diff --git a/Cargo.lock b/Cargo.lock
index 33091c0..a05bcb2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -174,7 +174,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf4c2f4e1afd912bc40bfd6fed5d9dc1f288e0ba01bfcc835cc5bc3eb13efe15"
 dependencies = [
  "generic-array",
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
  "zeroize",
 ]
@@ -286,7 +286,7 @@ dependencies = [
  "generic-array",
  "group",
  "pkcs8",
- "rand_core",
+ "rand_core 0.6.4",
  "sec1",
  "subtle",
  "zeroize",
@@ -304,7 +304,7 @@ version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
 ]
 
@@ -314,6 +314,12 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0870c84016d4b481be5c9f323c24f65e31e901ae618f0e80f4308fb00de1d2d"
 
+[[package]]
+name = "fuchsia-cprng"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
+
 [[package]]
 name = "futures-core"
 version = "0.3.28"
@@ -373,7 +379,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0f9ef7462f7c099f518d754361858f86d8a07af53ba9af0fe635bbccb151a63"
 dependencies = [
  "ff",
- "rand_core",
+ "rand_core 0.6.4",
  "subtle",
 ]
 
@@ -485,9 +491,13 @@ version = "0.1.0"
 dependencies = [
  "bincode",
  "clap",
+ "hex-literal",
  "keyfork-derive-util",
  "keyfork-frame",
+ "keyforkd",
+ "tempdir",
  "thiserror",
+ "tokio",
 ]
 
 [[package]]
@@ -674,6 +684,34 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "552840b97013b1a26992c11eac34bdd778e464601a4c2054b5f0bff7c6761293"
+dependencies = [
+ "fuchsia-cprng",
+ "libc",
+ "rand_core 0.3.1",
+ "rdrand",
+ "winapi",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
+dependencies = [
+ "rand_core 0.4.2",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
+
 [[package]]
 name = "rand_core"
 version = "0.6.4"
@@ -683,6 +721,15 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "rdrand"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
+dependencies = [
+ "rand_core 0.3.1",
+]
+
 [[package]]
 name = "regex"
 version = "1.9.3"
@@ -727,6 +774,15 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
 
+[[package]]
+name = "remove_dir_all"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "ripemd"
 version = "0.1.3"
@@ -843,7 +899,7 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e1788eed21689f9cf370582dfc467ef36ed9c707f073528ddafa8d83e3b8500"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.4",
 ]
 
 [[package]]
@@ -895,6 +951,16 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tempdir"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
+dependencies = [
+ "rand",
+ "remove_dir_all",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.48"
diff --git a/keyfork-seed/Cargo.toml b/keyfork-seed/Cargo.toml
index 161bd02..5829ee5 100644
--- a/keyfork-seed/Cargo.toml
+++ b/keyfork-seed/Cargo.toml
@@ -11,3 +11,9 @@ clap = { version = "4.4.2", default-features = false, features = ["std", "usage"
 keyfork-derive-util = { version = "0.1.0", path = "../keyfork-derive-util" }
 keyfork-frame = { version = "0.1.0", path = "../keyfork-frame", default-features = false }
 thiserror = "1.0.48"
+
+[dev-dependencies]
+hex-literal = "0.4.1"
+keyforkd = { path = "../keyforkd", default-features = false }
+tempdir = "0.3.7"
+tokio = { version = "1.32.0", features = ["rt", "rt-multi-thread"] }
diff --git a/keyfork-seed/src/main.rs b/keyfork-seed/src/main.rs
index 12f253c..ff79e54 100644
--- a/keyfork-seed/src/main.rs
+++ b/keyfork-seed/src/main.rs
@@ -5,6 +5,9 @@ use std::path::PathBuf;
 mod cli;
 mod socket;
 
+#[cfg(test)]
+mod tests;
+
 #[derive(Debug, thiserror::Error)]
 pub enum Error {
     #[error("The first argument to the command should be a derivation path")]
diff --git a/keyfork-seed/src/tests.rs b/keyfork-seed/src/tests.rs
new file mode 100644
index 0000000..6616100
--- /dev/null
+++ b/keyfork-seed/src/tests.rs
@@ -0,0 +1,37 @@
+use hex_literal::hex;
+use keyfork_derive_util::{request::*, DerivationPath};
+use keyfork_frame::*;
+use std::{os::unix::net::UnixStream, str::FromStr};
+use tempdir::TempDir;
+use tokio::runtime::Builder;
+
+#[test]
+fn it_works() {
+    // Test literals taken from keyfork-derive-util.
+    let entropy = &hex!("000102030405060708090a0b0c0d0e0f")[..];
+    let mnemonic = keyforkd::Mnemonic::from_entropy(entropy, Default::default()).unwrap();
+    let rt = Builder::new_multi_thread().enable_io().build().unwrap();
+    let tempdir = TempDir::new("keyfork-seed").unwrap();
+    let socket_path = tempdir.path().join("keyforkd.sock");
+    let handle = rt.spawn({
+        let socket_path = socket_path.clone();
+        async move {
+            keyforkd::start_and_run_server_on(mnemonic, &socket_path)
+                .await
+                .unwrap();
+        }
+    });
+    // TODO: send a channel to start_and_run_server_on, or extract logic out of server,
+    // so we can send a "started" message back to main thread.
+    std::thread::sleep(std::time::Duration::from_secs(2));
+    let mut socket = UnixStream::connect(&socket_path).unwrap();
+    let req = DerivationRequest::new(
+        DerivationAlgorithm::Ed25519,
+        DerivationPath::from_str("m/0'/1'/2'/2'/1000000000'").unwrap(),
+    );
+    try_encode_to(&bincode::serialize(&req).unwrap(), &mut socket).unwrap();
+    let response: DerivationResponse =
+        bincode::deserialize(&try_decode_from(&mut socket).unwrap()).unwrap();
+    assert_eq!(response.data, hex!("8f94d394a8e8fd6b1bc2f3f49f5c47e385281d5c17e65324b0f62483e37e8793"));
+    handle.abort();
+}