diff --git a/docs/docs/configuration/advanced/system.md b/docs/docs/configuration/advanced/system.md
index 5f73ccd23b..14979698c7 100644
--- a/docs/docs/configuration/advanced/system.md
+++ b/docs/docs/configuration/advanced/system.md
@@ -72,10 +72,10 @@ Variables prefixed with `FRIGATE_` can be referenced in config fields that suppo
 
 Navigate to <NavPath path="Settings > System > Environment variables" /> to add or edit environment variables.
 
-| Field     | Description                                               |
-| --------- | --------------------------------------------------------- |
-| **Key**   | The environment variable name (e.g., `FRIGATE_MQTT_USER`) |
-| **Value** | The value for the variable                                |
+| Field             | Description                                               |
+| ----------------- | --------------------------------------------------------- |
+| **Variable name** | The environment variable name (e.g., `FRIGATE_MQTT_USER`) |
+| **Value**         | The value for the variable                                |
 
 Variables defined here can be referenced elsewhere in your configuration using the `{FRIGATE_VARIABLE_NAME}` syntax.
 
diff --git a/web/public/locales/en/views/settings.json b/web/public/locales/en/views/settings.json
index 15f73f81f8..68248241ce 100644
--- a/web/public/locales/en/views/settings.json
+++ b/web/public/locales/en/views/settings.json
@@ -1490,7 +1490,14 @@
       "keyLabel": "Key",
       "valueLabel": "Value",
       "keyPlaceholder": "New key",
-      "remove": "Remove"
+      "remove": "Remove",
+      "providerNameLabel": "Provider name",
+      "providerNamePlaceholder": "e.g., openai",
+      "variableNameLabel": "Variable name",
+      "variableNamePlaceholder": "e.g., MY_VARIABLE",
+      "loggerNameLabel": "Logger name",
+      "loggerNamePlaceholder": "e.g., frigate.record",
+      "keyPatternError": "Use only letters, numbers, hyphens, and underscores (no spaces)"
     },
     "knownPlates": {
       "namePlaceholder": "e.g., Wife's Car",
diff --git a/web/src/components/config-form/section-configs/environment_vars.ts b/web/src/components/config-form/section-configs/environment_vars.ts
index 969095d075..21048ce35d 100644
--- a/web/src/components/config-form/section-configs/environment_vars.ts
+++ b/web/src/components/config-form/section-configs/environment_vars.ts
@@ -7,7 +7,13 @@ const environmentVars: SectionConfigOverrides = {
     advancedFields: [],
     uiSchema: {
       additionalProperties: {
-        "ui:options": { size: "lg" },
+        "ui:options": {
+          size: "lg",
+          additionalPropertyKeyLabel:
+            "configForm.additionalProperties.variableNameLabel",
+          additionalPropertyKeyPlaceholder:
+            "configForm.additionalProperties.variableNamePlaceholder",
+        },
       },
     },
   },
diff --git a/web/src/components/config-form/section-configs/genai.ts b/web/src/components/config-form/section-configs/genai.ts
index c5645cbbad..552e85c316 100644
--- a/web/src/components/config-form/section-configs/genai.ts
+++ b/web/src/components/config-form/section-configs/genai.ts
@@ -9,7 +9,15 @@ const genai: SectionConfigOverrides = {
     uiSchema: {
       "ui:options": { disableNestedCard: true },
       "*": {
-        "ui:options": { disableNestedCard: true },
+        "ui:options": {
+          disableNestedCard: true,
+          additionalPropertyKeyLabel:
+            "configForm.additionalProperties.providerNameLabel",
+          additionalPropertyKeyPlaceholder:
+            "configForm.additionalProperties.providerNamePlaceholder",
+          additionalPropertyKeyPattern: "^[a-zA-Z0-9_-]+$",
+          preventKeyRename: true,
+        },
         "ui:order": [
           "provider",
           "api_key",
diff --git a/web/src/components/config-form/section-configs/logger.ts b/web/src/components/config-form/section-configs/logger.ts
index 5cd7f6490b..61c365e034 100644
--- a/web/src/components/config-form/section-configs/logger.ts
+++ b/web/src/components/config-form/section-configs/logger.ts
@@ -12,7 +12,13 @@ const logger: SectionConfigOverrides = {
       },
       logs: {
         additionalProperties: {
-          "ui:options": { enumI18nPrefix: "logger.logLevel" },
+          "ui:options": {
+            enumI18nPrefix: "logger.logLevel",
+            additionalPropertyKeyLabel:
+              "configForm.additionalProperties.loggerNameLabel",
+            additionalPropertyKeyPlaceholder:
+              "configForm.additionalProperties.loggerNamePlaceholder",
+          },
         },
       },
     },
diff --git a/web/src/components/config-form/theme/templates/WrapIfAdditionalTemplate.tsx b/web/src/components/config-form/theme/templates/WrapIfAdditionalTemplate.tsx
index 6e6a19bfdd..9a769369ce 100644
--- a/web/src/components/config-form/theme/templates/WrapIfAdditionalTemplate.tsx
+++ b/web/src/components/config-form/theme/templates/WrapIfAdditionalTemplate.tsx
@@ -6,12 +6,14 @@ import {
   StrictRJSFSchema,
   WrapIfAdditionalTemplateProps,
 } from "@rjsf/utils";
+import { useEffect, useMemo, useState, type FocusEvent } from "react";
 import { Input } from "@/components/ui/input";
 import { Button } from "@/components/ui/button";
 import { Label } from "@/components/ui/label";
 import { cn } from "@/lib/utils";
 import { useTranslation } from "react-i18next";
 import { LuTrash2 } from "react-icons/lu";
+import type { ConfigFormContext } from "@/types/configForm";
 
 export function WrapIfAdditionalTemplate<
   T = unknown,
@@ -30,6 +32,7 @@ export function WrapIfAdditionalTemplate<
     onKeyRenameBlur,
     readonly,
     required,
+    registry,
     schema,
     uiSchema,
   } = props;
@@ -38,6 +41,55 @@ export function WrapIfAdditionalTemplate<
 
   const additional = ADDITIONAL_PROPERTY_FLAG in schema;
 
+  const uiOptions = getUiOptions(uiSchema);
+  const keyIsReadonly = uiOptions.additionalPropertyKeyReadonly === true;
+
+  const keyLabelKey =
+    typeof uiOptions.additionalPropertyKeyLabel === "string"
+      ? uiOptions.additionalPropertyKeyLabel
+      : undefined;
+  const keyPlaceholderKey =
+    typeof uiOptions.additionalPropertyKeyPlaceholder === "string"
+      ? uiOptions.additionalPropertyKeyPlaceholder
+      : undefined;
+  const keyPattern =
+    typeof uiOptions.additionalPropertyKeyPattern === "string"
+      ? uiOptions.additionalPropertyKeyPattern
+      : undefined;
+  const preventKeyRename = uiOptions.preventKeyRename === true;
+
+  const formContext = registry?.formContext as ConfigFormContext | undefined;
+
+  // optionally, lock the key once it's been saved
+  const baseline = formContext?.baselineFormData;
+  const keyLocked =
+    preventKeyRename &&
+    typeof label === "string" &&
+    !!baseline &&
+    Object.prototype.hasOwnProperty.call(baseline, label);
+
+  // controlled key value so we can validate live and block invalid renames.
+  const [keyValue, setKeyValue] = useState<string>(label ?? "");
+  useEffect(() => {
+    setKeyValue(label ?? "");
+  }, [label]);
+
+  const keyRegex = useMemo(
+    () => (keyPattern ? new RegExp(keyPattern) : undefined),
+    [keyPattern],
+  );
+  const keyError = useMemo(() => {
+    if (!keyRegex || keyLocked) return null;
+    if (!keyRegex.test(keyValue)) {
+      return t("configForm.additionalProperties.keyPatternError", {
+        ns: "views/settings",
+        defaultValue:
+          "Use only letters, numbers, hyphens, and underscores (no spaces)",
+      });
+    }
+    return null;
+  }, [keyRegex, keyLocked, keyValue, t]);
+
   if (!additional) {
     return (
       <div className={classNames} style={style}>
@@ -47,20 +99,26 @@ export function WrapIfAdditionalTemplate<
   }
 
   const keyId = `${id}-key`;
-  const keyLabel = t("configForm.additionalProperties.keyLabel", {
-    ns: "views/settings",
-  });
+  const keyLabel = keyLabelKey
+    ? t(keyLabelKey, { ns: "views/settings" })
+    : t("configForm.additionalProperties.keyLabel", { ns: "views/settings" });
   const valueLabel = t("configForm.additionalProperties.valueLabel", {
     ns: "views/settings",
   });
-  const keyPlaceholder = t("configForm.additionalProperties.keyPlaceholder", {
-    ns: "views/settings",
-  });
+  const keyPlaceholder = keyPlaceholderKey
+    ? t(keyPlaceholderKey, { ns: "views/settings" })
+    : t("configForm.additionalProperties.keyPlaceholder", {
+        ns: "views/settings",
+      });
   const removeLabel = t("configForm.additionalProperties.remove", {
     ns: "views/settings",
   });
-  const uiOptions = getUiOptions(uiSchema);
-  const keyIsReadonly = uiOptions.additionalPropertyKeyReadonly === true;
+
+  const commitKeyRename = (e: FocusEvent<HTMLInputElement>) => {
+    if (readonly) return;
+    if (keyError) return;
+    onKeyRenameBlur?.(e);
+  };
 
   return (
     <div
@@ -70,23 +128,30 @@ export function WrapIfAdditionalTemplate<
       {!keyIsReadonly && (
         <div className="col-span-12 space-y-2 md:col-span-2">
           {displayLabel && <Label htmlFor={keyId}>{keyLabel}</Label>}
-          {keyIsReadonly ? (
+          {keyLocked ? (
             <div
               id={keyId}
-              className="flex items-center text-sm text-muted-foreground"
+              className="flex items-center break-all text-sm text-primary-variant"
             >
               {label}
             </div>
           ) : (
-            <Input
-              id={keyId}
-              name={keyId}
-              required={required}
-              defaultValue={label}
-              placeholder={keyPlaceholder}
-              disabled={disabled || readonly}
-              onBlur={!readonly ? onKeyRenameBlur : undefined}
-            />
+            <>
+              <Input
+                id={keyId}
+                name={keyId}
+                required={required}
+                value={keyValue}
+                placeholder={keyPlaceholder}
+                disabled={disabled || readonly}
+                onChange={(e) => setKeyValue(e.target.value)}
+                onBlur={!readonly ? commitKeyRename : undefined}
+                aria-invalid={keyError ? true : undefined}
+              />
+              {keyError && (
+                <p className="text-xs text-destructive">{keyError}</p>
+              )}
+            </>
           )}
         </div>
       )}