diff --git a/justfile b/justfile
new file mode 100644
index 0000000..0630076
--- /dev/null
+++ b/justfile
@@ -0,0 +1,57 @@
+# Default recipe
+default:
+    @just --list
+
+# Run all checks (fmt, clippy, docs, test)
+check: fmt clippy docs test
+
+alias f := fmt
+# Format code
+fmt:
+    cargo fmt --all
+
+# Check formatting without modifying
+fmt-check:
+    cargo fmt --all -- --check
+
+# Run clippy
+clippy:
+    cargo clippy --all-targets --all-features -- -D warnings
+
+alias d := docs
+# Build documentation
+docs:
+    RUSTDOCFLAGS="-D warnings" cargo doc --no-deps --all-features
+
+alias t := test
+# Run tests with nextest
+test:
+    cargo nextest run --all-features
+    cargo test --doc
+
+alias b := build
+# Build release binaries
+build:
+    cargo build --release
+
+# Run server (default: x25519 on localhost:4433)
+server mode="x25519" listen="127.0.0.1:4433":
+    cargo run --release --bin server -- --mode {{mode}} --listen {{listen}}
+
+# Run benchmark runner
+runner server mode="x25519" payload="1024" iters="100" warmup="10":
+    cargo run --release --bin runner -- \
+        --server {{server}} \
+        --mode {{mode}} \
+        --payload-bytes {{payload}} \
+        --iters {{iters}} \
+        --warmup {{warmup}}
+
+alias c := clean
+# Clean build artifacts
+clean:
+    cargo clean
+
+# Install dev dependencies
+setup:
+    cargo install cargo-nextest