dev-story

dev-story is a skill for Claude Code from IdoCohen560/claude-unity-game-studio. It costs 74 tokens per session (3,442 once invoked), scanned A, a copy of dev-story, MIT.

An implementation workflow that takes one prepared development story, loads its design and architecture context, and guides the coding and testing needed to complete it. A story is one focused piece of game behaviour.

In plain words
What is it for?
Use it after a story has been checked for readiness to implement the code, write its test, and verify every stated acceptance condition.
Why use it?
It reduces the chance that a developer implements a task without understanding the relevant design requirements or technical rules. It also keeps implementation tied to tests and completion checks.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions subagents; names the AskUserQuestion tool.

Good fit Use it after a story has been checked for readiness to implement the code, write its test, and verify every stated acceptance condition.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/idocohen560/claude-unity-game-studio/dev-story
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 IdoCohen560/claude-unity-game-studio --skill dev-story
Clone the repo
git clone --depth 1 https://github.com/IdoCohen560/claude-unity-game-studio

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 dev-story

README.md
[![agentmods](https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/dev-story/github.svg)](https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/dev-story)
Your own site
<a href="https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/dev-story"><img src="https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/dev-story/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 dev-story

Your own site · 80×15
<a href="https://agentmods.dev/skills/idocohen560/claude-unity-game-studio/dev-story"><img src="https://agentmods.dev/badge/skills/idocohen560/claude-unity-game-studio/dev-story.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,442 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 88% copy Near-identical to another mod 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 $0.00074 $0.03442
Opus 5 $0.00037 $0.01721
Sonnet 5 $0.00015 $0.00688
Haiku 4.5 $0.00007 $0.00344

Measured 5d ago against content hash c6e666b71921, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

dev-story 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 5d 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.

Origin

This is a copy

88% identical to dev-story — 64 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

examples/my-first-game/.claude/skills/dev-story/SKILL.md · 324 lines

How it starts

The opening of the file, as written. The whole thing — 324 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dev Story

This skill bridges planning and code. It reads a story file in full, assembles all the context a programmer needs, routes to the correct specialist agent, and drives implementation to completion — including writing the test.

The loop for every story:

/qa-plan sprint           ← define test requirements before sprint begins
/story-readiness [path]   ← validate before starting
/dev-story [path]         ← implement it  (this skill)
/code-review [files]      ← review it
/story-done [path]        ← verify and close it

After all sprint stories are done: run /team-qa sprint to execute the full QA cycle and get a sign-off verdict before advancing the project stage.

Output: Source code + test file in the project's src/ and tests/ directories.


Phase 1: Find the Story

If a path is provided: read that file directly.

If no argument: check production/session-state/active.md for the active story. If found, confirm: "Continuing work on [story title] — is that correct?" If not found, ask: "Which story are we implementing?" Glob production/epics/**/*.md and list stories with Status: Ready.


Phase 2: Load Full Context

Before loading any context, verify required files exist. Extract the ADR path from the story's ADR Governing Implementation field, then check:

File Path If missing
TR registry docs/architecture/tr-registry.yaml STOP — "TR registry not found. Run /create-epics to generate it."
Governing ADR path from story's ADR field STOP — "ADR file [path] not found. Run /architecture-decision to create it, or correct the filename in the story's ADR field."
Control manifest docs/architecture/control-manifest.md WARN and continue — "Control manifest not found — layer rules cannot be checked. Run /create-control-manifest."

If the TR registry or governing ADR is missing, set the story status to BLOCKED in the session state and do not spawn any programmer agent.

Read the full file on GitHub · 324 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. 5d ago First seen · 324 lines · 74 tokens per session scan A c6e666b71921

Subscribe to this mod's changes

dev-story is a skill published in the GitHub repository IdoCohen560/claude-unity-game-studio (18 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 3,442 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to dev-story, differing in 64 lines, and is treated as a copy.

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