diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c0d57e8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,24 @@
+# Miaomiaomiao
+
+A proxy.
+
+## Usage
+
+```bash
+npm install
+```
+
+then set the environment variable (see code) and 
+
+```bash
+node index
+```
+
+## Limitations
+
+Only Anthropic API format is supported.
+
+Messages will be squashed into question: ... answer: ... format.
+
+File mode will be used when encodeURIComponent(prompt) > 32K
+
diff --git a/index.js b/index.js
index b871eea..47be868 100644
--- a/index.js
+++ b/index.js
@@ -5,9 +5,10 @@ const app = express();
 const axios = require("axios");
 const port = 8080;
 
-(axios.defaults.headers.common["User-Agent"] =
-	"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36"),
-	(axios.defaults.headers.common["Cookie"] = process.env.YOUCOM_COOKIE);
+axios.defaults.headers.common["User-Agent"] =
+	"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36";
+axios.defaults.headers.common["Cookie"] = process.env.YOUCOM_COOKIE;
+
 
 app.post("/v1/messages", (req, res) => {
 	req.rawBody = "";
@@ -227,6 +228,7 @@ app.post("/v1/messages", (req, res) => {
 				throw new Error("Invalid request");
 			}
 		} catch (e) {
+			console.log(e);
 			res.write(JSON.stringify({ error: e.message }));
 			res.end();
 			return;