diff --git a/client-core/examples/add_cidr.rs b/client-core/examples/add_cidr.rs
new file mode 100644
index 00000000..b0a2da42
--- /dev/null
+++ b/client-core/examples/add_cidr.rs
@@ -0,0 +1,30 @@
+use anyhow::{Context, Error};
+use env_logger::Env;
+use innernet_client_core::{
+    interface::{InterfaceConfig, InterfaceName},
+    rest_client::RestClient,
+    CidrContents, DEFAULT_CONFIG_DIR,
+};
+use std::{env, path::Path};
+
+fn main() -> Result<(), Error> {
+    env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();
+
+    let config_dir = Path::new(DEFAULT_CONFIG_DIR);
+    let interface = env::args().nth(1).context("Usage: add_cidr <interface>")?;
+
+    let interface: InterfaceName = interface.parse()?;
+    let interface_config = InterfaceConfig::from_interface(config_dir, &interface)?;
+    let rest_client = RestClient::new(&interface_config.server);
+    let cidrs = rest_client.get_cidrs()?;
+
+    let name = "example".to_owned();
+    let cidr = "10.49.65.0/24".parse()?;
+    let parent = &cidrs[0];
+
+    let cidr_contents = CidrContents::new(name, cidr, parent);
+    let cidr = rest_client.create_cidr(&cidr_contents)?;
+    dbg!(&cidr);
+
+    Ok(())
+}
diff --git a/client-core/src/lib.rs b/client-core/src/lib.rs
index ca963308..25779dbb 100644
--- a/client-core/src/lib.rs
+++ b/client-core/src/lib.rs
@@ -3,8 +3,8 @@
 //! This is a work in progress but the final goal is to match the `innernet` CLI API surface.
 
 pub use innernet_shared::{
-    interface_config::PeerInvitation, Cidr, CidrTree, Endpoint, HostsOpts, NatOpts, NetworkOpts,
-    Peer, WrappedIoError, DEFAULT_HOSTS_PATH,
+    interface_config::PeerInvitation, Cidr, CidrContents, CidrTree, Endpoint, HostsOpts, NatOpts,
+    NetworkOpts, Peer, WrappedIoError, DEFAULT_HOSTS_PATH,
 };
 pub use wireguard_control::Backend;
 
diff --git a/client-core/src/rest_client.rs b/client-core/src/rest_client.rs
index fb4b5372..29df6d86 100644
--- a/client-core/src/rest_client.rs
+++ b/client-core/src/rest_client.rs
@@ -1,5 +1,5 @@
 use innernet_shared::{
-    interface_config::ServerInfo, Cidr, Peer, PeerContents, INNERNET_PUBKEY_HEADER,
+    interface_config::ServerInfo, Cidr, CidrContents, Peer, PeerContents, INNERNET_PUBKEY_HEADER,
 };
 use serde::{de::DeserializeOwned, Serialize};
 use std::{io, time::Duration};
@@ -27,6 +27,16 @@ impl<'a> RestClient<'a> {
         Self { agent, server }
     }
 
+    pub fn create_cidr(&self, cidr_contents: &CidrContents) -> Result<Cidr, RestError> {
+        let cidr = self.http_form("POST", "/admin/cidrs", cidr_contents)?;
+        Ok(cidr)
+    }
+
+    pub fn get_cidrs(&self) -> Result<Vec<Cidr>, RestError> {
+        let cidrs = self.http("GET", "/admin/cidrs")?;
+        Ok(cidrs)
+    }
+
     pub fn create_peer(&self, peer_contents: &PeerContents) -> Result<Peer, RestError> {
         let peer = self.http_form("POST", "/admin/peers", peer_contents)?;
         Ok(peer)
@@ -37,11 +47,6 @@ impl<'a> RestClient<'a> {
         Ok(peers)
     }
 
-    pub fn get_cidrs(&self) -> Result<Vec<Cidr>, RestError> {
-        let cidrs = self.http("GET", "/admin/cidrs")?;
-        Ok(cidrs)
-    }
-
     #[allow(clippy::result_large_err)]
     /// Perform a `verb` HTTP request at the given `endpoint`.
     ///
diff --git a/client/src/main.rs b/client/src/main.rs
index 6c49b998..a16f4b1b 100644
--- a/client/src/main.rs
+++ b/client/src/main.rs
@@ -453,11 +453,11 @@ fn add_cidr(interface: &InterfaceName, opts: &Opts, sub_opts: AddCidrOpts) -> Re
         InterfaceConfig::from_interface(&opts.config_dir, interface)?;
     log::info!("Fetching CIDRs");
     let rest_client = RestClient::new(&server);
-    let cidrs: Vec<Cidr> = rest_client.http("GET", "/admin/cidrs")?;
+    let cidrs: Vec<Cidr> = rest_client.get_cidrs()?;
 
     if let Some(cidr_request) = prompts::add_cidr(&cidrs, &sub_opts)? {
         log::info!("Creating CIDR...");
-        let cidr: Cidr = rest_client.http_form("POST", "/admin/cidrs", cidr_request)?;
+        let cidr: Cidr = rest_client.create_cidr(&cidr_request)?;
 
         eprintdoc!(
             "
diff --git a/shared/src/prompts.rs b/shared/src/prompts.rs
index 2d5a2c40..a5133aa6 100644
--- a/shared/src/prompts.rs
+++ b/shared/src/prompts.rs
@@ -96,11 +96,7 @@ pub fn add_cidr(cidrs: &[Cidr], request: &AddCidrOpts) -> Result<Option<CidrCont
         input("CIDR", Prefill::None)?
     };
 
-    let cidr_request = CidrContents {
-        name: name.to_string(),
-        cidr,
-        parent: Some(parent_cidr.id),
-    };
+    let cidr_request = CidrContents::new(name.to_string(), cidr, parent_cidr);
 
     Ok(
         if request.yes || confirm(&format!("Create CIDR \"{}\"?", cidr_request.name))? {
diff --git a/shared/src/types.rs b/shared/src/types.rs
index 752ec345..46296fa1 100644
--- a/shared/src/types.rs
+++ b/shared/src/types.rs
@@ -214,6 +214,16 @@ pub struct CidrContents {
     pub parent: Option<i64>,
 }
 
+impl CidrContents {
+    pub fn new(name: String, cidr: IpNet, parent: &Cidr) -> Self {
+        Self {
+            name,
+            cidr,
+            parent: Some(parent.id),
+        }
+    }
+}
+
 impl Deref for CidrContents {
     type Target = IpNet;