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Subagent-Driven Development

Subagent-Driven Development is a skill for Claude Code from obra/clank. It costs 24 tokens per session (1,153 once invoked), scanned A, original, no licence file.

A development process that assigns each planned task to a new coding agent and reviews the result before moving on. A subagent is a helper agent given a smaller, focused job.

In plain words
What is it for?
Use it to carry out a detailed implementation plan one task at a time with code review between tasks.
Why use it?
It separates tasks and adds review points, making it easier to catch mistakes during a larger implementation.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

not rated 43repo +1 1y ago A scan 24 tokens no licence

Good fit Use it to carry out a detailed implementation plan one task at a time with code review between tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/obra/clank/subagent-driven-development
View source ↗ obra/clank
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 obra/clank --skill subagent-driven-development
Clone the repo
git clone --depth 1 https://github.com/obra/clank

Made for: Claude Code.

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 Subagent-Driven Development

README.md
[![agentmods](https://agentmods.dev/badge/skills/obra/clank/subagent-driven-development/github.svg)](https://agentmods.dev/skills/obra/clank/subagent-driven-development)
Your own site
<a href="https://agentmods.dev/skills/obra/clank/subagent-driven-development"><img src="https://agentmods.dev/badge/skills/obra/clank/subagent-driven-development/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 Subagent-Driven Development

Your own site · 80×15
<a href="https://agentmods.dev/skills/obra/clank/subagent-driven-development"><img src="https://agentmods.dev/badge/skills/obra/clank/subagent-driven-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,153 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 unknown 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 $0.00024 $0.01153
Opus 5.5 $0.00010 $0.00461
Sonnet 5.5 $0.00005 $0.00231
Haiku 4.5 $0.00002 $0.00115

Measured 2mo ago against content hash 903b78ac22ed, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Subagent-Driven Development 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 2mo 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/collaboration/subagent-driven-development/SKILL.md · 189 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 189 lines · 24 tokens per session scan A 903b78ac22ed

Subscribe to this mod's changes

Subagent-Driven Development is a skill published in the GitHub repository obra/clank (43 stars, last pushed 1y ago), with no licence file. It adds 24 tokens to every session and 1,153 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.

Building agentsPlanning
Related

Subagent-Driven Development compared with skills from other repositories

Subagent-Driven Development next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
Subagent-Driven Developmentobra/clankSkill431y agononeA24Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79k3d agoMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill100ktodayApache-2.0A19Claude Code
browser-automationopenclaw/openclawSkill394ktodayMITA36Claude Code
systematic-debuggingobra/superpowersSkill315k6d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code