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# Lux gRPC
Now Serving: **Protocol Version 42**
Protobuf files are hosted at
[https://buf.build/luxfi/lux](https://buf.build/luxfi/lux) and
can be used as dependencies in other projects.
Protobuf linting and generation for this project is managed by
[buf](https://github.com/bufbuild/buf).
Please find installation instructions on
[https://docs.buf.build/installation/](https://docs.buf.build/installation/).
Any changes made to proto definition can be updated by running
`protobuf_codegen.sh` located in the `scripts/` directory of Lux Node.
`buf` Quickstart
[https://buf.build/docs/cli/quickstart](https://buf.build/docs/cli/quickstart)
## Protocol Version Compatibility
The protobuf definitions and generated code are versioned based on the
[RPCChainVMProtocol](../version/version.go#L13) defined for the RPCChainVM.
Many versions of a Lux client can use the same
[RPCChainVMProtocol](../version/version.go#L13). But each Lux client and
chain VM must use the same protocol version to be compatible.
## Publishing to Buf Schema Registry
- Checkout appropriate tag in Lux Node `git checkout v1.10.1`
- Change to proto/ directory `cd proto`.
- Publish new tag to buf registry. `buf push -t v26`
Note: Publishing requires auth to the luxfi org in buf
https://buf.build/luxfi/repositories