| The [Remote Control Service](rcs.md) offers an API for querying |
| and connecting to arbitrary FIDL services on the target. |
| |
| Queries can match an arbitrary number of services on the system, |
| and `select` will output all of the matches, formatted according to |
| their place in the component topology. |
| |
| In the special case of a query that uniquely matches a single service, |
| RCS can connect to that service and pass a handle to it |
| to the host for FFX to use. This is how the the |
| [plugin system](proxy-plugin.md) is able to create FIDL proxies |
| using the component selector mapping. |
| |
| To query for services on a target, write a [selector] |
| (https://fuchsia.dev/reference/fidl/fuchsia.diagnostics#Selector) to |
| match the service(s) of interest. |
