diff --git a/src/telliot_core/apps/core.py b/src/telliot_core/apps/core.py
index 046b228b..378ad2ea 100644
--- a/src/telliot_core/apps/core.py
+++ b/src/telliot_core/apps/core.py
@@ -82,6 +82,7 @@
     842: "taraxa testnet",
     808813: "taraxa testnet",
     534352: "scroll",
+    8453: "base",
 }
 
 LOGLEVEL_MAP = {
diff --git a/src/telliot_core/data/contract_directory.json b/src/telliot_core/data/contract_directory.json
index 4a3065c1..6ed44401 100644
--- a/src/telliot_core/data/contract_directory.json
+++ b/src/telliot_core/data/contract_directory.json
@@ -157,7 +157,8 @@
       "2340": "0xC866DB9021fe81856fF6c5B3E3514BF9D1593D81",
       "842": "0xC866DB9021fe81856fF6c5B3E3514BF9D1593D81",
       "808813": "0xC866DB9021fe81856fF6c5B3E3514BF9D1593D81",
-      "534352": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc"
+      "534352": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc",
+      "8453": "0x34Fae97547E990ef0E05e05286c51E4645bf1A85"
     },
     "abi_file": "tellor360-oracle-abi.json"
   },
@@ -212,7 +213,8 @@
       "2340": "0x89e44099f5E80484dcF48995080481214b9c2D7c",
       "842": "0x89e44099f5E80484dcF48995080481214b9c2D7c",
       "808813": "0x89e44099f5E80484dcF48995080481214b9c2D7c",
-      "534352": "0x9EA18BFDB50E9bb4A18F9d3Df7804E398F8fE0dc"
+      "534352": "0x9EA18BFDB50E9bb4A18F9d3Df7804E398F8fE0dc",
+      "8453": "0x6684E5DdbEe1b97E10847468cB5f4e38f3aB83FE"
     },
     "abi_file": "tellor360-autopay-abi.json"
   },
@@ -272,7 +274,8 @@
       "2340": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc",
       "842": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc",
       "808813": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc",
-      "534352": "0xfda87943Be918360413979ce7296E1249fcb987e"
+      "534352": "0xfda87943Be918360413979ce7296E1249fcb987e",
+      "8453": "0xF8e9E61FFB2b491f7DF29823a76009743671CD96"
     },
     "abi_file": "trb-token-abi.json"
   },
@@ -427,7 +430,8 @@
       "2340": "0x6684E5DdbEe1b97E10847468cB5f4e38f3aB83FE",
       "842": "0x6684E5DdbEe1b97E10847468cB5f4e38f3aB83FE",
       "808813": "0x6684E5DdbEe1b97E10847468cB5f4e38f3aB83FE",
-      "534352": "0xC866DB9021fe81856fF6c5B3E3514BF9D1593D81"
+      "534352": "0xC866DB9021fe81856fF6c5B3E3514BF9D1593D81",
+      "8453": "0x896419Ed2E0dC848a1f7d2814F4e5Df4b9B9bFcc"
     },
     "abi_file": "tellor-governance-abi.json"
   }
diff --git a/src/telliot_core/directory.py b/src/telliot_core/directory.py
index 7baf497b..b5b3d370 100644
--- a/src/telliot_core/directory.py
+++ b/src/telliot_core/directory.py
@@ -137,6 +137,8 @@ def get_abi(self, chain_id: int = 0, api_key: str = "") -> list[Any]:
                     url = "https://bob-sepolia.explorer.gobob.xyz/"
                 elif chain_id == 534352:
                     url = "https://rpc.scroll.io"
+                elif chain_id == 8453:
+                    url = "https://base.llamarpc.com"
                 else:
                     raise ValueError(f"Could not retrieve ABI using chain_id {chain_id}")
 
diff --git a/src/telliot_core/model/chain.py b/src/telliot_core/model/chain.py
index b3213f07..5701d85d 100644
--- a/src/telliot_core/model/chain.py
+++ b/src/telliot_core/model/chain.py
@@ -374,6 +374,13 @@ class Chain(Base):
         network="mainnet",
         currency=EVMCurrency(name="Ether", symbol="ETH", decimals=18),
     ),
+    Chain(
+        chain_id=8453,
+        name="Base",
+        chain="base",
+        network="mainnet",
+        currency=EVMCurrency(name="Ether", symbol="ETH", decimals=18),
+    ),
 ]
 
 
diff --git a/src/telliot_core/model/endpoints.py b/src/telliot_core/model/endpoints.py
index 1be31547..39066708 100644
--- a/src/telliot_core/model/endpoints.py
+++ b/src/telliot_core/model/endpoints.py
@@ -444,6 +444,13 @@ def connect(self) -> bool:
         url="https://rpc.scroll.io",
         explorer="https://rpc.scroll.io",
     ),
+    RPCEndpoint(
+        chain_id=8453,
+        provider="Base",
+        network="mainnet",
+        url="https://base.llamarpc.com",
+        explorer="https://basescan.org",
+    ),
 ]