a diagnose-only mode, and lets users list, check status, or continue debug sessions.
github: "https://github.com/open-gsd/gsd-core/tree/next/skills/gsd-debug"
language: JavaScript
stars: 8257
forks: 573
install: "npx degit https://github.com/open-gsd/gsd-core/tree/next/skills/gsd-debug ~/.claude/skills/gsd-debug"
installs_to: ~/.claude/skills/gsd-debug
source_path: skills/gsd-debug/SKILL.md
collection_size: 25
category_size: 1354
collection_url: "https://dirskills.com/collections/open-gsd/gsd-core"
added: 2026-08-15T06:51:01.243Z
last_synced: 2026-08-15T06:51:01.243Z
canonical_url: "https://dirskills.com/skills/gsd-debug"
---

# GSD Debug

GSD Debug systematically debugs issues using the scientific method with subagent isolation, maintaining persistent state across context resets. It orchestrates a debugger subagent and session manager, supports a diagnose-only mode, and lets users list, check status, or continue debug sessions.

**Install:**

```bash
npx degit https://github.com/open-gsd/gsd-core/tree/next/skills/gsd-debug ~/.claude/skills/gsd-debug
```

## README

<objective>
Debug issues using scientific method with subagent isolation.

**Orchestrator role:** Gather symptoms, spawn gsd-debugger agent, handle checkpoints, spawn continuations.

**Flags:**
- `--diagnose` — Diagnose only. Returns a Root Cause Report without applying a fix.

**Subcommands:** `list` · `status <slug>` · `continue <slug>`
</objective>

<available_agent_types>
Valid GSD subagent types (use exact names — do not fall back to 'general-purpose'):
- gsd-debug-session-manager — manages debug checkpoint/continuation loop in isolated context
- gsd-debugger — investigates bugs using scientific method
</available_agent_types>

<execution_context>
@~/.claude/gsd-core/workflows/debug.md
</execution_context>

<context>
User's input: $ARGUMENTS

Parse subcommands and flags from $ARGUMENTS BEFORE the active-session check:
- If $ARGUMENTS starts with "list": SUBCMD=list, no further args
- If $ARGUMENTS starts with "status ": SUBCMD=status, SLUG=remainder (trim whitespace)
- If $ARGUMENTS starts with "continue ": SUBCMD=continue, SLUG=remainder (trim whitespace)
- If $ARGUMENTS contains `--diagnose`: SUBCMD=debug, diagnose_only=true, strip `--diagnose` from description
- Otherwise: SUBCMD=debug, diagnose_only=false

Check for active sessions (used for non-list/status/continue flows):
```bash
ls .planning/debug/*.md 2>/dev/null | grep -v resolved | head -5
```
</context>

<process>
Execute end-to-end.
</process>