diff --git a/docs/tools/README.md b/docs/tools/README.md
index 0e0899973c4..5e3c1148b9d 100644
--- a/docs/tools/README.md
+++ b/docs/tools/README.md
@@ -99,9 +99,9 @@ requires another Parameter to be specified under the `items` field:
         type: array
         description: A list of airline, ordered by preference. 
         items:
-          - name: name 
-            type: string
-            description: Name of the airline. 
+          name: name 
+          type: string
+          description: Name of the airline. 
 ```
 
 | **field**   |     **type**     | **required** | **description**                                                            |
diff --git a/internal/server/config.go b/internal/server/config.go
index 45388aeba64..e9081fa0024 100644
--- a/internal/server/config.go
+++ b/internal/server/config.go
@@ -176,7 +176,7 @@ func (c *SourceConfigs) UnmarshalYAML(node *yaml.Node) error {
 type AuthSourceConfigs map[string]auth.AuthSourceConfig
 
 // validate interface
-var _ yaml.Unmarshaler = &SourceConfigs{}
+var _ yaml.Unmarshaler = &AuthSourceConfigs{}
 
 func (c *AuthSourceConfigs) UnmarshalYAML(node *yaml.Node) error {
 	*c = make(AuthSourceConfigs)
diff --git a/internal/tools/parameters.go b/internal/tools/parameters.go
index 24eb32cef98..319cb615874 100644
--- a/internal/tools/parameters.go
+++ b/internal/tools/parameters.go
@@ -154,7 +154,7 @@ func parseParamFromNode(node *yaml.Node) (Parameter, error) {
 	var p CommonParameter
 	err := node.Decode(&p)
 	if err != nil {
-		return nil, fmt.Errorf("parameter missing required fields")
+		return nil, fmt.Errorf("parameter missing required fields: %w", err)
 	}
 	switch p.Type {
 	case typeString: