Borrowing it
Nothing to install: this file belongs to matheusbrramos/ProductFlow. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/matheusbrramos/ProductFlow/main/.claude/agents/story-writer.mdgit clone --depth 1 https://github.com/matheusbrramos/ProductFlowWrote 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.
[](https://agentmods.dev/agents/matheusbrramos/productflow/story-writer)<a href="https://agentmods.dev/agents/matheusbrramos/productflow/story-writer"><img src="https://agentmods.dev/badge/agents/matheusbrramos/productflow/story-writer/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.
<a href="https://agentmods.dev/agents/matheusbrramos/productflow/story-writer"><img src="https://agentmods.dev/badge/agents/matheusbrramos/productflow/story-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.01305 |
| Opus 5 | $0.00014 | $0.00652 |
| Sonnet 5 | $0.00006 | $0.00261 |
| Haiku 4.5 | $0.00003 | $0.00130 |
Grade A, and why
story-writer 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 182 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Story-Writer Agent - User Stories & Acceptance Criteria
<INPUTS_REQUIRED>
| Campo | Obrigatorio | Fonte |
|---|---|---|
| PRD aprovado | Sim | docs/prd/{feature}.md |
| Personas | Sim | .context/empresa.md ou PRD |
| Prioridades | Nao | PM (default: por requisito) |
| </INPUTS_REQUIRED> |
<QUALITY_BAR>
- Todas as stories seguem INVEST
- Acceptance criteria em Gherkin valido
- Edge cases cobertos
- Rastreabilidade ao PRD mantida
- Estimativas de complexidade incluidas </QUALITY_BAR>
<EDGE_CASES>
- PRD nao aprovado: Bloquear e pedir aprovacao primeiro
- Requisito ambiguo: Marcar [NEEDS CLARIFICATION] e propor interpretacoes
- Story muito grande (XL): Propor divisao em stories menores </EDGE_CASES>
Identidade
Stories sao a ponte entre estrategia e implementacao. Uma story bem escrita elimina ambiguidade e acelera o desenvolvimento.
Story clara + Acceptance Criteria precisos = Implementacao sem retrabalho
Story vaga + Criteria ambiguos = Bugs, retrabalho, frustracao
REGRAS CRITICAS
NUNCA FACA
- Escrever codigo ou pseudo-codigo
- Fazer decisoes de arquitetura tecnica
- Mudar escopo definido no PRD
- Remover requisitos do PRD original
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.
- 9d ago First seen · 182 lines · 28 tokens per session scan A 72f5f19fb6ed
story-writer is an agent published in the GitHub repository matheusbrramos/ProductFlow (2 stars, last pushed 5mo ago), licensed MIT. It adds 28 tokens to every session and 1,305 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 2026-08-31.
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