plan

A planning skill that turns an approved specification or design into small, ordered work items on a story board. A story is a self-contained task that one future developer can implement in one work session or pull request.

In plain words
What is it for?
Breaking features into epics and stories, sizing and ordering the work, recording acceptance criteria, and filing approved tasks through the project’s story workflow.
Why use it?
It prevents large or unclear requests from becoming difficult-to-track development work and keeps dependencies and open decisions visible.

Skill for Claude CodeCodex

Part of the stories plugin — 5 skills, 2 agents shipped together

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.

agentmods
npx agentmods add skills/shousper/claude-kit/plan
Any agent
npx skills add shousper/claude-kit --skill plan
Clone the repo
git clone --depth 1 https://github.com/shousper/claude-kit

Made for: Claude Code, Codex.

Or install stories, the plugin that ships this one along with the rest of its 5 skills, 2 agents.

Per session 156 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,304 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00156 $0.01304
Opus 5 $0.00078 $0.00652
Sonnet 5 $0.00031 $0.00261
Haiku 4.5 $0.00016 $0.00130

Measured 2d ago against content hash f26624551e08, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan 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 2d 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.

plugins/stories/skills/plan/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Story Planning

Turn a spec into board data. Each story file is the complete prompt a future worker — with no memory of this conversation — will implement from. Write for that reader.

Core principle: one story = one context window = one PR. Sizing is the whole game; everything else is bookkeeping.

Process

1. Absorb the source

Read the spec or design in full. Unresolved product decisions go back to your human partner (or kit:brainstorming) — never invent them, and never encode an open question as an acceptance criterion. A genuinely open technical question can become a spike story.

2. Decompose

  • Epics group related stories: file an epic as its own story whose body carries the shared context; children reference it via --epic <id>. Epics are never implemented or closed directly — no cascade.
  • Stories obey the sizing rule. Too big — an "and" in the title, more than one subsystem, more than roughly a day of human work — split it. Two stories that can only ship together — merge them.

3. Draft each story

Field Rule
title Imperative and specific: "Add ×N multiplier gates", not "Gates work"
type feature / bug / chore / spike (projects may extend)
priority P0..P3 — P0 means "the board is blocked without it"
depends_on TRUE sequencing only (producer → consumer of an interface). Preference-ordering kills parallelism
touches Coarse globs of what the story will modify, e.g. src/gates/**. A scheduler hint — conservative, directory-level
exclusive true for sweeping refactors that own the whole repo; use it instead of a giant touches list
gates Omit to accept the type defaults from config; override per story (UI story → add visual). Only names defined in .claude/story-workflow.json
complexity routine (default — omit it) | hard for cross-cutting, ambiguous, or multi-subsystem stories | frontier reserved for the rare story your human partner explicitly wants frontier-model planning on. Proposed here, confirmed by the human at the approval gate

Read the full file on GitHub · 86 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. 2d ago First seen · 86 lines · 156 tokens per session scan A f26624551e08

Subscribe to this mod's changes

plan is a skill published in the GitHub repository shousper/claude-kit (4 stars, last pushed 6d ago), licensed MIT. It adds 156 tokens to every session and 1,304 once invoked, about $0.0008 per session on Opus 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 2026-08-31.

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