diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b86b0bd
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+trim_trailing_whitespace = true
+max_line_length = 80
+indent_size = 4
+
+[Makefile]
+indent_style = tab
+
+[*.{json,ron,yaml}]
+max_line_length = 120
+indent_size = 2
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a9d37c5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+target
+Cargo.lock
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..80cfddc
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,9 @@
+{
+  "recommendations": [
+    "EditorConfig.EditorConfig",
+    "serayuzgur.crates",
+    "rust-lang.rust-analyzer",
+    "ms-azuretools.vscode-docker",
+    "kokakiwi.vscode-just"
+  ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..aa4119b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+  "rust-analyzer.hover.actions.references.enable": true,
+  "rust-analyzer.check.command": "clippy",
+  "rust-analyzer.linkedProjects": [
+    "./Cargo.toml"
+  ]
+}
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..7a60c2c
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,50 @@
+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "label": "setup",
+      "linux": {
+        "command": "just",
+        "args": ["setup"],
+      },
+      "type": "shell",
+      "group": "build",
+    },
+    {
+      "label": "test",
+      "linux": {
+        "command": "just",
+        "args": ["test"],
+      },
+      "type": "shell",
+      "group": "test",
+    },
+    {
+      "label": "build",
+      "linux": {
+        "command": "just",
+        "args": ["build-dev"],
+      },
+      "type": "shell",
+      "group": "build",
+    },
+    {
+      "label": "install",
+      "linux": {
+        "command": "just",
+        "args": ["install-dev"],
+      },
+      "type": "shell",
+      "group": "build",
+    },
+    {
+      "label": "lint",
+      "linux": {
+        "command": "just",
+        "args": ["lint-dev"],
+      },
+      "type": "shell",
+      "group": "test",
+    },
+  ]
+}
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..8819475
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,6 @@
+[workspace]
+resolver = "2"
+members = [
+    "lib",
+    "cli",
+]
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..1fe91e6
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,24 @@
+# syntax=docker/dockerfile:1
+FROM messense/cargo-zigbuild:latest AS base
+
+RUN mkdir /io
+RUN echo "installing just..."
+RUN curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin
+
+FROM base AS just
+RUN echo "just installed."
+
+RUN echo "copying src..."
+COPY --link Cargo.toml /io/.
+COPY --link Cargo.lock /io/.
+COPY --link cli /io/.
+COPY --link lib /io/.
+COPY --link Justfile /io/.
+
+FROM just AS loaded
+RUN echo "src copied."
+
+RUN echo "building binaries..."
+WORKDIR /io
+
+RUN /usr/local/bin/just build
diff --git a/Justfile b/Justfile
new file mode 100644
index 0000000..27a71e7
--- /dev/null
+++ b/Justfile
@@ -0,0 +1,106 @@
+default: build-dev
+
+
+alias b := build-dev
+alias i := install-dev
+alias l := lint-dev
+
+
+export RUST_BACKTRACE := "1"
+export RUST_LOG := "debug"
+
+
+cli := "openproject-cli"
+lib := "libOpenProject.so"
+target_dev := if os() == "linux" {
+    "x86_64-unknown-linux-gnu"
+} else if os() == "mac" {
+    "universal2-apple-darwin"
+} else {
+    error("Unsupported OS: {{ os() }}; only supporting {{ supported_os }}")
+}
+# TODO: replace with command in backticks; figure out why x86_64-unknown-linux-gnu breaks
+# https://just.systems/man/en/chapter_33.html#command-evaluation-using-backticks
+target_release := """
+    aarch64-apple-darwin
+    aarch64-unknown-linux-gnu
+    universal2-apple-darwin
+    x86_64-apple-darwin
+    x86_64-unknown-linux-gnu
+"""
+
+
+set ignore-comments
+set shell := ["bash", "-c"]
+
+
+# build for the local machine
+build-dev: install-rustup zigbuild setup lint-dev
+    @echo "Compiling development binaries for target: {{ target_dev }}"
+    cargo zigbuild --target {{ target_dev }}
+
+# build for all supported targets in docker
+build: setup
+    @echo "Cross-compiling binaries..."
+    @for target in $(echo "{{ target_release }}" | sed "s/\n/ /g"); do \
+        echo "Compiling release binaries for target: ${target}"; \
+        cargo zigbuild --release --target ${target}; \
+    done
+    echo "Compilation completed";
+
+
+# install the cli and library to the local machine
+install-dev: build-dev
+    # https://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#:~:text=3.1.1.%20Shared%20Library%20Names
+    install -Dm755 target/{{ cli }} /bin/{{ cli }}
+    install -Dm755 target/{{ lib }} /usr/lib/{{ lib }}
+
+# Install rustup if rustc or cargo are not installed
+install-rustup:
+    @if command -v rustc &> /dev/null || command -v cargo &> /dev/null; then \
+        echo "Rustc and Cargo are already installed"; \
+    else \
+        echo "Installing rustup (rustc & cargo)"; \
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh; \
+    fi
+
+check:
+    cargo fmt -- --check
+
+lint:
+    cargo clippy --all-targets --all-features -- -D warnings
+
+# lint with pedantic warnings
+lint-dev: check
+    cargo clippy --all-targets --all-features -- -D warnings -W clippy::pedantic
+    cargo clippy --fix
+
+publish: test
+    cargo publish
+
+# build and publish to crates.io
+release: build publish
+
+# install rustup, rustc, cargo, and cross-compilation targets
+setup:
+    @echo "Setup"
+    @for target in $(echo "{{ target_release }}" | sed "s/\n/ /g"); do \
+        if [[ ${target} =~ "universal" ]]; then \
+            echo "Skipping toolchain installation for: ${target}"; \
+            continue; \
+        fi; \
+        echo "Adding toolchain and build target: ${target}"; \
+        rustup toolchain install --force-non-host stable-${target} --component clippy; \
+        rustup target add --toolchain stable-${target} ${target}; \
+        echo "Finished ${target}" && echo ""; \
+    done
+
+test:
+    cargo test
+
+zigbuild:
+    echo "Installing cargo-zigbuild"
+    @if ! command -v "cargo install cargo-zigbuild" &> /dev/null; then \
+        echo "Installing cargo-zigbuild"; \
+        cargo install cargo-zigbuild; \
+    fi
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
new file mode 100644
index 0000000..daded3c
--- /dev/null
+++ b/cli/Cargo.toml
@@ -0,0 +1,32 @@
+[package]
+name = "openproject-cli"
+version = "0.1.0"
+repository = ""
+homepage = ""
+license = "GPL-3.0-only"
+authors = [
+    "Christoph Kröppl <ch.kroeppl@gmx.at>",
+    "HMG Software LLC <git@hmg.software>",
+]
+edition = "2021"
+keywords = ["cli", "client", "op", "openproject"]
+categories = ["command-line-utilities", "database"]
+
+[dependencies]
+clap = "4"
+
+[dev-dependencies]
+clippy = "*"
+
+[build-dependencies]
+cargo-zigbuild = "0"
+
+[[bin]]
+name = "openproject-cli"
+path = "src/main.rs"
+
+[profile.release]
+codegen-units = 1
+lto = true
+strip = true
+debug = false
diff --git a/cli/src/main.rs b/cli/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/cli/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
new file mode 100644
index 0000000..b0fe3a7
--- /dev/null
+++ b/lib/Cargo.toml
@@ -0,0 +1,31 @@
+[package]
+name = "openproject-c-abi"
+version = "0.1.0"
+repository = ""
+homepage = ""
+license = "GPL-3.0-only"
+authors = [
+    "Christoph Kröppl <ch.kroeppl@gmx.at>",
+    "HMG Software LLC <git@hmg.software>",
+]
+edition = "2021"
+keywords = ["abi", "ffi", "lib", "op", "openproject"]
+categories = ["development-tools", "database"]
+
+[dependencies]
+reqwest = "0"
+
+[dev-dependencies]
+clippy = "*"
+
+[build-dependencies]
+cargo-zigbuild = "0"
+
+[[bin]]
+name = "libopc"
+path = "src/main.rs"
+
+[profile.release]
+codegen-units = 1
+lto = true
+strip = true
diff --git a/lib/src/main.rs b/lib/src/main.rs
new file mode 100644
index 0000000..6ca9d92
--- /dev/null
+++ b/lib/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("lol");
+}