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grpcurlhttpYac
Free

The open-source application is available without a license fee.

 Free

Free to use.

Windows, macOS, Linux, Command line Command line
  • Browse schemas and invoke RPC methods
  • Plain-text request files that fit in version control
  • REST, SOAP, GraphQL and gRPC in one tool
  • Servers without reflection require proto or protoset files.
  • No standalone graphical app; works through the CLI or VS Code
  • Scripting requires familiarity with Node.js
Downloadable app Downloadable app
Open source Open source
License: MIT License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.