cyu/rack-cors

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

3290 stars · 258 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Rack middleware that adds Cross-Origin Resource Sharing (CORS) support to Rack-compatible Ruby web applications, including Rails. It lets you declaratively configure allowed origins, headers, and HTTP methods so browsers can make cross-domain AJAX requests.

Use cases

• enable CORS for a Rails API
• allow cross-origin AJAX requests in a Rack app
• configure allowed origins and headers for browser requests
• replace JSONP workarounds with proper CORS headers
• restrict API access to specific domains
• handle preflight OPTIONS requests in Ruby web apps

When to choose

• you run a Rack-based app (Rails, Sinatra) that a browser frontend on another origin consumes
• you need fine-grained per-resource CORS rules with regex origins and exposed headers
• you want the standard, widely-used CORS solution in the Ruby ecosystem

When to avoid

• your server is not Rack-based (e.g., Node, Go, nginx-only setups)
• you need CORS handled at the proxy/CDN layer rather than in app middleware
• you only serve same-origin requests and need no cross-origin access

Facets

library · maturity active

middleware http-server security web-framework web-development backend apis security ruby cross-platform cors rack rails ruby-gem cross-origin web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="cyu/rack-cors")