diff --git a/build/transform_json_sections.ts b/build/transform_json_sections.ts
index daf7512007..65ea758bad 100644
--- a/build/transform_json_sections.ts
+++ b/build/transform_json_sections.ts
@@ -47,10 +47,16 @@ interface CodeExample {
 }
 
 interface PageJsonInput {
+  // Emitted by the Hugo templates and carried through untouched. Declared so the
+  // spread below preserves them explicitly rather than by accident: schema_version is
+  // what consumers gate re-parsing on, and since is the only version information the
+  // feed carries.
+  schema_version?: number;
   id: string;
   title: string;
   url: string;
   summary: string;
+  since?: string;
   content?: string;
   tags: string[];
   last_updated: string;
@@ -60,10 +66,12 @@ interface PageJsonInput {
 type PageType = 'content' | 'index';
 
 interface PageJsonOutput {
+  schema_version?: number;
   id: string;
   title: string;
   url: string;
   summary: string;
+  since?: string;
   page_type: PageType;
   content_hash?: string;
   tags: string[];
diff --git a/config.toml b/config.toml
index bd7c208cde..480907858b 100644
--- a/config.toml
+++ b/config.toml
@@ -62,6 +62,17 @@ anchor = "smart"
 tagManagerId = "GTM-TKZ6J9R"
 gitHubRepo = "https://github.com/redis/docs"
 
+# Schema version for the AI-facing JSON and Markdown outputs. Emitted as
+# `schema_version` in each per-page JSON record and in the Markdown metadata block.
+#
+# Increment this ONLY when the shape of a record changes: a field added, removed or
+# renamed, or a new value entering the `role` vocabulary. It must NOT change when page
+# content changes -- consumers gate re-parsing on it, and a version that moves with
+# content is a second content hash, which they will learn to ignore.
+#
+# Changing what a field *contains* is not a shape change and does not bump this.
+aiSchemaVersion = 1
+
 # Display and sort order for client examples
 clientsExamples = ["Python", "Node.js", "ioredis", "Java-Sync", "Lettuce-Sync", "Java-Async", "Java-Reactive", "Go", "C", "C#-Sync (NRedisStack)", "C#-Async (NRedisStack)", "C#-Sync (SE.Redis)", "C#-Async (SE.Redis)", "RedisVL", "PHP", "Ruby", "Rust-Sync", "Rust-Async"]
 searchService = "/convai/api/search-service"
diff --git a/content/ai-agent-resources.md b/content/ai-agent-resources.md
index 6ae34a4aee..b5c579f26f 100644
--- a/content/ai-agent-resources.md
+++ b/content/ai-agent-resources.md
@@ -65,16 +65,29 @@ Two consequences worth knowing if you diff the feed against the sitemap:
 - Both figures move. The feed is rebuilt at least daily and the corpus grows, so treat any
   page count as a snapshot.
 
+### Schema version
+
+Every record carries a `schema_version` integer, and the same value appears in the
+`json metadata` block of the Markdown output. It is currently **1**.
+
+It increments only when the **shape** of a record changes: a field added, removed or
+renamed, or a new value entering the [role vocabulary](#section-roles). It does **not**
+change when page content changes, and it does not change when the value inside a field
+changes without the field itself changing. Use `content_hash` to detect content changes;
+use `schema_version` to detect when your parser might need attention.
+
 ### JSON schema
 
 Each document contains:
 
 | Field | Type | Description |
 |-------|------|-------------|
+| `schema_version` | integer | Version of the record format. See [Schema version](#schema-version). |
 | `id` | string | Unique identifier, the page's path without a file extension (for example `develop/clients/redis-py`) |
 | `title` | string | Page title |
 | `url` | string | Canonical URL |
 | `summary` | string | Short description |
+| `since` | string | Redis version the command was introduced in. Present on command pages only. |
 | `page_type` | string | `"content"` (has prose) or `"index"` (navigation only) |
 | `content_hash` | string | SHA256 hash for cache invalidation (content pages only) |
 | `sections` | array | Content split by headings with semantic roles |
diff --git a/layouts/_default/section.json b/layouts/_default/section.json
index f88dafde72..95915770b7 100644
--- a/layouts/_default/section.json
+++ b/layouts/_default/section.json
@@ -22,10 +22,12 @@
 {{- end -}}
 
 {
+  "schema_version": {{ site.Params.aiSchemaVersion | jsonify }},
   "id": {{ $id | jsonify }},
   "title": {{ .Title | jsonify }},
   "url": {{ .Permalink | jsonify }},
-  "summary": {{ $summary | jsonify }},
+  "summary": {{ $summary | jsonify }},{{ with .Params.since }}
+  "since": {{ . | jsonify }},{{ end }}
   "content": {{ $content | jsonify }},
   "tags": {{ $tags | jsonify }},
   "last_updated": {{ $lastUpdated | jsonify }},
diff --git a/layouts/_default/section.md b/layouts/_default/section.md
index 800ebf5e4b..139c2741f6 100644
--- a/layouts/_default/section.md
+++ b/layouts/_default/section.md
@@ -2,6 +2,7 @@
 
 ```json metadata
 {
+  "schema_version": {{ site.Params.aiSchemaVersion | jsonify }},
   "title": {{ .Title | jsonify }},
   "description": {{ (.Params.description | default .Description) | plainify | replaceRE "\\s+" " " | strings.TrimSpace | jsonify }},
   "categories": {{ .Params.categories | jsonify }}{{ if .Params.arguments }},
diff --git a/layouts/_default/single.json b/layouts/_default/single.json
index a9325cbf43..30727f7fed 100644
--- a/layouts/_default/single.json
+++ b/layouts/_default/single.json
@@ -11,10 +11,12 @@
 {{- $lastUpdated := .Lastmod.Format "2006-01-02T15:04:05Z07:00" -}}
 
 {
+  "schema_version": {{ site.Params.aiSchemaVersion | jsonify }},
   "id": {{ $id | jsonify }},
   "title": {{ .Title | jsonify }},
   "url": {{ .Permalink | jsonify }},
-  "summary": {{ $summary | jsonify }},
+  "summary": {{ $summary | jsonify }},{{ with .Params.since }}
+  "since": {{ . | jsonify }},{{ end }}
   "content": {{ $content | jsonify }},
   "tags": {{ $tags | jsonify }},
   "last_updated": {{ $lastUpdated | jsonify }}
diff --git a/layouts/_default/single.md b/layouts/_default/single.md
index 800ebf5e4b..139c2741f6 100644
--- a/layouts/_default/single.md
+++ b/layouts/_default/single.md
@@ -2,6 +2,7 @@
 
 ```json metadata
 {
+  "schema_version": {{ site.Params.aiSchemaVersion | jsonify }},
   "title": {{ .Title | jsonify }},
   "description": {{ (.Params.description | default .Description) | plainify | replaceRE "\\s+" " " | strings.TrimSpace | jsonify }},
   "categories": {{ .Params.categories | jsonify }}{{ if .Params.arguments }},