split-stories

split-stories is a command for Claude Code from josemerca/mercadona-user-story-toolkit. It costs 15 tokens per session (468 once invoked), scanned A, original, MIT.

A command for finding user stories that are too large and suggesting smaller, incremental stories. Incremental means delivering the work in useful pieces over time.

In plain words
What is it for?
It is for analyzing stories from commands or an issue tracker, identifying language-based warning signs, and proposing alternative sets of smaller stories.
Why use it?
It helps break broad stories into smaller deliverables while showing the trade-offs of different ways to split them.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the mercadona-user-story-toolkit plugin — 8 skills, 11 commands shipped together

Good fit It is for analyzing stories from commands or an issue tracker, identifying language-based warning signs, and proposing alternative sets of smaller stories.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/josemerca/mercadona-user-story-toolkit/split-stories
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.

Clone the repo
git clone --depth 1 https://github.com/josemerca/mercadona-user-story-toolkit

Made for: Claude Code.

Or install mercadona-user-story-toolkit, the plugin that ships this one along with the rest of its 8 skills, 11 commands.

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 split-stories

README.md
[![agentmods](https://agentmods.dev/badge/commands/josemerca/mercadona-user-story-toolkit/split-stories/github.svg)](https://agentmods.dev/commands/josemerca/mercadona-user-story-toolkit/split-stories)
Your own site
<a href="https://agentmods.dev/commands/josemerca/mercadona-user-story-toolkit/split-stories"><img src="https://agentmods.dev/badge/commands/josemerca/mercadona-user-story-toolkit/split-stories/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 split-stories

Your own site · 80×15
<a href="https://agentmods.dev/commands/josemerca/mercadona-user-story-toolkit/split-stories"><img src="https://agentmods.dev/badge/commands/josemerca/mercadona-user-story-toolkit/split-stories.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 468 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 $0.00015 $0.00468
Opus 5 $0.00008 $0.00234
Sonnet 5 $0.00003 $0.00094
Haiku 4.5 $0.00002 $0.00047

Measured 11d ago against content hash e8a65a09a134, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

split-stories 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 11d 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.

commands/split-stories.md · 36 lines

What it actually says

Paso 0 (obligatorio): Cargar ground-rules. Antes de proceder, lee shared-config.md y aplica:

  • §Filosofía del Plugin — modo copiloto, NO inventar, preguntar antes de generar
  • §Estilo de Escritura — frases ≤30 palabras, sin adjetivos sin datos, NUNCA inventar métricas
  • §Antipatrones Compartidos — los 7 antipatrones a detectar

Si no puedes leer el fichero, detén la ejecución y reporta el problema.

Analiza stories para detectar red flags lingüísticos y propone splits incrementales.

Input necesario: User stories a analizar (de /stories, /validate-stories o de tu issue tracker).

Proceso:

  1. Leer el SKILL.md de skills/story-splitting/
  2. Para cada story:
    • Escanear las 6 categorías de red flags lingüísticos (scripts/redflags.py)
    • Generar 2-3 propuestas alternativas con técnicas distintas (cast-wide). Ej: una vertical por flujo de usuario, una por capacidad, una por valor mínimo viable.
    • Para cada alternativa, presentar: técnica aplicada, splits resultantes, trade-offs (qué se entrega antes / qué se aprende / qué riesgo cubre)
    • CHECKPOINT: preguntar al usuario cuál prefiere antes de detallar splits
    • Detallar los 3-5 splits de la opción elegida
  3. Generar reporte con:
    • Diagnóstico de red flags
    • Las alternativas exploradas (con la elegida marcada)
    • Splits propuestos (en formato User Story)
    • Orden de entrega recomendado
    • Impacto esperado en Dim 6 (Survivable Experiment)

Output: Stories divididas en incrementos pequeños, seguros y valiosos, listas para tu issue tracker.

Nota: Si las stories ya tienen Score Dim 6 ≥8, el splitting es opcional. Se recomienda ejecutar siempre después de /validate-stories para asegurar granularidad óptima.

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. 11d ago First seen · 36 lines · 15 tokens per session scan A e8a65a09a134

Subscribe to this mod's changes

split-stories is a command published in the GitHub repository josemerca/mercadona-user-story-toolkit (25 stars, last pushed 4mo ago), licensed MIT. It adds 15 tokens to every session and 468 once invoked, about $0.0001 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 2026-08-30.