exploring-in-parallel

Research

Parallelizes codebase exploration and research by launching multiple subagents simultaneously. Use when exploring codebases, researching questions, investigating bugs, gathering context from multiple sources, or any task requiring search across multiple files, patterns, or directories. Triggers on research, exploration, debugging, "why does this happen", "how does X work", or multi-file investigation.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/exploring-in-parallel/SKILL.md

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Exploring in Parallel

Overview

Parallelize exploration aggressively. When researching or exploring, launch multiple subagents simultaneously instead of sequential searches. This reduces wall-clock time proportionally to the number of parallel agents.

How to Parallelize

Use the Task tool with subagent_type=Explore. The key is to send multiple Task calls in a single message — this launches them concurrently.

Each subagent gets:

subagent_type: "Explore" for codebase searches, "general-purpose" for web research
description: Short label (3-5 words)
prompt: Detailed, self-contained search instructions

Example — investigating how auth works:

Send in ONE message:

Task 1: { subagent_type: "Explore", description: "Find auth middleware", prompt: "Search for authentication middleware, auth guards, session validation..." }
Task 2: { subagent_type: "Explore", description: "Find login endpoints", prompt: "Search for login routes, /auth endpoints, credential handling..." }
Task 3: { subagent_type: "Explore", description: "Find auth config", prompt: "Search for JWT config, OAuth settings, auth environment variables..." }

All three run simultaneously. When results return, synthesize findings into a coherent answer.

When to Parallelize

Situation	Action
Searching for multiple patterns	One subagent per pattern
Exploring different directories	One subagent per area
Investigating related questions	One subagent per question
Checking multiple files (>3)	Parallel reads
Web research on multiple topics	One subagent per topic

When NOT to Parallelize

Dependent searches: Second search needs results from first
Single specific file: Just use Read directly
Simple grep: One pattern, one location — use Grep directly
Known target: Know exact file/function — use Glob/Read directly

Red Flags — STOP and Parallelize

Thought	Action
"Let me search for X first, then Y"	Launch both simultaneously
"I'll check this file, then that one"	Parallel reads if >3 files
"First explore area A, then B"	Parallel subagents per area
"Let me see what this returns before..."	Usually can parallelize anyway

After Results Return

Don't just dump raw results. Synthesize:

Identify overlapping findings across agents
Resolve contradictions
Present a unified answer with file references
Note any gaps that need follow-up