diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..2ee442f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,52 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  formatting:
+    name: Formatting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - name: Run Clippy
+        run: cargo clippy --workspace --all-targets --all-features --locked -- -D warnings
+
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run tests
+        run: cargo test --workspace --all-features --locked
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b83d222
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target/
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..0479319
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,159 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "once_cell"
+version = "1.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.107"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "985e7ec9bb745e6ce6535b544d84d6cd6f7ad8bd711c398938ae983b91a766d9"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fbf4db142a473a8d80c26bbf18454ed458bf8d26c8219c331daecfdbd079001"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "roadrunner-cli"
+version = "0.1.0"
+dependencies = [
+ "roadrunner-core",
+ "tracing",
+]
+
+[[package]]
+name = "roadrunner-core"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "thiserror",
+ "tracing",
+]
+
+[[package]]
+name = "serde"
+version = "1.0.229"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4148590afebada386688f18773da617792bf2ef03ffc1e4cbd2b1d45b023e0ba"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.229"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67dca2c9c51e58a4791a4b1ed58308b39c64224d349a935ab5039aa360942a48"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.229"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.4",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.119"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "872831b642d1a07999a962a351ed35b955ea2cfc8f3862091e2a240a84f17297"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "syn"
+version = "3.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6275cddf4610d1775e6d1fe9469b2e77d0f39fd98fb7450901b821e0c53649f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "thiserror"
+version = "2.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec86235f5fcc2a73650310756d2ac5b138a5780bbbdfae3eeccec992c435ba4f"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.4",
+]
+
+[[package]]
+name = "tracing"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
+dependencies = [
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-attributes"
+version = "0.1.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "tracing-core"
+version = "0.1.36"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
+dependencies = [
+ "once_cell",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..9f95fff
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,36 @@
+[workspace]
+members = [
+    "crates/roadrunner-cli",
+    "crates/roadrunner-core",
+]
+resolver = "3"
+
+[workspace.package]
+version = "0.1.0"
+edition = "2024"
+rust-version = "1.85"
+publish = false
+
+[workspace.dependencies]
+serde = { version = "1", features = ["derive"] }
+thiserror = "2"
+tracing = "0.1"
+
+[workspace.lints.rust]
+missing_docs = "deny"
+unsafe_code = "forbid"
+unused_lifetimes = "deny"
+unused_qualifications = "deny"
+
+[workspace.lints.rustdoc]
+broken_intra_doc_links = "deny"
+private_intra_doc_links = "deny"
+
+[workspace.lints.clippy]
+all = { level = "deny", priority = -1 }
+pedantic = { level = "deny", priority = -1 }
+dbg_macro = "deny"
+expect_used = "deny"
+todo = "deny"
+unimplemented = "deny"
+unwrap_used = "deny"
diff --git a/crates/roadrunner-cli/Cargo.toml b/crates/roadrunner-cli/Cargo.toml
new file mode 100644
index 0000000..a08c426
--- /dev/null
+++ b/crates/roadrunner-cli/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "roadrunner-cli"
+description = "Command-line interface for Roadrunner"
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+publish.workspace = true
+
+[[bin]]
+name = "roadrunner"
+path = "src/main.rs"
+
+[lints]
+workspace = true
+
+[dependencies]
+roadrunner-core = { path = "../roadrunner-core" }
+tracing.workspace = true
diff --git a/crates/roadrunner-cli/src/main.rs b/crates/roadrunner-cli/src/main.rs
new file mode 100644
index 0000000..f9cc254
--- /dev/null
+++ b/crates/roadrunner-cli/src/main.rs
@@ -0,0 +1,8 @@
+//! Command-line entry point for Roadrunner.
+
+fn main() {
+    tracing::info!(
+        core_version = roadrunner_core::version(),
+        "Roadrunner CLI initialized"
+    );
+}
diff --git a/crates/roadrunner-core/Cargo.toml b/crates/roadrunner-core/Cargo.toml
new file mode 100644
index 0000000..8c93a73
--- /dev/null
+++ b/crates/roadrunner-core/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "roadrunner-core"
+description = "Core domain and routing foundations for Roadrunner"
+version.workspace = true
+edition.workspace = true
+rust-version.workspace = true
+publish.workspace = true
+
+[lints]
+workspace = true
+
+[dependencies]
+serde.workspace = true
+thiserror.workspace = true
+tracing.workspace = true
diff --git a/crates/roadrunner-core/src/lib.rs b/crates/roadrunner-core/src/lib.rs
new file mode 100644
index 0000000..c5034e1
--- /dev/null
+++ b/crates/roadrunner-core/src/lib.rs
@@ -0,0 +1,21 @@
+//! Core domain and routing foundations for Roadrunner.
+//!
+//! Graph types and routing algorithms are intentionally introduced in their
+//! dedicated implementation phases. This crate currently establishes the stable
+//! library boundary shared by Roadrunner's adapters.
+
+/// Returns the version of the Roadrunner core crate.
+#[must_use]
+pub const fn version() -> &'static str {
+    env!("CARGO_PKG_VERSION")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::version;
+
+    #[test]
+    fn reports_the_package_version() {
+        assert_eq!(version(), env!("CARGO_PKG_VERSION"));
+    }
+}
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..92a57c5
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+channel = "stable"
+components = ["clippy", "rustfmt"]
+profile = "minimal"
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..d6155da
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,3 @@
+edition = "2024"
+max_width = 100
+newline_style = "Unix"