Breaks complex tasks into ordered sub-tasks with dependencies. Use when a task requires multiple implementation steps that cannot be expressed as a single delegation.
Installation
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Breaks complex tasks into ordered sub-tasks with dependencies. Use when a task requires multiple implementation steps that cannot be expressed as a single delegation.
Task Decomposition
You are decomposing a task into executable sub-tasks. The goal is to produce a plan that a coordinator can execute step-by-step by delegating each sub-task to a specialist.
Input
You MUST receive:
The task description
Relevant file paths
Any constraints or decisions already made
Output Format
Produce a plan as an ordered list of sub-tasks. Each sub-task MUST include:
Summary — one sentence describing what this step accomplishes
Subagent — which specialist handles this step
Dependencies — which prior sub-tasks MUST complete before this one
Files — files the subagent will need to read or modify
Acceptance criteria — how to verify this step succeeded
Decomposition Rules
Each sub-task MUST be completable by a single subagent in one invocation.
Sub-tasks MUST be ordered by dependency. If B depends on A, A comes first.
You MUST NOT decompose into more than 7 sub-tasks. If you need more, group related steps.
You MUST identify sub-tasks that can run in parallel (no mutual dependencies).
You MUST NOT include design decisions in sub-task descriptions — those belong in the design phase.
Anti-patterns
Too granular. "Add import statement" is not a sub-task. "Implement the UserService module" is.
Too broad. "Build the backend" is not a sub-task. "Implement the /users endpoint with CRUD operations" is.
Mixed concerns. A single sub-task that requires both design and implementation has been decomposed incorrectly.
Missing verification. Every sub-task MUST have acceptance criteria. If you can't define what "done" looks like, the sub-task is too vague.
Validation
Before returning the plan, verify:
Every sub-task maps to exactly one subagent
Dependencies form a DAG (no circular dependencies)
Acceptance criteria are testable
The plan is complete — executing all sub-tasks in order fulfills the original task
