Learn why to discuss technical design before implementation

Learn why to discuss technical design before implementation is a skill for Claude Code from Intai/story-flow. It costs 25 tokens per session (1,682 once invoked), scanned A, original, MIT.

An interactive lesson about writing a technical design pull request before implementation. A pull request is a proposed change that teammates review before it becomes part of the codebase.

In plain words
What is it for?
Use it to learn what to include in a design proposal, such as requirements, design analysis, the planned implementation, and areas needing team feedback.
Why use it?
It helps teams agree on an approach early, when changing direction costs less than rewriting completed code.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: names the AskUserQuestion tool.

Part of the junior-flow plugin — 4 skills, 2 commands shipped together

Good fit Use it to learn what to include in a design proposal, such as requirements, design analysis, the planned implementation, and areas needing team feedback.

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Install with agentmods
npx agentmods add skills/intai/story-flow/learn-technical-design
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 Intai/story-flow --skill learn-technical-design
Clone the repo
git clone --depth 1 https://github.com/Intai/story-flow

Made for: Claude Code.

Or install junior-flow, the plugin that ships this one along with the rest of its 4 skills, 2 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 Learn why to discuss technical design before implementation

README.md
[![agentmods](https://agentmods.dev/badge/skills/intai/story-flow/learn-technical-design.svg)](https://agentmods.dev/skills/intai/story-flow/learn-technical-design)
Your own site
<a href="https://agentmods.dev/skills/intai/story-flow/learn-technical-design"><img src="https://agentmods.dev/badge/skills/intai/story-flow/learn-technical-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,682 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00025 $0.01682
Opus 5 $0.00013 $0.00841
Sonnet 5 $0.00005 $0.00336
Haiku 4.5 $0.00003 $0.00168

Measured 8d ago against content hash d15526b5e730, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

Learn why to discuss technical design before implementation 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 8d 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.

plugins/junior-flow/skills/learn-technical-design/SKILL.md · 293 lines

How it starts

The opening of the file, as written. The whole thing — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Why Discuss Technical Design Before Implementation?

Overview

This learning module helps junior developers understand why creating a technical design PR before implementation leads to better outcomes, faster delivery, and reduced rework.

Instructions

Present the following content interactively. After each section, use AskUserQuestion to offer 3 options:

  • "Continue to next section"
  • "Show me an example"
  • "I have a question"

Section 1: The Purpose of Technical Design PRs

Explain that in story-flow, before writing implementation code, developers create a pull request containing their technical design:

A technical design PR serves three purposes:

  1. Early feedback on approach - Get team input before investing time in implementation
  2. Alignment before coding - Ensure everyone agrees on the direction
  3. Living documentation - The merged design becomes part of the repo history

The key insight:

A technical design PR is not about seeking permission. It's about leveraging collective expertise to find the best solution before committing to an approach.

What gets included:

  • Story requirements (from the story tracker, Figma analysis)
  • Planned tasks with execution order
  • Pseudo code, example payloads, or expected API responses
  • Questions or concerns for reviewers

Section 2: The Shift-Left Concept

Explain the "shift-left" principle:

Shift-left means moving quality activities earlier in the development lifecycle.

Traditional approach (problems found late):

Design → Code → Code Review → QA → Production
                              ↑
                     Problems found here
                     (expensive to fix)

Shift-left approach (problems found early):

Design Review → Code → Code Review → QA → Production
      ↑
Problems found here
(cheap to fix)

Why "left"?

If you imagine the development timeline flowing left-to-right, shifting activities to the left means doing them earlier.

Read the full file on GitHub · 293 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. 8d ago First seen · 293 lines · 25 tokens per session scan A d15526b5e730

Subscribe to this mod's changes

Learn why to discuss technical design before implementation is a skill published in the GitHub repository Intai/story-flow (12 stars, last pushed yesterday), licensed MIT. It adds 25 tokens to every session and 1,682 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.

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