task-decomposition

task-decomposition is a skill for Claude Code, Codex from DevelopersGlobal/ai-agent-skills. It costs 34 tokens per session (659 once invoked), scanned A, original, MIT.

A planning method that splits a large feature or project into small tasks with one clear result and an independent way to check completion.

In plain words
What is it for?
Use it before sizeable features, when work feels overwhelming, or when several people need to work in parallel.
Why use it?
It makes unclear work easier to estimate, parallelise, verify, and undo without putting the whole project at risk.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it before sizeable features, when work feels overwhelming, or when several people need to work in parallel.

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Install with agentmods
npx agentmods add skills/developersglobal/ai-agent-skills/task-decomposition
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add DevelopersGlobal/ai-agent-skills --skill task-decomposition
Clone the repo
git clone --depth 1 https://github.com/DevelopersGlobal/ai-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for task-decomposition

README.md
[![agentmods](https://agentmods.dev/badge/skills/developersglobal/ai-agent-skills/task-decomposition/github.svg)](https://agentmods.dev/skills/developersglobal/ai-agent-skills/task-decomposition)
Your own site
<a href="https://agentmods.dev/skills/developersglobal/ai-agent-skills/task-decomposition"><img src="https://agentmods.dev/badge/skills/developersglobal/ai-agent-skills/task-decomposition/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for task-decomposition

Your own site · 80×15
<a href="https://agentmods.dev/skills/developersglobal/ai-agent-skills/task-decomposition"><img src="https://agentmods.dev/badge/skills/developersglobal/ai-agent-skills/task-decomposition.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 659 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00034 $0.00659
Opus 5.5 $0.00014 $0.00264
Sonnet 5.5 $0.00007 $0.00132
Haiku 4.5 $0.00003 $0.00066

Measured 1mo ago against content hash 7ea286de79e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

task-decomposition scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/task-decomposition/SKILL.md · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Overview

Large tasks fail in large ways. Decomposed tasks fail in small, fixable ways. This skill breaks any feature or project into atomic tasks — each independently implementable, testable, and deployable.

When to Use

  • Before starting any feature that takes more than half a day
  • When a task feels overwhelming or unclear
  • When multiple people need to work in parallel

Process

Step 1: Identify the Deliverable

  1. State what "done" looks like for the whole feature.
  2. List all the things that must be true when it's complete.
  3. Identify dependencies: what must exist before any task can start?

Verify: You can state the full feature goal in 2 sentences.

Step 2: Decompose Into Atomic Tasks

  1. Break the feature into tasks where each task:
    • Can be completed in under 4 hours
    • Has a single, clear output
    • Can be verified independently
    • Can be reverted without breaking other tasks
  2. Each task should be: [verb] [noun] so that [outcome]
    • ✅ "Add rate limiting to /api/login so that brute-force is prevented"
    • ❌ "Work on the login security stuff"

Verify: Every task is under 4 hours. Every task has a clear verify condition.

Step 3: Order and Parallelism

  1. Draw the dependency graph — what blocks what?
  2. Identify tasks that can be done in parallel.
  3. Sequence tasks so integration happens incrementally (not as one big bang at the end).

Verify: The dependency order is clear. No unnecessary sequential dependencies.

Step 4: Estimate and Adjust

  1. For each task, estimate: best case / worst case / expected.
  2. If any task's worst case > 1 day: decompose further.
  3. Total estimate sanity check: does it add up to a reasonable timeline?

Common Rationalizations (and Rebuttals)

Excuse Rebuttal
"I'll figure it out as I go" Decomposition takes 30 minutes. Rework from poor planning takes days.
"It's too complex to break down" Everything can be decomposed. Start with what you know, decompose the rest later.
"The tasks are too granular" Granular tasks ship continuously. Coarse tasks ship never.

Read the full file on GitHub · 75 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 75 lines · 34 tokens per session scan A 7ea286de79e4

Subscribe to this mod's changes

task-decomposition is a skill published in the GitHub repository DevelopersGlobal/ai-agent-skills (215 stars, last pushed 5d ago), licensed MIT. It adds 34 tokens to every session and 659 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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