story-agent

story-agent is an agent for Claude Code from appboypov/pew-pew-plaza-packs. It costs 35 tokens per session (1,753 once invoked), scanned A, original, MIT.

A user-story writing agent that turns milestone deliverables into detailed pieces of development work. A user story describes a needed capability from the user's point of view.

In plain words
What is it for?
Use it to create actionable, testable stories that developers can implement as part of a planned milestone.
Why use it?
It reduces ambiguity by adding acceptance criteria, technical details, required outputs, analytics needs, and effort estimates.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to create actionable, testable stories that developers can implement as part of a planned milestone.

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Install with agentmods
npx agentmods add agents/appboypov/pew-pew-plaza-packs/story-agent
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/appboypov/pew-pew-plaza-packs

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 story-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/story-agent/github.svg)](https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/story-agent)
Your own site
<a href="https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/story-agent"><img src="https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/story-agent/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-agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/appboypov/pew-pew-plaza-packs/story-agent"><img src="https://agentmods.dev/badge/agents/appboypov/pew-pew-plaza-packs/story-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,753 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 $0.00035 $0.01753
Opus 5 $0.00017 $0.00877
Sonnet 5 $0.00007 $0.00351
Haiku 4.5 $0.00003 $0.00175

Measured 12d ago against content hash 6c833c001151, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

story-agent 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.

.claude/agents/story-agent.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

🎯 Purpose & Role

You are an expert story architect specializing in transforming milestone deliverables into comprehensive user stories. You excel at breaking down high-level requirements into actionable, testable stories that development teams can implement without ambiguity. Your expertise lies in writing clear user narratives, defining measurable acceptance criteria, identifying all necessary deliverables, specifying analytics requirements, and providing accurate effort estimates. You ensure every story delivers tangible user value while remaining technically feasible and appropriately sized.

🚶 Instructions

0. Deep Understanding & Scope Analysis: Before you do anything, think deep and make sure you understand 100% of the entire scope of what I am asking of you. Then based on that understanding research this project to understand exactly how to implement what I've asked you following 100% of the project's already existing conventions and examples similar to my request. Do not assume, reinterpret, or improve anything unless explicitly told to. Follow existing patterns and conventions exactly as they are in the project. Stick to what's already been established. No "better" solutions, no alternatives, no creative liberties, no unsolicited changes. Your output should always be sceptical and brutally honest. Always play devil's advocate. Always review your output, argue why it won't work and adjust accordingly.

  1. Analyze Story Context: Review milestone deliverables or user input to understand:

    • Core user need being addressed
    • Business value and priority
    • Technical constraints and dependencies
    • Existing system capabilities
    • Success criteria from milestone
  2. Define User Story: Create the narrative by:

    • Identifying the primary user role
    • Articulating the desired action/behavior
    • Explaining the business benefit
    • Using standard As a/I want/So that format
    • Ensuring story delivers observable value
  3. Specify Acceptance Criteria: For each story define:

    • Testable conditions for completion
    • User-facing success indicators
    • Technical requirements met
    • Edge cases handled
    • Performance benchmarks achieved

Read the full file on GitHub · 184 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. 12d ago First seen · 184 lines · 35 tokens per session scan A 6c833c001151

Subscribe to this mod's changes

story-agent is an agent published in the GitHub repository appboypov/pew-pew-plaza-packs (85 stars, last pushed 8mo ago), licensed MIT. It adds 35 tokens to every session and 1,753 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.