diff --git a/api/core/ops/entities/config_entity.py b/api/core/ops/entities/config_entity.py
index f2d1bd305..c988bf48d 100644
--- a/api/core/ops/entities/config_entity.py
+++ b/api/core/ops/entities/config_entity.py
@@ -98,6 +98,7 @@ class WeaveConfig(BaseTracingConfig):
     entity: str | None = None
     project: str
     endpoint: str = "https://trace.wandb.ai"
+    host: str | None = None
 
     @field_validator("endpoint")
     @classmethod
@@ -109,6 +110,14 @@ class WeaveConfig(BaseTracingConfig):
 
         return v
 
+    @field_validator("host")
+    @classmethod
+    def validate_host(cls, v, info: ValidationInfo):
+        if v is not None and v != "":
+            if not v.startswith(("https://", "http://")):
+                raise ValueError("host must start with https:// or http://")
+        return v
+
 
 OPS_FILE_PATH = "ops_trace/"
 OPS_TRACE_FAILED_KEY = "FAILED_OPS_TRACE"
diff --git a/api/core/ops/ops_trace_manager.py b/api/core/ops/ops_trace_manager.py
index dc4cfc48d..e0dfe0c31 100644
--- a/api/core/ops/ops_trace_manager.py
+++ b/api/core/ops/ops_trace_manager.py
@@ -81,7 +81,7 @@ class OpsTraceProviderConfigMap(dict[str, dict[str, Any]]):
                 return {
                     "config_class": WeaveConfig,
                     "secret_keys": ["api_key"],
-                    "other_keys": ["project", "entity", "endpoint"],
+                    "other_keys": ["project", "entity", "endpoint", "host"],
                     "trace_instance": WeaveDataTrace,
                 }
 
diff --git a/api/core/ops/weave_trace/weave_trace.py b/api/core/ops/weave_trace/weave_trace.py
index cfc8a505b..3917348a9 100644
--- a/api/core/ops/weave_trace/weave_trace.py
+++ b/api/core/ops/weave_trace/weave_trace.py
@@ -40,9 +40,14 @@ class WeaveDataTrace(BaseTraceInstance):
         self.weave_api_key = weave_config.api_key
         self.project_name = weave_config.project
         self.entity = weave_config.entity
+        self.host = weave_config.host
+
+        # Login with API key first, including host if provided
+        if self.host:
+            login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True, host=self.host)
+        else:
+            login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True)
 
-        # Login with API key first
-        login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True)
         if not login_status:
             logger.error("Failed to login to Weights & Biases with the provided API key")
             raise ValueError("Weave login failed")
@@ -386,7 +391,11 @@ class WeaveDataTrace(BaseTraceInstance):
 
     def api_check(self):
         try:
-            login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True)
+            if self.host:
+                login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True, host=self.host)
+            else:
+                login_status = wandb.login(key=self.weave_api_key, verify=True, relogin=True)
+
             if not login_status:
                 raise ValueError("Weave login failed")
             else:
diff --git a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/provider-config-modal.tsx b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/provider-config-modal.tsx
index c0b52a9b1..b6c97add4 100644
--- a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/provider-config-modal.tsx
+++ b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/provider-config-modal.tsx
@@ -55,6 +55,7 @@ const weaveConfigTemplate = {
   entity: '',
   project: '',
   endpoint: '',
+  host: '',
 }
 
 const ProviderConfigModal: FC<Props> = ({
@@ -226,6 +227,13 @@ const ProviderConfigModal: FC<Props> = ({
                             onChange={handleConfigChange('endpoint')}
                             placeholder={'https://trace.wandb.ai/'}
                           />
+                          <Field
+                            label='Host'
+                            labelClassName='!text-sm'
+                            value={(config as WeaveConfig).host}
+                            onChange={handleConfigChange('host')}
+                            placeholder={'https://api.wandb.ai'}
+                          />
                         </>
                       )}
                       {type === TracingProvider.langSmith && (
diff --git a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/type.ts b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/type.ts
index 386c58974..ed468caf6 100644
--- a/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/type.ts
+++ b/web/app/(commonLayout)/app/(appDetailLayout)/[appId]/overview/tracing/type.ts
@@ -29,4 +29,5 @@ export type WeaveConfig = {
   entity: string
   project: string
   endpoint: string
+  host: string
 }