Story Refiner

Story Refiner is a skill for Claude Code, Codex from bobchao/pm-skills-rfp-to-stories. It costs 41 tokens per session (3,533 once invoked), scanned A, original, MIT.

A tool that reviews user stories, short descriptions of software work, and rewrites ones with clear quality problems. It checks them from developer, tester, and product-owner viewpoints.

In plain words
What is it for?
Use it to improve technical feasibility, testability, acceptance criteria, and explanation of user value.
Why use it?
It turns vague or incomplete stories into clearer requirements instead of only pointing out their weaknesses.

Skill for Claude CodeCodex

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

Good fit Use it to improve technical feasibility, testability, acceptance criteria, and explanation of user value.

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Install with agentmods
npx agentmods add skills/bobchao/pm-skills-rfp-to-stories/story-refiner
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 bobchao/pm-skills-rfp-to-stories --skill story-refiner
Clone the repo
git clone --depth 1 https://github.com/bobchao/pm-skills-rfp-to-stories

Made for: Claude Code, Codex.

Its marketplace also offers this one on its own, as the plugin story-refiner/plugin install story-refiner after adding the marketplace above.

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 Story Refiner

README.md
[![agentmods](https://agentmods.dev/badge/skills/bobchao/pm-skills-rfp-to-stories/story-refiner/github.svg)](https://agentmods.dev/skills/bobchao/pm-skills-rfp-to-stories/story-refiner)
Your own site
<a href="https://agentmods.dev/skills/bobchao/pm-skills-rfp-to-stories/story-refiner"><img src="https://agentmods.dev/badge/skills/bobchao/pm-skills-rfp-to-stories/story-refiner/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 Story Refiner

Your own site · 80×15
<a href="https://agentmods.dev/skills/bobchao/pm-skills-rfp-to-stories/story-refiner"><img src="https://agentmods.dev/badge/skills/bobchao/pm-skills-rfp-to-stories/story-refiner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,533 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 $0.00041 $0.03533
Opus 5 $0.00020 $0.01767
Sonnet 5 $0.00008 $0.00707
Haiku 4.5 $0.00004 $0.00353

Measured 12d ago against content hash cf63ad510411, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

Story Refiner 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 12d 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.

story-refiner/SKILL.md · 470 lines

How it starts

The opening of the file, as written. The whole thing — 470 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Story Refiner Skill

Language Preference

Default: Respond in the same language as the user's input or as explicitly requested by the user.

If the user specifies a preferred language (e.g., "請用中文回答", "Reply in Japanese"), use that language for all outputs. Otherwise, match the language of the provided Stories.


Role Definition

You simultaneously play three roles to review User Stories:

  1. Senior Developer: Evaluates technical feasibility and estimation clarity
  2. QA Engineer: Evaluates testability and acceptance criteria clarity
  3. Product Stakeholder: Evaluates requirement coverage and value clarity

Core Principles

Correction Over Reporting

  • Don't just point out problems, directly fix them
  • Every flagged issue must have a corresponding improved version
  • Humans only need final confirmation, not manual correction

Conservative Correction

  • Only correct Stories with "obvious problems"
  • Don't correct for the sake of correcting
  • Stories that already pass don't need changes

Transparent Annotation

  • Clearly explain why corrections were made
  • Provide original vs. improved version comparison
  • Let humans choose to accept or keep original version

Input Format

This Skill accepts the following inputs:

  1. Story Writer output (recommended)
  2. Any format User Stories list
  3. Original RFP + Stories (can cross-reference coverage)

Evaluation Criteria Reference

All scoring and evaluation must follow the standards defined in references/evaluation-criteria.md.

This document defines:

  • Three scoring dimensions (Development Clarity, Testability, Value Clarity)
  • Detailed scoring criteria for each dimension (1-5 points)
  • Specific checkpoints and common deduction patterns
  • Final score calculation method

Important: Both Quick Scan (Phase 1) and Detailed Evaluation (Phase 2) use these same criteria, with different levels of depth.


Evaluation Flow

Phase 1: Quick Scan

Score each Story initially (1-5 points) using the three dimensions from references/evaluation-criteria.md:

Read the full file on GitHub · 470 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 12d ago First seen · 470 lines · 41 tokens per session scan A cf63ad510411

Subscribe to this mod's changes

Story Refiner is a skill published in the GitHub repository bobchao/pm-skills-rfp-to-stories (28 stars, last pushed 8mo ago), licensed MIT. It adds 41 tokens to every session and 3,533 once invoked, about $0.0002 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.

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