feat(assisted-query): Pass metric context and use dedicated feature flag

Pass the exact metric name, type, and unit to the Seer agent via the
options dict so it can skip the metric.name discovery step. Gate the
metrics AI search bar behind gen-ai-explore-metrics-search instead of
the shared gen-ai-search-agent-translate flag.

- Add options prop to AskSeerPollingComboBox and useAskSeerPolling
- Wire traceMetric from Filter through to MetricsTabSeerComboBox
- Send metric_context in both polling and mutation API requests
- Switch feature flag checks to gen-ai-explore-metrics-search

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: isaacwang-sentry

static/app/components/searchQueryBuilder/askSeerCombobox/askSeerPollingComboBox.tsx

@@ -111,6 +111,11 @@ interface AskSeerPollingComboBoxProps<T extends QueryTokensProps> extends Omit<
    * If provided, the component will fall back to AskSeerComboBox on start failure.
    */
   fallbackMutationOptions?: UseMutationOptions<any, Error, string>;
+  /**
+   * Optional key-value options to pass to the search agent start endpoint.
+   * Used for strategy-specific context (e.g., metric name/type/unit for Metrics).
+   */
+  options?: Record<string, unknown>;
   /**
    * Transform the final response from the polling API to the expected format.
    * This allows customization of how the response is converted to query items.
@@ -126,6 +131,7 @@ export function AskSeerPollingComboBox<T extends QueryTokensProps>({
   strategy,
   transformResponse,
   fallbackMutationOptions,
+  options: extraOptions,
   ...props
 }: AskSeerPollingComboBoxProps<T>) {
   const buttonRef = useRef<HTMLButtonElement>(null);
@@ -167,6 +173,7 @@ export function AskSeerPollingComboBox<T extends QueryTokensProps>({
   } = useAskSeerPolling<T>({
     projectIds,
     strategy,
+    options: extraOptions,
     onError: error => {
       addErrorMessage(t('Failed to process AI query: %(error)s', {error: error.message}));
       trackAnalytics('ai_query.error', {

static/app/components/searchQueryBuilder/askSeerCombobox/useAskSeerPolling.tsx

@@ -60,6 +60,7 @@ interface UseAskSeerPollingOptions<T extends QueryTokensProps> {
   strategy: string;
   onError?: (error: Error) => void;
   onSuccess?: (result: T) => void;
+  options?: Record<string, unknown>;
 }
 
 /**
@@ -117,6 +118,7 @@ export function useAskSeerPolling<T extends QueryTokensProps>(
               natural_language_query: query,
               project_ids: options.projectIds,
               strategy: options.strategy,
+              ...(options.options ? {options: options.options} : {}),
             },
           }
         )) as AskSeerStartResponse;

static/app/views/explore/metrics/metricToolbar/filter.tsx

@@ -36,14 +36,18 @@ interface FilterProps {
 }
 
 interface MetricsSearchBarProps {
+  traceMetric: TraceMetric;
   tracesItemSearchQueryBuilderProps: TraceItemSearchQueryBuilderProps;
 }
 
-function MetricsSearchBar({tracesItemSearchQueryBuilderProps}: MetricsSearchBarProps) {
+function MetricsSearchBar({
+  tracesItemSearchQueryBuilderProps,
+  traceMetric,
+}: MetricsSearchBarProps) {
   const {displayAskSeer} = useSearchQueryBuilder();
 
   if (displayAskSeer) {
-    return <MetricsTabSeerComboBox />;
+    return <MetricsTabSeerComboBox traceMetric={traceMetric} />;
   }
 
   return <TraceItemSearchQueryBuilder {...tracesItemSearchQueryBuilderProps} />;
@@ -55,7 +59,7 @@ export function Filter({traceMetric}: FilterProps) {
   const organization = useOrganization();
 
   const hasTranslateEndpoint = organization.features.includes(
-    'gen-ai-search-agent-translate'
+    'gen-ai-explore-metrics-search'
   );
 
   const traceMetricFilter = createTraceMetricFilter(traceMetric);
@@ -172,6 +176,7 @@ export function Filter({traceMetric}: FilterProps) {
     >
       <MetricsSearchBar
         tracesItemSearchQueryBuilderProps={tracesItemSearchQueryBuilderProps}
+        traceMetric={traceMetric}
       />
     </SearchQueryBuilderProvider>
   );

static/app/views/explore/metrics/metricsTabSeerComboBox.tsx

@@ -16,6 +16,7 @@ import {useLocation} from 'sentry/utils/useLocation';
 import {useNavigate} from 'sentry/utils/useNavigate';
 import {useOrganization} from 'sentry/utils/useOrganization';
 import {useProjects} from 'sentry/utils/useProjects';
+import type {TraceMetric} from 'sentry/views/explore/metrics/metricQuery';
 import type {WritableAggregateField} from 'sentry/views/explore/queryParams/aggregateField';
 import {
   useQueryParams,
@@ -26,6 +27,10 @@ import {Mode} from 'sentry/views/explore/queryParams/mode';
 import {isVisualize} from 'sentry/views/explore/queryParams/visualize';
 import type {ChartType} from 'sentry/views/insights/common/components/chart';
 
+interface MetricsTabSeerComboBoxProps {
+  traceMetric: TraceMetric;
+}
+
 interface Visualization {
   chartType: ChartType;
   yAxes: string[];
@@ -59,7 +64,7 @@ interface MetricsAskSeerTranslateResponse {
   unsupported_reason: string | null;
 }
 
-export function MetricsTabSeerComboBox() {
+export function MetricsTabSeerComboBox({traceMetric}: MetricsTabSeerComboBoxProps) {
   const navigate = useNavigate();
   const location = useLocation();
   const {projects} = useProjects();
@@ -125,6 +130,13 @@ export function MetricsTabSeerComboBox() {
           project_ids: selectedProjects,
           strategy: 'Metrics',
           user_email: user?.email,
+          options: {
+            metric_context: {
+              metric_name: traceMetric.name,
+              metric_type: traceMetric.type,
+              metric_unit: traceMetric.unit ?? 'none',
+            },
+          },
         },
       });
 
@@ -281,7 +293,7 @@ export function MetricsTabSeerComboBox() {
   );
 
   const usePollingEndpoint = organization.features.includes(
-    'gen-ai-search-agent-translate'
+    'gen-ai-explore-metrics-search'
   );
 
   // Get selected project IDs for the polling variant
@@ -345,6 +357,13 @@ export function MetricsTabSeerComboBox() {
         initialQuery={initialSeerQuery}
         projectIds={selectedProjectIds}
         strategy="Metrics"
+        options={{
+          metric_context: {
+            metric_name: traceMetric.name,
+            metric_type: traceMetric.type,
+            metric_unit: traceMetric.unit ?? 'none',
+          },
+        }}
         applySeerSearchQuery={applySeerSearchQuery}
         transformResponse={transformResponse}
         analyticsSource="metrics"