From 556199670c53248be809cd0e2cc9d624c9e8af2a Mon Sep 17 00:00:00 2001
From: Powerbyte7 <40431794+Powerbyte7@users.noreply.github.com>
Date: Sun, 5 Jul 2026 02:26:27 +0200
Subject: [PATCH] Avoid percent-encoding for "(" and ")" characters.

The VRChat API does not accept percent-encoded variants of InstanceID, specifically the characters "(" and ")". This causes an error when attempting the following API call:
```
https://api.vrchat.cloud/api/1/instances/wrld_28aab3e4-953f-4c85-9223-ef29a0873a6e:31124%7Egroup%28grp_b2a19685-c53e-4c5a-9503-744a5373bf2c%29%7EgroupAccessType%28plus%29%7Eregion%28use%29/shortName
```
```json
{"error":{"message":"\"malformed url\"","status_code":400,"waf_code":26497}}
```

When using the raw string without encoding, the API yields a `200` response as expected.
```
https://vrchat.com/api/1/instances/wrld_28aab3e4-953f-4c85-9223-ef29a0873a6e:31124~group(grp_b2a19685-c53e-4c5a-9503-744a5373bf2c)~groupAccessType(plus)~region(use)/shortName
```
---
 generate.sh                                      | 3 +++
 src/main/java/io/github/vrchatapi/ApiClient.java | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/generate.sh b/generate.sh
index f5760643..a98f91d0 100755
--- a/generate.sh
+++ b/generate.sh
@@ -28,6 +28,9 @@ rm api/ -rf
 # Update Java 7 to Java 8
 sed -i 's/java.version>1.7/java.version>1.8/g' pom.xml
 
+# Avoid percent-encoding for "(" and ")" characters in URI
+sed -i 's/URLEncoder.encode(str, "utf8").replaceAll("\\\\+", "%20")/URLEncoder.encode(str, "utf8").replaceAll("%28", "(").replaceAll("%29", ")").replaceAll("\\\\+", "%20")/g' src/main/java/io/github/vrchatapi/ApiClient.java
+
 # Add global cookie storage
 sed -i '/addNetworkInterceptor/a \
         builder.cookieJar(new io.github.vrchatapi.util.SimpleOkHttpCookieJar());' src/main/java/io/github/vrchatapi/ApiClient.java
diff --git a/src/main/java/io/github/vrchatapi/ApiClient.java b/src/main/java/io/github/vrchatapi/ApiClient.java
index f29684bd..cf562585 100644
--- a/src/main/java/io/github/vrchatapi/ApiClient.java
+++ b/src/main/java/io/github/vrchatapi/ApiClient.java
@@ -793,7 +793,7 @@ public String selectHeaderContentType(String[] contentTypes) {
      */
     public String escapeString(String str) {
         try {
-            return URLEncoder.encode(str, "utf8").replaceAll("\\+", "%20");
+            return URLEncoder.encode(str, "utf8").replaceAll("%28", "(").replaceAll("%29", ")").replaceAll("\\+", "%20");
         } catch (UnsupportedEncodingException e) {
             return str;
         }