diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..f5dbe239
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.idea/
+/target
+.repl_history
diff --git a/.repl_history b/.repl_history
new file mode 100644
index 00000000..5487528c
--- /dev/null
+++ b/.repl_history
@@ -0,0 +1,4 @@
+#V2
+interface
+call aquamarine invoke ["asd", ["a", "b"]]
+call aquamarine invoke ["asd", "a"]
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000..d89e379f
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,228 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "aquamarine"
+version = "0.1.0"
+dependencies = [
+ "fluence",
+ "log",
+]
+
+[[package]]
+name = "cfg-if"
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+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "fluence"
+version = "0.2.4"
+source = "git+https://github.com/fluencelabs/rust-sdk#75f4baaa905255b240d191880aeeed3e7ec1ad4f"
+dependencies = [
+ "fluence-sdk-macro",
+ "fluence-sdk-main",
+ "safe-transmute",
+]
+
+[[package]]
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+source = "git+https://github.com/fluencelabs/rust-sdk#75f4baaa905255b240d191880aeeed3e7ec1ad4f"
+dependencies = [
+ "fluence-sdk-wit",
+]
+
+[[package]]
+name = "fluence-sdk-main"
+version = "0.2.4"
+source = "git+https://github.com/fluencelabs/rust-sdk#75f4baaa905255b240d191880aeeed3e7ec1ad4f"
+dependencies = [
+ "fluence-sdk-macro",
+ "log",
+ "serde",
+]
+
+[[package]]
+name = "fluence-sdk-wit"
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+source = "git+https://github.com/fluencelabs/rust-sdk#75f4baaa905255b240d191880aeeed3e7ec1ad4f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_json",
+ "syn",
+ "uuid",
+]
+
+[[package]]
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+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
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+
+[[package]]
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+ "cfg-if",
+]
+
+[[package]]
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+
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+ "unicode-xid",
+]
+
+[[package]]
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+ "proc-macro2",
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+dependencies = [
+ "getrandom",
+ "libc",
+ "rand_chacha",
+ "rand_core",
+ "rand_hc",
+]
+
+[[package]]
+name = "rand_chacha"
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+ "ppv-lite86",
+ "rand_core",
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
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+ "getrandom",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
+dependencies = [
+ "rand_core",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+checksum = "164eacbdb13512ec2745fb09d51fd5b22b0d65ed294a1dcf7285a360c80a675c"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6690e3e9f692504b941dc6c3b188fd28df054f7fb8469ab40680df52fdcc842b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
+
+[[package]]
+name = "uuid"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9fde2f6a4bea1d6e007c4ad38c6839fa71cbb63b6dbf5b595aa38dc9b1093c11"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "wasi"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 00000000..ef82ae20
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "aquamarine"
+version = "0.1.0"
+authors = ["Fluence Labs"]
+edition = "2018"
+
+[[bin]]
+name = "aquamarine"
+path = "src/main.rs"
+
+[dependencies]
+fluence = { git = "https://github.com/fluencelabs/rust-sdk", features = ["logger"] }
+log = "0.4.11"
diff --git a/Config.toml b/Config.toml
new file mode 100644
index 00000000..935deda1
--- /dev/null
+++ b/Config.toml
@@ -0,0 +1,6 @@
+modules_dir = "artifacts/"
+
+[[module]]
+    name = "aquamarine"
+    mem_pages_count = 100
+    logger_enabled = true
diff --git a/artifacts/aquamarine.wasm b/artifacts/aquamarine.wasm
new file mode 100755
index 00000000..d4611fb4
Binary files /dev/null and b/artifacts/aquamarine.wasm differ
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 00000000..9e57a1a4
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2020 Fluence Labs Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+use fluence::fce;
+use log::info;
+
+pub fn main() {
+    fluence::WasmLogger::init_with_level(log::Level::Info).unwrap();
+}
+
+#[fce]
+pub struct StepperOutcome {
+    pub aqua: String,
+    pub next_peer_pks: Vec<String>,
+}
+
+#[fce]
+pub fn invoke(init_user_id: String, aqua: String) -> StepperOutcome {
+    info!("stepper invoked with user_id = {}, aqua = {:?}", init_user_id, aqua);
+
+    let outcome = StepperOutcome {
+        aqua,
+        next_peer_pks: vec![init_user_id]
+    };
+
+    outcome
+}