pdd

pdd is a skill for Claude Code, Codex from brazil-bench/pourpoise. It costs 76 tokens per session (3,333 once invoked), scanned A, original, Apache-2.0.

A planning method that turns a rough software idea into a detailed design, implementation plan, and task list. It uses prompts, clarification, and research to refine the idea.

In plain words
What is it for?
Planning a project from an initial idea and saving the resulting design and tasks in a project directory.
Why use it?
It reduces the risk of starting development with unclear requirements or missing decisions.

Skill for Claude CodeCodex

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

Good fit Planning a project from an initial idea and saving the resulting design and tasks in a project directory.

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Install with agentmods
npx agentmods add skills/brazil-bench/pourpoise/pdd
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 brazil-bench/pourpoise --skill pdd
Clone the repo
git clone --depth 1 https://github.com/brazil-bench/pourpoise

Made for: Claude Code, Codex.

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 pdd

README.md
[![agentmods](https://agentmods.dev/badge/skills/brazil-bench/pourpoise/pdd/github.svg)](https://agentmods.dev/skills/brazil-bench/pourpoise/pdd)
Your own site
<a href="https://agentmods.dev/skills/brazil-bench/pourpoise/pdd"><img src="https://agentmods.dev/badge/skills/brazil-bench/pourpoise/pdd/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 pdd

Your own site · 80×15
<a href="https://agentmods.dev/skills/brazil-bench/pourpoise/pdd"><img src="https://agentmods.dev/badge/skills/brazil-bench/pourpoise/pdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,333 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 $0.00076 $0.03333
Opus 5 $0.00038 $0.01666
Sonnet 5 $0.00015 $0.00667
Haiku 4.5 $0.00008 $0.00333

Measured 11d ago against content hash 1e5b1d978a1e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

pdd 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.

skills/pdd/SKILL.md · 295 lines

How it starts

The opening of the file, as written. The whole thing — 295 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Prompt-Driven Development

Overview

This sop guides you through the process of transforming a rough idea into a detailed design document with an implementation plan and todo list. It follows the Prompt-Driven Development methodology to systematically refine your idea, conduct necessary research, create a comprehensive design, and develop an actionable implementation plan. The process is designed to be iterative, allowing movement between requirements clarification and research as needed.

Parameters

  • rough_idea (required): The initial concept or idea you want to develop into a detailed design
  • project_dir (optional, default: ".sop/planning"): The base directory where all project files will be stored

Constraints for parameter acquisition:

  • You MUST ask for all required parameters upfront in a single prompt rather than one at a time
  • You MUST support multiple input methods including:
    • Direct input: Text provided directly in the conversation
    • File path: Path to a local file containing the rough idea
    • URL: Link to an internal resource (e.g., Quip doc, wiki page)
    • Other methods: You SHOULD be open to other ways the user might want to provide the idea
  • You MUST use appropriate tools to access content based on the input method
  • You MUST confirm successful acquisition of all parameters before proceeding
  • You SHOULD save the acquired rough idea to a consistent location for use in subsequent steps
  • You MUST NOT overwrite the existing project directory because this could destroy previous work and cause data loss
  • You MUST ask for project_dir if it is not given and default ".sop/planning" directory already exist and has contents from previous iteration

Steps

1. Create Project Structure

Set up a directory structure to organize all artifacts created during the process.

Constraints:

  • You MUST create the specified project directory if it doesn't already exist
  • You MUST create the following files:
    • {project_dir}/rough-idea.md (containing the provided rough idea)
    • {project_dir}/idea-honing.md (for requirements clarification)
  • You MUST create the following subdirectories:
    • {project_dir}/research/ (directory for research notes)
    • {project_dir}/design/ (directory for design documents)
    • {project_dir}/implementation/ (directory for implementation plans)
  • You MUST notify the user when the structure has been created
  • You MUST prompt the user to add all project files to Q's context using the command: /context add {project_dir}/**/*.md
  • You MUST explain that this will ensure all project files remain in context throughout the process

Read the full file on GitHub · 295 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. 11d ago First seen · 295 lines · 76 tokens per session scan A 1e5b1d978a1e

Subscribe to this mod's changes

pdd is a skill published in the GitHub repository brazil-bench/pourpoise (11 stars, last pushed 8mo ago), licensed Apache-2.0. It adds 76 tokens to every session and 3,333 once invoked, about $0.0004 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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