# BuiltOnRails

> Real production Rails applications and the stacks they actually run — stack
> intelligence from real apps, for developers making stack
> decisions and their AI agents. Includes an MCP server: agents can search
> products, compare stacks, get recommendations, detect stacks from a
> Gemfile, read curated Rails news, and submit or manage products.

## Docs

- [API & MCP docs (Markdown)](https://builtonrails.com/api-docs.md): full tool and endpoint reference
- [MCP manifest](https://builtonrails.com/.well-known/mcp.json): machine-readable server config
- MCP endpoint (SSE): https://builtonrails.com/mcp/sse — no API key needed for the 12 public tools

## Key pages

- [Rails apps](https://builtonrails.com/products): approved Rails apps with verified stacks
- [Stacks](https://builtonrails.com/stacks): technologies ranked by real adoption
- [Stack collections](https://builtonrails.com/collections): curated stack sets with LLM prompts
- [Daily](https://builtonrails.com/daily): curated Rails ecosystem news, updated daily
- [Sitemap](https://builtonrails.com/sitemap.xml)