diff --git a/README.md b/README.md
index 4dd95ba3c950991721d91b7c127b788157e737cb..016dea693c6ee417b0e9ec43fca16a7ed218b5ff 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,15 @@ # tailproxy
 
 A tiny reverse proxy to expose apps over Tailscale as their own application/service.
 
-## Usage
+## Config
+
+- `hostname`: The tailscale hostname, i.e. "git" would let you use "http://git" assuming you have MagicDNC enabled
+- `auth-key`: Tailscale/tsnet auth key for authenticating with Tailscale
+- `funnel`: Whether to enable as a Tailscale funnel
+- `data-dir`: The tsnet data directory, where things like authentication information/tsnet logs live (default is a `.tailproxy` dir created in the working directory)
+- `port`: The port to *proxy*
+
+## Nix Usage
 
 As a flake: