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Restish is a CLI for interacting with REST-ish HTTP APIs with some nice features built-in, like always having the latest API resources, fields, and operations available when they go live on the API without needing to install or update anything.

See the user guide to get started, or how Restish compares to cURL & HTTPie.

Features include:

• HTTP/2 (RFC 7540) with TLS by default with fallback to HTTP/1.1
• Generic head/get/post/put/patch/delete verbs like curl or HTTPie
• Generated commands for CLI operations, e.g. restish my-api list-users
  • Automatically discovers API descriptions
    • RFC 8631 service-desc link relation
    • RFC 5988 describedby link relation
  • Supported formats
    • OpenAPI 3.0 / 3.1 and JSON Schema
  • Automatic configuration of API auth if advertised by the API
  • Shell command completion for Bash, Fish, Zsh, Powershell
• Automatic pagination of resource collections via RFC 5988 prev and next hypermedia links
• API endpoint-based auth built-in with support for profiles:
  • HTTP Basic
  • API key via header or query param
  • OAuth2 client credentials flow (machine-to-machine, RFC 6749)
  • OAuth2 authorization code (with PKCE RFC 7636) flow
  • On the fly authorization through external tools for custom API signature mechanisms
• Content negotiation, decoding & unmarshalling built-in:
  • JSON (RFC 8259, https://www.json.org/)
  • YAML (https://yaml.org/)
  • CBOR (RFC 7049, http://cbor.io/)
  • MessagePack (https://msgpack.org/)
  • Amazon Ion (http://amzn.github.io/ion-docs/)
  • Gzip (RFC 1952) and Brotli (RFC 7932) content encoding
• Standardized hypermedia parsing into queryable/followable response links:
  • HTTP Link relation headers (RFC 5988)
  • HAL
  • Siren
  • Terrifically Simple JSON
  • JSON:API
• Local caching that respects RFC 7234 Cache-Control and Expires headers
• CLI shorthand for structured data input (e.g. for JSON)
• Shorthand query response filtering & projection
• Colorized prettified readable output
• Fast native zero-dependency binary

Articles:

• A CLI for REST APIs
• Mapping OpenAPI to the CLI

This project started life as a fork of OpenAPI CLI Generator.