diff --git a/.gitignore b/.gitignore
index 216bb69..686ddf2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /target
 /libcollar_store
+**/libcollar_store
diff --git a/Cargo.lock b/Cargo.lock
index cde2b94..a6a646b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,1507 +1,2088 @@
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 version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "581fee95406bb13382d2f65cd4a908ca7b1e4c2f1917f143ba16efe98a589b5d"
 
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e55b5ac9ea33f2fc1716d1742db15574fd6fc8dadc51caab1c16a3d3b4190ba"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0a6e035dd0599267ce1ee132e51c27dd29437f63325753051e71dd9e42406c57"
 
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "271414315aff87387382ec3d271b52d7ae78726f5d44ac98b4f4030c91880486"
 
 [[package]]
 name = "wit-bindgen-rt"
 version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
 dependencies = [
  "bitflags 2.9.1",
 ]
+
+[[package]]
+name = "writeable"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea2f10b9bb0928dfb1b42b65e1f9e36f7f54dbdf08457afefb38afcdec4fa2bb"
+
+[[package]]
+name = "yansi"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfe53a6657fd280eaa890a3bc59152892ffa3e30101319d168b781ed6529b049"
+
+[[package]]
+name = "yoke"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f41bb01b8226ef4bfd589436a297c53d118f65921786300e427be8d487695cc"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1702d9583232ddb9174e01bb7c15a2ab8fb1bc6f227aa1233858c351a3ba0cb"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerotrie"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36f0bbd478583f79edad978b407914f61b2972f5af6fa089686016be8f9af595"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a05eb080e015ba39cc9e23bbe5e7fb04d5fb040350f99f34e338d5fdd294428"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
diff --git a/crates/api/Cargo.toml b/crates/api/Cargo.toml
index 7f731ef..47b3dbf 100644
--- a/crates/api/Cargo.toml
+++ b/crates/api/Cargo.toml
@@ -1,16 +1,23 @@
 [package]
 name = "api"
 version = "0.1.0"
 license.workspace = true
 edition.workspace = true
 authors.workspace = true
 
 [dependencies]
 log.workspace = true
 thiserror.workspace = true
 tracing.workspace = true
 tokio.workspace = true
 libcollar.workspace = true
 store = { path = "../store" }
 tower-http = { version = "0.6.4", features = ["trace"] }
 axum = "0.8.4"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+[dev-dependencies]
+axum-test = "17.3"
+tokio-test = "0.4"
+tempfile = "3.0"
diff --git a/crates/api/src/lib.rs b/crates/api/src/lib.rs
index a15ccca..69e8a59 100644
--- a/crates/api/src/lib.rs
+++ b/crates/api/src/lib.rs
@@ -1,142 +1,318 @@
+//! # Collar API
+//! 
+//! HTTP API for network management functionality.
+//! 
+//! ## Network Endpoints
+//! 
+//! - `GET /networks` - List all networks
+//! - `POST /networks` - Create a new network
+//! - `GET /networks/{name}` - Get network details
+//! - `DELETE /networks/{name}` - Delete a network
+//! 
+//! ## Network Creation
+//! 
+//! Networks can be created with different provider and assigner configurations:
+//! 
+//! ### Basic Network
+//! ```json
+//! {
+//!   "name": "test-network",
+//!   "cidr": "192.168.1.0/24"
+//! }
+//! ```
+//! 
+//! ### Network with Basic Assigner
+//! ```json
+//! {
+//!   "name": "test-network",
+//!   "cidr": "192.168.1.0/24",
+//!   "assigner_type": "basic",
+//!   "assigner_config": {
+//!     "strategy": "sequential"
+//!   }
+//! }
+//! ```
+//! 
+//! ### Network with Range Assigner
+//! ```json
+//! {
+//!   "name": "test-network", 
+//!   "cidr": "192.168.1.0/24",
+//!   "assigner_type": "range",
+//!   "assigner_config": {
+//!     "range_name": "my-range"
+//!   }
+//! }
+//! ```
+
 use std::sync::Arc;
 
 use axum::{
     routing::get,
     extract::{State, Path},
     routing::post,
+    response::{Response, IntoResponse},
+    http::StatusCode,
+    Json,
 };
+use serde::{Deserialize, Serialize};
+use store::network::{NetRange, BasicProvider, BasicAssigner, RangeAssigner};
 
 pub use axum::serve;
 
 struct AppState {
     collar: libcollar::State,
 }
 
 pub fn app(collar: libcollar::State) -> axum::Router {
     let state = Arc::new(AppState { collar });
 
     // build our application with a single route
     let app = axum::Router::new()
         .route("/", get(|| async { "collared." }))
+        .route("/networks", get(get_networks))
+        .route("/networks", post(post_networks))
+        .route("/networks/{name}", get(get_network))
+        .route("/networks/{name}", axum::routing::delete(delete_network))
         .route("/ng/eiface/{name}", post(post_ng_eiface))
         .route("/store/namespace/{name}", post(post_ns))
         .route("/store/namespace/{name}/{key}/{value}", post(post_ns_key))
         .route("/store/namespace/{name}/{key}", get(get_ns_key))
         .route("/store/range/new/{name}/{size}", post(post_range_define))
         .route("/store/range/{name}/assign/{value}", post(post_range_assign))
         .route("/store/range/{name}/unassign/{value}", post(post_range_unassign))
         .route("/store/range/{name}/{position}", get(get_range_position))
         .route("/store/range/{name}", get(get_range_list))
         .route("/store/ranges", get(get_ranges_list))
         .with_state(state)
         .layer(tower_http::trace::TraceLayer::new_for_http());
 
     app
 }
 
 async fn post_ns(State(state): State<Arc<AppState>>, Path(name): Path<String>) -> Result<String, String> {
     let ns = state.collar.store.namespaces();
 
     // First, ensure the namespace exists
     if let Err(e) = ns.define(&name) {
         return Err(format!("Failed to define namespace '{}': {:?}", name, e));
     }
 
     Ok("ok".to_string())
 }
 
 async fn post_ns_key(State(state): State<Arc<AppState>>, Path((name, key, value)): Path<(String, String, String)>) -> Result<String, String> {
     let ns = state.collar.store.namespaces();
 
     // Try to reserve the key-value pair
     match ns.reserve(&name, &key, &value) {
         Ok(_) => Ok(format!("Reserved key '{}' with value '{}' in namespace '{}'", key, value, name)),
         Err(e) => Err(format!("Failed to reserve key '{}' in namespace '{}': {:?}", key, name, e)),
     }
 }
 
 async fn get_ns_key(State(state): State<Arc<AppState>>, Path((name, key)): Path<(String, String)>) -> Result<String, String> {
     let ns = state.collar.store.namespaces();
 
     match ns.get(&name, &key) {
         Ok(Some(value)) => Ok(value),
         Ok(None) => Err(format!("Key '{}' not found in namespace '{}'", key, name)),
         Err(e) => Err(format!("Failed to get key '{}' from namespace '{}': {:?}", key, name, e)),
     }
 }
 
 async fn post_ng_eiface(State(state): State<Arc<AppState>>, Path(name): Path<String>) -> Result<String, String> {
     let fname = name.clone();
     let result = state.collar.leash().gated(move || {
         Ok(libcollar::ng::new_eiface(&name))
     }).await;
     Ok(format!("sup {} => {:?}", &fname, result))
 }
 
 async fn post_range_define(State(state): State<Arc<AppState>>, Path((name, size)): Path<(String, u64)>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.define(&name, size) {
         Ok(_) => Ok(format!("Defined range '{}' with size {}", name, size)),
         Err(e) => Err(format!("Failed to define range '{}': {:?}", name, e)),
     }
 }
 
 async fn post_range_assign(State(state): State<Arc<AppState>>, Path((name, value)): Path<(String, String)>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.assign(&name, &value) {
         Ok(position) => Ok(format!("Assigned '{}' to position {} in range '{}'", value, position, name)),
         Err(e) => Err(format!("Failed to assign '{}' to range '{}': {:?}", value, name, e)),
     }
 }
 
 async fn get_range_position(State(state): State<Arc<AppState>>, Path((name, position)): Path<(String, u64)>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.get(&name, position) {
         Ok(Some(value)) => Ok(value),
         Ok(None) => Err(format!("No value at position {} in range '{}'", position, name)),
         Err(e) => Err(format!("Failed to get position {} from range '{}': {:?}", position, name, e)),
     }
 }
 
 async fn get_range_list(State(state): State<Arc<AppState>>, Path(name): Path<String>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.list_range(&name) {
         Ok(assignments) => {
             let mut result = format!("Assignments in range '{}':\n", name);
             for (position, value) in assignments {
                 result.push_str(&format!("  {}: {}\n", position, value));
             }
             Ok(result)
         },
         Err(e) => Err(format!("Failed to list range '{}': {:?}", name, e)),
     }
 }
 
 async fn get_ranges_list(State(state): State<Arc<AppState>>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.list_ranges() {
         Ok(range_list) => {
             let mut result = "Available ranges:\n".to_string();
             for (name, size) in range_list {
                 result.push_str(&format!("  {} (size: {})\n", name, size));
             }
             Ok(result)
         },
         Err(e) => Err(format!("Failed to list ranges: {:?}", e)),
     }
 }
 
+#[derive(Serialize, Deserialize)]
+struct CreateNetworkRequest {
+    name: String,
+    cidr: String,
+    provider_type: Option<String>,
+    provider_config: Option<serde_json::Value>,
+    assigner_type: Option<String>,
+    assigner_config: Option<serde_json::Value>,
+}
+
+async fn get_networks(State(state): State<Arc<AppState>>) -> impl IntoResponse {
+    let networks = state.collar.store.networks();
+    
+    match networks.list() {
+        Ok(network_list) => (StatusCode::OK, Json(network_list)).into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to list networks: {:?}", e)).into_response(),
+    }
+}
+
+async fn post_networks(State(state): State<Arc<AppState>>, Json(req): Json<CreateNetworkRequest>) -> impl IntoResponse {
+    let networks = state.collar.store.networks();
+    
+    // Parse the CIDR
+    let netrange = match NetRange::from_cidr(&req.cidr) {
+        Ok(range) => range,
+        Err(e) => return (StatusCode::BAD_REQUEST, format!("Invalid CIDR '{}': {:?}", req.cidr, e)).into_response(),
+    };
+    
+    // Create basic provider with optional config
+    let provider = if let Some(config) = req.provider_config {
+        BasicProvider::new().with_config("config", &config.to_string())
+    } else {
+        BasicProvider::new()
+    };
+    
+    // Handle different assigner types with separate create calls
+    let result = if let Some(assigner_type) = req.assigner_type {
+        match assigner_type.as_str() {
+            "basic" => {
+                let mut basic_assigner = BasicAssigner::new("sequential");
+                if let Some(config) = req.assigner_config {
+                    basic_assigner = basic_assigner.with_config("config", &config.to_string());
+                }
+                networks.create(&req.name, netrange, provider, Some(basic_assigner))
+            },
+            "range" => {
+                if let Some(config) = req.assigner_config {
+                    if let Some(range_name) = config.get("range_name").and_then(|v| v.as_str()) {
+                        let mut range_assigner = RangeAssigner::with_range_name(range_name);
+                        if let Some(extra_config) = config.get("config") {
+                            range_assigner = range_assigner.with_config("config", &extra_config.to_string());
+                        }
+                        networks.create(&req.name, netrange, provider, Some(range_assigner))
+                    } else {
+                        return (StatusCode::BAD_REQUEST, "Range assigner requires 'range_name' in config".to_string()).into_response();
+                    }
+                } else {
+                    return (StatusCode::BAD_REQUEST, "Range assigner requires config with 'range_name'".to_string()).into_response();
+                }
+            },
+            _ => return (StatusCode::BAD_REQUEST, format!("Unknown assigner type: {}", assigner_type)).into_response(),
+        }
+    } else {
+        networks.create(&req.name, netrange, provider, None::<BasicAssigner>)
+    };
+    
+    // Handle the result
+    match result {
+        Ok(_) => (StatusCode::OK, format!("Created network '{}'", req.name)).into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to create network '{}': {:?}", req.name, e)).into_response(),
+    }
+}
+
+async fn get_network(State(state): State<Arc<AppState>>, Path(name): Path<String>) -> impl IntoResponse {
+    let networks = state.collar.store.networks();
+    
+    match networks.get(&name) {
+        Ok(Some(network)) => {
+            let network_json = serde_json::json!({
+                "name": network.name,
+                "netrange": match network.netrange {
+                    NetRange::V4 { addr, prefix } => {
+                        serde_json::json!({
+                            "type": "v4",
+                            "addr": addr.to_string(),
+                            "prefix": prefix
+                        })
+                    },
+                    NetRange::V6 { addr, prefix } => {
+                        serde_json::json!({
+                            "type": "v6", 
+                            "addr": addr.to_string(),
+                            "prefix": prefix
+                        })
+                    }
+                },
+                "provider_type": network.provider_type,
+                "provider_config": serde_json::from_str::<serde_json::Value>(&network.provider_config).unwrap_or(serde_json::Value::Null),
+                "assigner_type": network.assigner_type,
+                "assigner_config": network.assigner_config.as_ref()
+                    .and_then(|config| serde_json::from_str::<serde_json::Value>(config).ok())
+                    .unwrap_or(serde_json::Value::Null)
+            });
+            (StatusCode::OK, Json(network_json)).into_response()
+        },
+        Ok(None) => (StatusCode::NOT_FOUND, format!("Network '{}' not found", name)).into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to get network '{}': {:?}", name, e)).into_response(),
+    }
+}
+
+async fn delete_network(State(state): State<Arc<AppState>>, Path(name): Path<String>) -> impl IntoResponse {
+    let networks = state.collar.store.networks();
+    
+    match networks.delete(&name) {
+        Ok(true) => (StatusCode::OK, format!("Deleted network '{}'", name)).into_response(),
+        Ok(false) => (StatusCode::NOT_FOUND, format!("Network '{}' not found", name)).into_response(),
+        Err(e) => (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to delete network '{}': {:?}", name, e)).into_response(),
+    }
+}
+
 async fn post_range_unassign(State(state): State<Arc<AppState>>, Path((name, value)): Path<(String, String)>) -> Result<String, String> {
     let ranges = state.collar.store.ranges();
 
     match ranges.unassign(&name, &value) {
         Ok(true) => Ok(format!("Unassigned '{}' from range '{}'", value, name)),
         Ok(false) => Err(format!("Value '{}' not found in range '{}'", value, name)),
         Err(e) => Err(format!("Failed to unassign '{}' from range '{}': {:?}", value, name, e)),
     }
 }
diff --git a/crates/api/tests/network_api_tests.rs b/crates/api/tests/network_api_tests.rs
new file mode 100644
index 0000000..9204e6f
--- /dev/null
+++ b/crates/api/tests/network_api_tests.rs
@@ -0,0 +1,249 @@
+use axum::http::StatusCode;
+use axum_test::TestServer;
+use serde_json::json;
+use tempfile::TempDir;
+
+async fn create_test_app() -> (TestServer, TempDir) {
+    let temp_dir = tempfile::tempdir().expect("Failed to create temp directory");
+    let db_path = temp_dir.path().join("test_db");
+    
+    let collar_state = libcollar::new_test(&db_path.to_string_lossy()).expect("Failed to create collar state");
+    let app = api::app(collar_state);
+    let server = TestServer::new(app).expect("Failed to create test server");
+    (server, temp_dir)
+}
+
+#[tokio::test]
+async fn test_get_networks_empty() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let response = server.get("/networks").await;
+    response.assert_status(StatusCode::OK);
+    
+    let networks: Vec<String> = response.json();
+    assert!(networks.is_empty());
+}
+
+#[tokio::test]
+async fn test_create_network_basic() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let create_request = json!({
+        "name": "test-network",
+        "cidr": "192.168.1.0/24"
+    });
+    
+    let response = server.post("/networks").json(&create_request).await;
+    response.assert_status(StatusCode::OK);
+    response.assert_text("Created network 'test-network'");
+}
+
+#[tokio::test]
+async fn test_create_network_with_assigner() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let create_request = json!({
+        "name": "test-network-assigner",
+        "cidr": "10.0.0.0/16",
+        "assigner_type": "basic",
+        "assigner_config": {
+            "strategy": "sequential"
+        }
+    });
+    
+    let response = server.post("/networks").json(&create_request).await;
+    response.assert_status(StatusCode::OK);
+    response.assert_text("Created network 'test-network-assigner'");
+}
+
+#[tokio::test]
+async fn test_create_network_with_range_assigner() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    // First create a range
+    let range_response = server.post("/store/range/new/test-range/256").await;
+    range_response.assert_status(StatusCode::OK);
+    
+    let create_request = json!({
+        "name": "test-range-network",
+        "cidr": "172.16.0.0/24",
+        "assigner_type": "range",
+        "assigner_config": {
+            "range_name": "test-range"
+        }
+    });
+    
+    let response = server.post("/networks").json(&create_request).await;
+    response.assert_status(StatusCode::OK);
+    response.assert_text("Created network 'test-range-network'");
+}
+
+#[tokio::test]
+async fn test_create_network_invalid_cidr() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let create_request = json!({
+        "name": "invalid-network",
+        "cidr": "invalid-cidr"
+    });
+    
+    let response = server.post("/networks").json(&create_request).await;
+    response.assert_status(StatusCode::BAD_REQUEST);
+    
+    let error_text = response.text();
+    assert!(error_text.contains("Invalid CIDR"));
+}
+
+#[tokio::test]
+async fn test_get_network_after_creation() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    // Create network first
+    let create_request = json!({
+        "name": "get-test-network",
+        "cidr": "192.168.100.0/24",
+        "provider_config": {
+            "region": "us-west-2"
+        }
+    });
+    
+    let create_response = server.post("/networks").json(&create_request).await;
+    create_response.assert_status(StatusCode::OK);
+    
+    // Get the network
+    let response = server.get("/networks/get-test-network").await;
+    response.assert_status(StatusCode::OK);
+    
+    let network: serde_json::Value = response.json();
+    assert_eq!(network["name"], "get-test-network");
+    assert_eq!(network["netrange"]["type"], "v4");
+    assert_eq!(network["netrange"]["addr"], "192.168.100.0");
+    assert_eq!(network["netrange"]["prefix"], 24);
+    assert_eq!(network["provider_type"], "basic");
+}
+
+#[tokio::test]
+async fn test_get_nonexistent_network() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let response = server.get("/networks/nonexistent").await;
+    response.assert_status(StatusCode::NOT_FOUND);
+    
+    let error_text = response.text();
+    assert!(error_text.contains("not found"));
+}
+
+#[tokio::test]
+async fn test_list_networks_after_creation() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    // Create multiple networks
+    let networks = vec![
+        ("network-1", "192.168.1.0/24"),
+        ("network-2", "192.168.2.0/24"),
+        ("network-v6", "2001:db8::/64"),
+    ];
+    
+    for (name, cidr) in &networks {
+        let create_request = json!({
+            "name": name,
+            "cidr": cidr
+        });
+        
+        let response = server.post("/networks").json(&create_request).await;
+        response.assert_status(StatusCode::OK);
+    }
+    
+    // List networks
+    let response = server.get("/networks").await;
+    response.assert_status(StatusCode::OK);
+    
+    let network_list: Vec<String> = response.json();
+    assert_eq!(network_list.len(), 3);
+    
+    for (name, _) in &networks {
+        assert!(network_list.contains(&name.to_string()));
+    }
+}
+
+#[tokio::test]
+async fn test_delete_network() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    // Create network first
+    let create_request = json!({
+        "name": "delete-test-network",
+        "cidr": "10.10.0.0/16"
+    });
+    
+    let create_response = server.post("/networks").json(&create_request).await;
+    create_response.assert_status(StatusCode::OK);
+    
+    // Verify it exists
+    let get_response = server.get("/networks/delete-test-network").await;
+    get_response.assert_status(StatusCode::OK);
+    
+    // Delete the network
+    let delete_response = server.delete("/networks/delete-test-network").await;
+    delete_response.assert_status(StatusCode::OK);
+    delete_response.assert_text("Deleted network 'delete-test-network'");
+    
+    // Verify it's gone
+    let get_after_delete = server.get("/networks/delete-test-network").await;
+    get_after_delete.assert_status(StatusCode::NOT_FOUND);
+}
+
+#[tokio::test]
+async fn test_delete_nonexistent_network() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let response = server.delete("/networks/nonexistent").await;
+    response.assert_status(StatusCode::NOT_FOUND);
+    
+    let error_text = response.text();
+    assert!(error_text.contains("not found"));
+}
+
+#[tokio::test]
+async fn test_ipv6_network_creation_and_retrieval() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let create_request = json!({
+        "name": "ipv6-network",
+        "cidr": "2001:db8::/32"
+    });
+    
+    let create_response = server.post("/networks").json(&create_request).await;
+    create_response.assert_status(StatusCode::OK);
+    
+    // Get the IPv6 network
+    let response = server.get("/networks/ipv6-network").await;
+    response.assert_status(StatusCode::OK);
+    
+    let network: serde_json::Value = response.json();
+    assert_eq!(network["name"], "ipv6-network");
+    assert_eq!(network["netrange"]["type"], "v6");
+    assert_eq!(network["netrange"]["addr"], "2001:db8::");
+    assert_eq!(network["netrange"]["prefix"], 32);
+}
+
+#[tokio::test]
+async fn test_create_duplicate_network() {
+    let (server, _temp_dir) = create_test_app().await;
+    
+    let create_request = json!({
+        "name": "duplicate-network",
+        "cidr": "192.168.50.0/24"
+    });
+    
+    // Create first network
+    let first_response = server.post("/networks").json(&create_request).await;
+    first_response.assert_status(StatusCode::OK);
+    
+    // Try to create duplicate
+    let duplicate_response = server.post("/networks").json(&create_request).await;
+    duplicate_response.assert_status(StatusCode::INTERNAL_SERVER_ERROR);
+    
+    let error_text = duplicate_response.text();
+    assert!(error_text.contains("Failed to create network"));
+}
\ No newline at end of file
diff --git a/crates/libcollar/src/lib.rs b/crates/libcollar/src/lib.rs
index 8f510d2..c7a8024 100644
--- a/crates/libcollar/src/lib.rs
+++ b/crates/libcollar/src/lib.rs
@@ -1,6 +1,9 @@
 mod error;
 pub mod net;
 pub use error::{Error, Result};
 pub use ng;
 mod libcollar;
 pub use libcollar::*;
+
+#[cfg(test)]
+pub use libcollar::new_test;
diff --git a/crates/libcollar/src/libcollar.rs b/crates/libcollar/src/libcollar.rs
index 7064536..118ce13 100644
--- a/crates/libcollar/src/libcollar.rs
+++ b/crates/libcollar/src/libcollar.rs
@@ -1,23 +1,32 @@
 use crate::Result;
 
 use crate::net;
 
 pub struct State {
     leash: net::Leash,
     pub store: store::Store,
 }
 
 pub fn new() -> Result<State> {
     let state = State {
         leash: net::Leash::new(),
         store: store::open()?,
     };
     state.store.namespaces().define("name")?;
     Ok(state)
 }
 
+pub fn new_test(path: &str) -> Result<State> {
+    let state = State {
+        leash: net::Leash::new(),
+        store: store::open_test(path)?,
+    };
+    state.store.namespaces().define("name")?;
+    Ok(state)
+}
+
 impl State {
     pub fn leash(&self) -> &net::Leash {
         &self.leash
     }
 }
diff --git a/crates/store/src/lib.rs b/crates/store/src/lib.rs
index 00faadf..0011967 100644
--- a/crates/store/src/lib.rs
+++ b/crates/store/src/lib.rs
@@ -1,22 +1,24 @@
 mod error;
 mod store;
 
 pub use error::{Result, Error};
 pub use store::Store;
 pub use store::open;
 
+pub use store::open_test;
+
 pub mod namespace;
 pub use namespace::NamespaceStore;
 
 pub mod range;
 pub use range::RangeStore;
 
 pub mod network;
 pub use network::{NetworkStore, RangeAssigner};
 
 pub mod combined;
 pub use combined::{
     Transaction, TransactionContext, 
     TransactionProvider,
     CombinedTransaction, CombinedTransactionContext
 };
diff --git a/crates/store/src/store.rs b/crates/store/src/store.rs
index 879e3d6..64cd918 100644
--- a/crates/store/src/store.rs
+++ b/crates/store/src/store.rs
@@ -1,59 +1,70 @@
 use crate::Result;
 
 #[derive(Debug, Clone)]
 pub struct Db {
     prefix: String,
     db: sled::Db
 }
 
 #[derive(Debug, Clone)]
 pub struct Store {
     db: Db,
     namespaces: crate::namespace::NamespaceStore,
     ranges: crate::range::RangeStore,
     networks: crate::network::NetworkStore,
 }
 
 impl Db {
     pub fn open(path: String, prefix: String) -> Result<Self> {
         let db = sled::open(path)?;
         Ok(Db { prefix, db })
     }
 
     pub fn open_tree(&self, name: &str) -> Result<sled::Tree> {
         Ok(self.db.open_tree(self.tree_path(name))?)
     }
 
     pub fn tree_path(&self, name: &str) -> String {
         format!("t1/{}/{}", self.prefix, name)
     }
 }
 
 pub fn open() -> Result<Store> {
     let db = Db::open("libcollar_store".to_string(), "bonefire".to_string())?;
     let ranges = crate::range::RangeStore::open(&db.db)?;
     Ok(Store {
         namespaces: crate::namespace::NamespaceStore::open(&db.db)?,
         ranges: ranges.clone(),
         networks: crate::network::NetworkStore::open_with_ranges(&db.db, ranges)?,
         db: db,
     })
 }
 
+pub fn open_test(path: &str) -> Result<Store> {
+    let db = Db::open(path.to_string(), "test".to_string())?;
+    let ranges = crate::range::RangeStore::open(&db.db)?;
+    Ok(Store {
+        namespaces: crate::namespace::NamespaceStore::open(&db.db)?,
+        ranges: ranges.clone(),
+        networks: crate::network::NetworkStore::open_with_ranges(&db.db, ranges)?,
+        db: db,
+    })
+}
+
 impl Store {
     fn tree_path(&self, name: &str) -> String {
         self.db.tree_path(name)
     }
 
     pub fn namespaces(&self) -> &crate::namespace::NamespaceStore {
         &self.namespaces
     }
 
     pub fn ranges(&self) -> &crate::range::RangeStore {
         &self.ranges
     }
 
     pub fn networks(&self) -> &crate::network::NetworkStore {
         &self.networks
     }
 }