diff --git a/Cargo.toml b/Cargo.toml
index 066cf29..992a862 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,16 +1,18 @@
 [package]
-name = "{{project-name}}"
+name = "tci"
 version = "0.1.0"
 edition = "2021"
 authors = [ "alemi <me@alemi.dev>" ]
 readme = "README.md"
-#description = ""
-#keywords = []
+description = "tiny custom CI runner for your selfhosted just-git repositories"
+keywords = ["git", "ci", "workflows", "minimal", "selfhosted"]
+repository = "https://git.alemi.dev/tci.git"
 #documentation = ""
-#repository = "https://git.alemi.dev/{{project-name}}"
 #license = "LICENSE"
 
 [dependencies]
+git2 = "0.18.2"
+tempdir = "0.3.7"
 
 [dev-dependencies]
 
diff --git a/src/main.rs b/src/main.rs
index d2b475e..828b059 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,58 @@
+use git2::{Config, Repository};
 
 fn main() {
-	println!("Hello, world!");
+	// println!("{:?}", std::env::args());
+	// println!("{}", std::env::current_dir().unwrap().display());
+	// for (key, value) in std::env::vars() {
+	// 	println!("{key}: \t{value}");
+	// }
+
+	let callback = std::path::Path::new(&std::env::args().next().expect("no argv0??"))
+		.file_name()
+		.expect("path terminates with '...'")
+		.to_str()
+		.expect("could not represent OsStr")
+		.to_string();
+
+	let repo_path = std::env::current_dir()
+		.expect("not in a directory???");
+
+	let repo_name = repo_path
+		.parent()
+		.expect("in root???")
+		.file_name()
+		.expect("path terminates with '...'")
+		.to_str()
+		.expect("could not represent OsStr")
+		.to_string();
+
+	// check config before even creating temp dir and cloning repo
+	let cfg = Config::open(&repo_path.join("config")).expect("could not read git config");
+	let Ok(true) = cfg.get_bool("tci.allow") else {
+		std::process::exit(0);
+	};
+
+	let tmp = tempdir::TempDir::new(&format!("tci-{repo_name}")).expect("could not create tempdir");
+
+	let repo = Repository::clone(repo_path.to_str().unwrap(), tmp.path()).expect("could not clone repository");
+	std::env::set_current_dir(tmp.path()).expect("could not change directory");
+
+	println!("[+] running tci hook [{callback}] for repo '{repo_name}'");
+	let tci_script = cfg.get_str("tci.script").unwrap_or(".tci").to_string();
+
+	if !tmp.path().join(&tci_script).is_file() {
+		println!("[?] tci enabled for repo, but no .tci script found");
+		std::process::exit(1);
+	}
+
+	let output = std::process::Command::new(tmp.path().join(&tci_script)).output().expect("could not run tci script");
+
+	match std::str::from_utf8(&output.stdout) {
+		Ok(s) => println!("{s}"),
+		Err(e) => {
+			println!("[?] script produced non-utf8 output ({e}), showing as bytes");
+			println!("{:?}", output.stdout);
+		},
+	}
+	
 }