docs: document new search engagement operators and index migration

enterprise-api/posts/search/integrate/operators.mdx

@@ -1,7 +1,7 @@
 ---
 title: Search Operators
 sidebarTitle: Operators
-description: Complete list of operators for Search queries
+description: Reference for Enterprise Search operators — keywords, users, URLs, hashtags, engagement thresholds, language, geo, and Post type filters with examples.
 keywords: ["search operators", "query operators", "search syntax", "search filters", "operators guide", "query syntax"]
 ---
 
@@ -128,6 +128,24 @@ Operators are used to match on specific Post attributes. There are two types:
 
 ---
 
+## Engagement Operators
+
+These precision operators filter Posts by minimum engagement counts. They are available on `/2/tweets/search/recent`, `/2/tweets/search/all`, `/2/tweets/counts/recent`, and `/2/tweets/counts/all` following the May 4, 2026 migration to the new X core platform search index.
+
+Use them to narrow results to Posts that crossed an engagement threshold. For example, surface higher-signal content during a real-time event or filter long-tail noise from a broad topic query.
+
+| Operator | Type | Summary | Example |
+|:---------|:-----|:--------|:--------|
+| `min_likes:` | Conjunction required | Matches Posts with at least the specified number of likes | `coffee min_likes:100` |
+| `min_replies:` | Conjunction required | Matches Posts with at least the specified number of replies | `from:XDevelopers min_replies:10` |
+| `min_reposts:` | Conjunction required | Matches Posts with at least the specified number of reposts | `#launch min_reposts:50` |
+
+<Note>
+  Engagement counts are evaluated at query time and may lag real-time activity by a short interval. These operators require at least one other standalone operator in the query (they are conjunction-required).
+</Note>
+
+---
+
 ## Logical Operators
 
 | Operator | Summary | Example |

x-api/posts/search/integrate/operators.mdx

@@ -1,7 +1,7 @@
 ---
 title: Search Operators
 sidebarTitle: Operators
-description: Complete list of operators for Search queries
+description: Reference for X API v2 Search operators — keywords, users, URLs, hashtags, engagement thresholds, language, geo, and Post type filters with examples.
 keywords: ["search operators", "query operators", "search syntax", "search filters", "operators guide", "query syntax"]
 ---
 
@@ -128,6 +128,24 @@ Operators are used to match on specific Post attributes. There are two types:
 
 ---
 
+## Engagement Operators
+
+These precision operators filter Posts by minimum engagement counts. They are available on `/2/tweets/search/recent`, `/2/tweets/search/all`, `/2/tweets/counts/recent`, and `/2/tweets/counts/all` following the May 4, 2026 migration to the new X core platform search index.
+
+Use them to narrow results to Posts that crossed an engagement threshold. For example, surface higher-signal content during a real-time event or filter long-tail noise from a broad topic query.
+
+| Operator | Type | Summary | Example |
+|:---------|:-----|:--------|:--------|
+| `min_likes:` | Conjunction required | Matches Posts with at least the specified number of likes | `coffee min_likes:100` |
+| `min_replies:` | Conjunction required | Matches Posts with at least the specified number of replies | `from:XDevelopers min_replies:10` |
+| `min_reposts:` | Conjunction required | Matches Posts with at least the specified number of reposts | `#launch min_reposts:50` |
+
+<Note>
+  Engagement counts are evaluated at query time and may lag real-time activity by a short interval. These operators require at least one other standalone operator in the query (they are conjunction-required).
+</Note>
+
+---
+
 ## Logical Operators
 
 | Operator | Summary | Example |

x-api/posts/search/introduction.mdx

@@ -1,7 +1,7 @@
 ---
 title: Search Posts
 sidebarTitle: Introduction
-description: Search the full X archive or recent Posts using advanced operators for keywords, hashtags, users, geo, language, engagement metrics, and more. Supports both 7-day recent search and full-archive historical search.
+description: Search recent Posts or the full X archive using query operators for keywords, hashtags, users, geo, language, and engagement thresholds.
 keywords: ["search tweets", "search posts", "recent search", "full archive search", "tweet search", "search API", "search queries", "search operators", "historical search"]
 ---
 
@@ -86,8 +86,20 @@ Build queries using operators that match on Post attributes:
     | `-is:reply` | `-is:reply` | Exclude replies |
     | `is:verified` | `is:verified` | Posts by verified users |
   </Accordion>
+
+  <Accordion title="Engagement operators">
+    | Operator | Example | Description |
+    |:---------|:--------|:------------|
+    | `min_likes:` | `coffee min_likes:100` | Posts with at least N likes |
+    | `min_replies:` | `from:XDevelopers min_replies:10` | Posts with at least N replies |
+    | `min_reposts:` | `#launch min_reposts:50` | Posts with at least N reposts |
+  </Accordion>
 </AccordionGroup>
 
+<Note>
+  As of May 4, 2026, the keyword-based search endpoints (`/2/tweets/search/recent`, `/2/tweets/search/all`, `/2/tweets/counts/recent`, `/2/tweets/counts/all`) run on the new X core platform search index. Retweets are no longer returned in keyword-based search results — use the `retweets_of:` operator, `GET /2/tweets/:id/retweets`, or the [Filtered Stream](/x-api/posts/filtered-stream/introduction) (unchanged) if you need retweet coverage.
+</Note>
+
 <Card title="Full operator reference" icon="list-check" href="/x-api/posts/search/integrate/operators">
   See all available operators and their access requirements
 </Card>