An opinionated Ruby framework for creating REST-like APIs with a simple DSL.
Grape is a REST-like API framework for Ruby that provides a simple DSL for building RESTful APIs. It is designed to run on Rack or complement existing web frameworks like Rails and Sinatra, offering built-in support for common API conventions such as versioning, content negotiation, and parameter validation.
Ruby developers building RESTful APIs who want a lightweight, expressive framework that integrates seamlessly with Rails, Sinatra, or standalone Rack applications.
Developers choose Grape for its opinionated yet flexible DSL, robust parameter validation, and seamless integration with existing Ruby web stacks without imposing heavy overhead.
An opinionated framework for creating REST-like APIs in Ruby.
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Provides a clean, intuitive syntax for defining endpoints, parameters, and helpers, as shown in the 'Basic Usage' example with concise route and validation blocks.
Offers declarative validation with type coercion, nested parameters, and custom validators, detailed in the 'Parameter Validation and Coercion' section with examples like 'mutually_exclusive'.
Seamlessly integrates as standalone Rack app, alongside Sinatra, or within Rails, with specific instructions in 'Mounting' sections, including cascade order warnings.
Supports multiple versioning strategies (path, header, param), content negotiation, and prefix/subdomain restrictions, evidenced in 'Versioning Strategies'.
Exhibits dependency on Rack middleware with noted bugs, such as the 'Bug in Rack::ETag' that affects linting until specific Rack patches are applied.
Requires careful ordering when mounted with other frameworks via Rack::Cascade to avoid incorrect 404 errors, as explicitly cautioned in the 'Alongside Sinatra' section.
Demands extra setup for Rails integration, like configuring Zeitwerk inflections for acronyms (e.g., 'API'), adding friction compared to drop-in solutions.