diff --git a/pkg/config/conf.gen.go b/pkg/config/conf.gen.go
index b3b5f4102..799873c61 100644
--- a/pkg/config/conf.gen.go
+++ b/pkg/config/conf.gen.go
@@ -1,12 +1,13 @@
 // Code generated by baton-sdk. DO NOT EDIT!!!
 package config
 
-import "reflect" 
+import "reflect"
 
 type TemporalCloud struct {
 	ApiKey string `mapstructure:"api-key"`
 	AllowInsecure bool `mapstructure:"allow-insecure"`
 	DefaultAccountRole string `mapstructure:"default-account-role"`
+	BaseUrl string `mapstructure:"base-url"`
 }
 
 func (c *TemporalCloud) findFieldByTag(tagValue string) (any, bool) {
diff --git a/pkg/config/config.go b/pkg/config/config.go
index cffc86438..3761893c1 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -29,12 +29,20 @@ var (
 		field.WithRequired(false),
 	)
 
+	BaseURLField = field.StringField(
+		"base-url",
+		field.WithDescription("Override the Temporal Cloud API URL (for testing)"),
+		field.WithHidden(true),
+		field.WithExportTarget(field.ExportTargetCLIOnly),
+	)
+
 	// ConfigurationFields defines the external configuration required for the
 	// connector to run.
 	ConfigurationFields = []field.SchemaField{
 		APIKeyField,
 		AllowInsecureField,
 		DefaultAccountRoleField,
+		BaseURLField,
 	}
 
 	// FieldRelationships defines relationships between the fields listed in
diff --git a/pkg/connector/connector.go b/pkg/connector/connector.go
index 1af7a79c1..c6527a23c 100644
--- a/pkg/connector/connector.go
+++ b/pkg/connector/connector.go
@@ -84,6 +84,9 @@ func (d *Connector) Validate(ctx context.Context) (annotations.Annotations, erro
 // New returns a new instance of the connector.
 func New(ctx context.Context, tc *cfg.TemporalCloud, opts *cli.ConnectorOpts) (connectorbuilder.ConnectorBuilderV2, []connectorbuilder.Opt, error) {
 	var clientOpts []client.Opt
+	if tc.BaseUrl != "" {
+		clientOpts = append(clientOpts, client.WithAPIAddress(tc.BaseUrl))
+	}
 	if tc.AllowInsecure {
 		clientOpts = append(clientOpts, client.AllowInsecure())
 	}