Aha-Loop: Skill for Claude Code

.agents/skills/vision/SKILL.md

vision is a skill for Claude Code, Codex from YougLin-dev/Aha-Loop. It costs 40 tokens per session (1,795 once invoked), scanned A, original, MIT.

A project-starting guide that reads a vision document and turns its goals, users, scope, and constraints into structured requirements for architecture and planning.

In plain words
What is it for?
Use it to validate a project vision, identify the project’s type and scale, extract requirements, and save an analysis for architecture work.
Why use it?
It gives later technical decisions a clear summary of what the project is meant to achieve and how success will be judged.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is YougLin-dev/Aha-Loop's own configuration. It tells Claude Code and Codex how to work on Aha-Loop itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Aha-Loop configures →

Reuse

Borrowing it

Nothing to install: this file belongs to YougLin-dev/Aha-Loop. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/YougLin-dev/Aha-Loop/main/.agents/skills/vision/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/YougLin-dev/Aha-Loop

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 vision

README.md
[![agentmods](https://agentmods.dev/badge/skills/youglin-dev/aha-loop/vision/github.svg)](https://agentmods.dev/skills/youglin-dev/aha-loop/vision)
Your own site
<a href="https://agentmods.dev/skills/youglin-dev/aha-loop/vision"><img src="https://agentmods.dev/badge/skills/youglin-dev/aha-loop/vision/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 vision

Your own site · 80×15
<a href="https://agentmods.dev/skills/youglin-dev/aha-loop/vision"><img src="https://agentmods.dev/badge/skills/youglin-dev/aha-loop/vision.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,795 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 $0.00040 $0.01795
Opus 5.5 $0.00016 $0.00718
Sonnet 5.5 $0.00008 $0.00359
Haiku 4.5 $0.00004 $0.00179

Measured 2mo ago against content hash d8eca0e1d9db, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

vision 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 2mo 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.

.agents/skills/vision/SKILL.md · 337 lines

How it starts

The opening of the file, as written. The whole thing — 337 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Vision Analysis Skill

Parse the project vision document and extract structured requirements for architecture and planning.

Workspace Mode Note

When running in workspace mode, all paths are relative to .aha-loop/ directory:

  • Vision file: .aha-loop/project.vision.md
  • Analysis output: .aha-loop/project.vision-analysis.md

The orchestrator will provide the actual paths in the prompt context.


The Job

  1. Read project.vision.md from the project root
  2. Validate all required sections are present
  3. Extract and structure the requirements
  4. Identify project type and scale
  5. Output analysis to guide architecture decisions
  6. Save analysis to project.vision-analysis.md

Input: project.vision.md

The vision document should contain:

Required Sections

Section Purpose
What One-sentence description of the project
Why Motivation and problem being solved
Target Users Who will use this product
Success Criteria Measurable definition of success

Optional Sections

Section Purpose
Constraints Technical, budget, or time limitations
Inspirations Reference products or desired style
Non-Goals What the project explicitly won't do

Analysis Process

Step 1: Validate Vision Document

Check that project.vision.md exists and contains required sections:

## Validation Checklist
- [ ] What section present and clear
- [ ] Why section explains motivation
- [ ] Target Users defined
- [ ] Success Criteria are measurable

If sections are missing or unclear, document what's needed before proceeding.

Step 2: Identify Project Type

Classify the project:

Type Characteristics
CLI Tool Command-line interface, no UI
Web App Browser-based, frontend + backend
API Service Backend only, REST/GraphQL
Library Reusable code package
Desktop App Native desktop application
Mobile App iOS/Android application
Full Stack Complete web application
Infrastructure DevOps, deployment tools

Read the full file on GitHub · 337 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. 2mo ago First seen · 337 lines · 40 tokens per session scan A d8eca0e1d9db

Subscribe to this mod's changes

vision is a skill published in the GitHub repository YougLin-dev/Aha-Loop (178 stars, last pushed 9mo ago), licensed MIT. It adds 40 tokens to every session and 1,795 once invoked, about $0.0002 per session on Opus 5.5. 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.

Related

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vision next to 6 skills from other repositories
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