diff --git a/chain.schema.json b/chain.schema.json
index 066ebad..1120e32 100644
--- a/chain.schema.json
+++ b/chain.schema.json
@@ -533,6 +533,12 @@
             "$ref": "#/$defs/endpoint"
           }
         },
+        "api": {
+          "type": "array",
+          "items": {
+            "$ref": "#/$defs/endpoint"
+          }
+        },
         "grpc": {
           "type": "array",
           "items": {
diff --git a/devnets/mahalo/chain.json b/devnets/mahalo/chain.json
index 4d814cb..3ca0d7a 100644
--- a/devnets/mahalo/chain.json
+++ b/devnets/mahalo/chain.json
@@ -73,6 +73,12 @@
         "provider": "Foundation"
       }
     ],
+    "api": [
+      {
+        "address": "https://api.mahalo-1.initia.xyz",
+        "provider": "Foundation"
+      }
+    ],
     "grpc": []
   },
   "explorers": [
diff --git a/devnets/minimove/chain.json b/devnets/minimove/chain.json
index 6f9f2ec..ad3e792 100644
--- a/devnets/minimove/chain.json
+++ b/devnets/minimove/chain.json
@@ -70,6 +70,12 @@
         "provider": "Foundation"
       }
     ],
+    "api": [
+      {
+        "address": "https://api.minimove-1.initia.xyz",
+        "provider": "Foundation"
+      }
+    ],
     "grpc": []
   },
   "explorers": [
diff --git a/devnets/miniwasm/chain.json b/devnets/miniwasm/chain.json
index 93b15b4..02dd58b 100644
--- a/devnets/miniwasm/chain.json
+++ b/devnets/miniwasm/chain.json
@@ -70,6 +70,12 @@
         "provider": "Foundation"
       }
     ],
+    "api": [
+      {
+        "address": "https://api.miniwasm-1.initia.xyz",
+        "provider": "Foundation"
+      }
+    ],
     "grpc": []
   },
   "explorers": [