What is gRPC Client?
gRPC Client is a free online tool for testing gRPC services and APIs. Send unary and streaming requests, test protocol buffer definitions, explore service methods, and debug gRPC endpoints with metadata and authentication support.
Built with modern web technologies, this browser-based gRPC client eliminates the need for command-line tools or desktop applications, enabling you to test gRPC services directly from your browser.
Why Use gRPC Client?
This tool simplifies gRPC service testing and development. Quickly test RPC methods, validate protocol buffer messages, debug streaming connections, and verify service implementations without complex tooling or setup.
Perfect for backend developers, microservices engineers, API developers, and teams using gRPC who need to test services, validate implementations, and debug RPC calls efficiently.
Common Use Cases
Service Testing: Test gRPC service methods, validate request/response messages, and ensure proper RPC implementation during development.
Protocol Buffer Debugging: Debug protobuf message structures, test field serialization, and validate data types across service boundaries.
Streaming Operations: Test server streaming, client streaming, and bidirectional streaming to verify real-time data flows and connection handling.
Authentication Testing: Validate gRPC authentication mechanisms, test metadata headers, and ensure proper authorization workflows.
How to Use gRPC Client
Enter your gRPC service endpoint URL and upload or paste your .proto file definition. Select the service method you want to test and configure the request message fields.
Add metadata headers for authentication if needed. Click 'Send Request' to execute the RPC call and view the response. The tool displays formatted results, timing information, and any error details.