What is RuleSell?
RuleSell is an open-source-attributed marketplace for AI development assets. The launch catalog is 212 listings ingested from public GitHub repos — rules, MCP servers, skills, agents, workflows, prompts, CLIs, datasets, and bundles — each credited to its real author with an SPDX license badge and a quality score. Works with Claude Code, Cursor, Windsurf, Cline, Codex, ChatGPT, Gemini CLI, n8n, GitHub Copilot, and other AI coding tools. Real OSS authors can claim their listing via GitHub OAuth and take over ownership.
What problem does RuleSell solve?
AI coding tools like Claude Code, Cursor, and Windsurf are powerful, but their effectiveness depends on the rules, skills, and integrations developers configure. The current ecosystem has three problems:
- No quality signals. Directories list thousands of assets with star ratings that are easily gamed. There is no way to know if an asset actually works well.
- No security scanning. Research shows 36.7% of public MCP servers have SSRF vulnerabilities. Most directories do not scan for security issues.
- Creators earn nothing. On cursor.directory, smithery.ai, and mcp.so, creators list assets for free with no revenue share. There is no incentive to maintain quality.
RuleSell solves all three with automated quality measurement, real author attribution via GitHub claims, and a creator-revenue rail (free during beta; paid publishing with Stripe Connect payouts after beta) so maintainers are incentivized to keep listings fresh.
How does RuleSell's quality scoring work?
Every asset is automatically scored on three signals when uploaded and re-evaluated weekly. Two more signals are on the roadmap and currently labelled as such.
Freshness
Days since the source repo's last commit. Recent commits score higher; stale assets auto-decay.
Schema cleanliness
Validates category, SPDX license, description length, and preview length. Clean metadata surfaces cleanly to AI consumers.
Review score
Mean rating across verified reviews when they exist. Listings without reviews get a neutral 60 baseline so new items aren't penalised.
Token efficiency (planned)
Will measure how concisely the asset delivers its instructions. Not in production — ships when CLI install telemetry opens.
Install success (planned)
Will track successful installations across Claude Code, Cursor, Windsurf, and other environments. Not in production — ships with CLI telemetry.
These three shipping signals combine into a letter grade: A (85+), B (70-84), C (50-69). Token-efficiency and install-success are planned signals not yet in production — see /trust for the honest pipeline state.
What AI coding tools does RuleSell support?
RuleSell assets work across these AI coding tools and platforms:
- Claude Code (Anthropic)
- Cursor
- Windsurf (Codeium)
- Cline
- Codex (OpenAI)
- ChatGPT
- Gemini CLI
- n8n
- GitHub Copilot
- VS Code + AI extensions
- Zed
- Roo Code
- Aider
- OpenCode
- Goose
What types of assets are on RuleSell?
Rules
Coding rules and style guides that define how AI assistants write code in your projects. Includes .cursorrules, CLAUDE.md, and other format files.
MCP Servers
Model Context Protocol servers that connect AI assistants to databases, APIs, browsers, and external services.
Skills
Claude Code skills — prompt-based workflows that extend capabilities. Auto-triggered by context or invoked via slash commands.
Agents
Multi-agent orchestration templates that coordinate multiple AI agents across parallel tasks.
Workflows
Automation flows for n8n, Zapier, and Make. Pre-built integrations for common developer tasks.
Prompts
Reusable system prompts and templates for ChatGPT, Claude, Gemini, and other LLMs.
CLIs
Command-line tools and developer utilities powered by AI.
Datasets
Fine-tuning datasets, evaluation benchmarks, and training data.
Bundles
Curated packs of related assets sold together at a discount.
How much does RuleSell cost?
During beta
$0
Every listing is free. Browse, install, publish, claim — everything at no cost while we build the payments rail.
After beta
TBA
Paid listings open when Stripe Connect payouts ship. Exact fee + revenue share will be published here — no commitments we can't back up yet.
How to install assets from RuleSell
- Find an asset. Browse rulesell.com or use the search to find rules, MCP servers, skills, or other assets for your AI coding tool.
- Check quality score. Review the asset's quality grade (A/B/C — computed from freshness, schema cleanliness, and review score) and verified reviews from other developers who installed it. Security scanning is on the v2 roadmap — current protection is manual admin review and SPDX license gating at ingest.
- Copy-paste install (CLI launches with beta). Each listing shows exactly what to copy into your editor, with per-environment instructions for Claude Code, Cursor, Windsurf, and more. The one-command CLI — `npx rulesell install <slug>` — ships with the open beta.
- Verify installation. Open the file in your editor to confirm it landed in the right place. For rules, they take effect on your next AI interaction.
How RuleSell compares to alternatives
| Feature | RuleSell | cursor.directory | smithery.ai | mcp.so |
|---|---|---|---|---|
| Asset types | 9 categories | Cursor rules only | MCP servers | MCP servers |
| Quality scoring | 3-signal automated (A/B/C) | Community votes | Basic verification | None |
| Security scanning | v2 roadmap | No | Partial | No |
| Creator revenue | After beta (TBA) | 0% | 0% | 0% |
| Environments | 10+ tools | Cursor only | Multiple | Multiple |
Ready to explore?
Browse quality-scored AI assets or start selling your own.