diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..c624a68
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,89 @@
+# Continuous integration for wl-webrtc.
+#
+# Triggered on push/PR to master. Runs the full quality gate that the recent
+# audit baselined:
+#   - clippy: 0 errors (undocumented_unsafe_blocks is deny in Cargo.toml; other
+#     warnings are advisory for now).
+#   - build --release: integration tests in tests/integration_test.rs shell out
+#     to target/release/wl-webrtc, so the release binary must exist before tests
+#     run.
+#   - test --release: 79 unit + 3 integration; the 1 hardware-ignored test
+#     stays ignored in CI (needs Wayland session + VAAPI GPU).
+#   - cargo audit: separate job so a RUSTSEC advisory fails the build without
+#     conflating with compile errors.
+#
+# The job pins Linux only — the project is Wayland/VAAPI-specific and has no
+# macOS/Windows story. Oracle audit 2026-06-28 P2 plan.
+
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+env:
+  CARGO_TERM_COLOR: always
+  # Build dependencies match shell.nix + README Prerequisites section.
+  LIBCLANG_PATH: /usr/lib/llvm-14/lib
+
+jobs:
+  build-test:
+    name: Build + Clippy + Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain (stable)
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            ffmpeg \
+            libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libva-dev \
+            libwayland-dev wayland-protocols \
+            libdrm-dev \
+            libpipewire-0.3-dev \
+            libclang-dev llvm-14
+
+      - name: Cache cargo registry + build artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock', 'Cargo.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Clippy (release, all targets)
+        run: cargo clippy --release --all-targets
+
+      - name: Build release (required before tests)
+        run: cargo build --release --all-targets
+
+      - name: Test (release)
+        run: cargo test --release
+
+  audit:
+    name: Security audit (RUSTSEC)
+    runs-on: ubuntu-latest
+    # Keep separate from build-test so a vulnerability advisory fails the
+    # check independently of compile state.
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain (stable)
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install cargo-audit
+        run: cargo install cargo-audit --locked
+
+      - name: Audit dependencies
+        run: cargo audit --deny warnings
diff --git a/Cargo.toml b/Cargo.toml
index ed846ad..68dfa8f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,10 @@
 name = "wl-webrtc"
 version = "0.1.0"
 edition = "2021"
+# Matches README's "Rust toolchain (1.70+)". Pinning rust-version prevents
+# building on toolchains older than we've actually tested, and gives cargo
+# a useful error message instead of a parse/error cascade.
+rust-version = "1.70"
 description = "Wayland screen capture and encoding tool"
 
 [dependencies]