Borrowing it
Nothing to install: this file belongs to southleft/story-ui. 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/southleft/story-ui/main/CLAUDE.mdgit clone --depth 1 https://github.com/southleft/story-uiWrote 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/instructions/southleft/story-ui/claude-md)<a href="https://agentmods.dev/instructions/southleft/story-ui/claude-md"><img src="https://agentmods.dev/badge/instructions/southleft/story-ui/claude-md/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/instructions/southleft/story-ui/claude-md"><img src="https://agentmods.dev/badge/instructions/southleft/story-ui/claude-md.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 | $0.07259 | $0.07259 |
| Opus 5.5 | $0.02904 | $0.02904 |
| Sonnet 5.5 | $0.01452 | $0.01452 |
| Haiku 4.5 | $0.00726 | $0.00726 |
Grade C, and why
story-ui CLAUDE.md scanned grade C with 1 finding 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 10d 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.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
rm -rf node_modules/.vite # Clear cache How it starts
The opening of the file, as written. The whole thing — 623 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Story UI - AI Assistant Project Guide
Last Updated: July 28, 2026 Current Version: 4.17.0 Production URL: https://app-production-16de.up.railway.app (Vue/Vuetify example) Repository: https://github.com/southleft/story-ui
This document provides comprehensive context for AI assistants working on the Story UI codebase. It captures what the project is, how it works, architecture decisions, and development workflows to minimize token consumption during codebase analysis.
What is Story UI?
Story UI is an AI-powered Storybook story generator that works with ANY component library. Users describe components in natural language, and the AI generates working Storybook stories using their design system's actual components.
Core Value Proposition
- Design-System Agnostic: Works with React (Mantine, Chakra, MUI), Vue (Vuetify), Angular (Material), Svelte (Flowbite), Web Components (Shoelace)
- Natural Language Interface: "Create a card with a header, image, and action buttons"
- Live Preview: Generated stories appear instantly in Storybook
- Multi-Provider LLM: Supports Claude, OpenAI, and Gemini
- Self-Healing Code Generation: Validates generated code and auto-corrects errors via LLM retry loop
Quick Reference
Important Files
| Purpose | Location |
|---|---|
| MCP Server (Express) | mcp-server/index.ts |
| STDIO MCP Server | mcp-server/mcp-stdio-server.ts |
| Generation Pipeline (shared core) | mcp-server/routes/generationCore.ts |
| Story Generation (JSON transport) | mcp-server/routes/generateStory.ts |
| Streaming Generation (SSE transport) | mcp-server/routes/generateStoryStream.ts |
| Import Isolation | validateImportIsolation in generationCore.ts |
| Documentation Loader | story-generator/documentationLoader.ts |
| Self-Healing Loop | story-generator/selfHealingLoop.ts |
| Component Discovery | story-generator/componentDiscovery.ts |
| LLM Providers | story-generator/llm-providers/ |
| Framework Adapters | story-generator/framework-adapters/ |
| Storybook Panel (V1) | templates/StoryUI/StoryUIPanel.tsx |
| MDX Wrapper | templates/StoryUI/StoryUIPanel.mdx |
| V2 Workspace | templates/StoryUIV2/Workspace.tsx |
| V2 Element targeting (React fiber) | templates/StoryUIV2/elementTargeting.ts |
| V2 Property panel (direct manipulation) | templates/StoryUIV2/PropertyPanel.tsx |
| Verification orchestrator | story-generator/verify/verifyStory.ts |
| DOM census probe | story-generator/verify/probes/domCensus.ts |
| Layout probe (grid/alignment arithmetic) | story-generator/verify/probes/layout.ts |
| Visual critique (vision model) | story-generator/verify/probes/visualCritic.ts |
| Prop AST editor (no LLM) | story-generator/editing/propEditor.ts |
| Prop edit endpoints | mcp-server/routes/editProp.ts |
| Prop/type knowledge | story-generator/knowledge/propExtractor.ts |
| Token + styling idiom | story-generator/knowledge/stylingFacts.ts |
| Description quality predicate | story-generator/knowledge/descriptionQuality.ts |
| Voice Canvas: Jev decisions (no LLM) | story-generator/voice/decide.ts |
| Voice Canvas: canvas code as an AST tree | story-generator/voice/canvasTree.ts |
| Voice Canvas: templates from the team's stories | story-generator/voice/templates.ts |
| Voice Canvas: Jev HTTP client | story-generator/voice/jevClient.ts |
Voice Canvas route (POST /mcp/canvas-voice) |
mcp-server/routes/canvasVoice.ts |
| Voice Canvas panel UI | templates/StoryUI/voice/VoiceCanvas.tsx |
| CLI Entry | cli/index.ts |
| CLI Setup | cli/setup.ts |
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.
- 10d ago Changed · +2 tokens per session bddd5e71cbb1
- 1mo ago Changed · -45 lines · -332 tokens per session 52b654ca7b9e
- 2mo ago Changed · +176 lines · +3,047 tokens per session 44da284d1b9a
- 2mo ago First seen · 492 lines · 4,542 tokens per session scan C 0351914fb1ef
story-ui CLAUDE.md is an instructions file published in the GitHub repository southleft/story-ui (239 stars, last pushed 11d ago), licensed MIT. It adds 7,259 tokens to every session, about $0.0290 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
story-ui CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| story-ui CLAUDE.mdsouthleft/story-ui | Instructions file | 239 | 11d ago | MIT | C | 7,259 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |