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+# PHP gRPC Tools
+
+This directory contains protoc and the PHP gRPC protoc plugin for Windows, Linux, and Mac.
+
+Before this composer package is published, the following directories should be filled with the corresponding `protoc` and `grpc_php_plugin` executables.
+
+ - `bin/x86-linux`
+ - `bin/x86_64-linux`
+ - `bin/x86-macos`
+ - `bin/x86_64-macos`
+ - `bin/x86-windows`
+ - `bin/x86_64-windows`
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