> For the complete documentation index, see [llms.txt](https://docs.bitbanana.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bitbanana.app/setup/connect-a-lightning-node/clngrpc-uri.md).

# clngrpc URI

{% hint style="warning" %}
CoreLightning recently changed the format of their connection URI. BitBanana v0.9.9 is required for this to work.
{% endhint %}

clngrpc is a connection URI to connect to Core Lightning nodes via gRPC.

It looks like this:

```
clngrpc://<HOST>:<PORT>?pubkey=<pubkey>&protoPath=<path-to-proto>&certs=<combined-base64-encoded-clientkey-clientcert-cacert>
```

It contains the following information:

* The host and port (specifies the node's address)
* The node's pubkey (BitBanana does not use this information)
* A client certificate & key (to authenticate the client to the host)
* A cacert (to authenticate the host to the client)