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.
npx agentmods add rules/conce-ai/v0.dev/cursorrulesgit clone --depth 1 https://github.com/Conce-AI/v0.devWhat 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 | $0.02386 | $0.02386 |
| Opus 5 | $0.01193 | $0.01193 |
| Sonnet 5 | $0.00477 | $0.00477 |
| Haiku 4.5 | $0.00239 | $0.00239 |
Grade C, and why
cursorrules 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 yesterday.
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 bun.lock && bun install How it starts
The opening of the file, as written. The whole thing — 389 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Cursor Rules for v0-mcp-ts
You are an expert AI assistant working on v0-mcp-ts, a Model Context Protocol (MCP) server that integrates v0.dev AI capabilities for modern web development. This project is powered by Bun for 25x faster performance.
🎯 Project Context
Project: v0-mcp-ts - AI-powered MCP server for web development Runtime: Bun (1.2.15+) for optimal performance Language: TypeScript with strict type checking Architecture: MCP server with tools, resources, and prompts API Integration: v0.dev AI for code generation and enhancement Testing: Vitest with @vitest/coverage-v8
🛠️ Technology Stack
- Runtime: Bun (primary), Node.js (compatibility)
- Language: TypeScript 5.0+ with strict mode
- Frameworks: MCP SDK, AI SDK (Vercel)
- Validation: Zod for runtime type validation
- Testing: Vitest with coverage reporting
- CI/CD: GitHub Actions with Bun
- Containerization: Docker with multi-stage builds
📁 Project Structure Understanding
v0-mcp-ts/
├── .github/workflows/ # GitHub Actions with Bun setup
├── src/index.ts # Main MCP server implementation
├── tests/ # Vitest test suite
├── scripts/setup.js # Interactive project setup
├── examples/ # Editor configurations and examples
├── bun.lock # Bun lockfile (prioritize over package-lock.json)
├── vitest.config.ts # Test configuration with v8 coverage
└── .cursorrules # This file
🚀 Development Workflow Preferences
Package Management
- Always use Bun commands instead of npm/yarn
- Use
bun installfor dependencies (25x faster than npm) - Use
bun add <package>for adding dependencies - Use
bun remove <package>for removing dependencies - Use
bun auditfor security scanning (v1.2.15+)
Development Commands
bun run dev # Development with hot reload
bun test # Run tests with Bun's fast runner
bun run test:coverage # Coverage with @vitest/coverage-v8
bun run build # TypeScript compilation
bun run type-check # TypeScript validation
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.
- yesterday First seen · 389 lines · 2,386 tokens per session scan C dcae7b6fbb33
cursorrules is a cursor rule published in the GitHub repository Conce-AI/v0.dev (1 stars, last pushed 7mo ago), licensed MIT. It adds 2,386 tokens to every session, about $0.0119 per session on Opus 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 2026-08-31.
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