diff --git a/app/views/boards/_board.json.jbuilder b/app/views/boards/_board.json.jbuilder
index 0eeff1896..586835c38 100644
--- a/app/views/boards/_board.json.jbuilder
+++ b/app/views/boards/_board.json.jbuilder
@@ -6,5 +6,9 @@ json.cache! board do
 
   json.creator board.creator, partial: "users/user", as: :user
 
-  json.public_url published_board_url(board) if board.published?
+  if board.published?
+    json.public_description board.public_description.to_plain_text
+    json.public_description_html board.public_description.to_s
+    json.public_url published_board_url(board)
+  end
 end
diff --git a/app/views/boards/show.json.jbuilder b/app/views/boards/show.json.jbuilder
index a6916c467..08c345660 100644
--- a/app/views/boards/show.json.jbuilder
+++ b/app/views/boards/show.json.jbuilder
@@ -1 +1,2 @@
 json.partial! "boards/board", board: @board
+json.user_ids @board.users.ids unless @board.all_access?
diff --git a/docs/api/sections/boards.md b/docs/api/sections/boards.md
index bf77245ab..b3157cdcd 100644
--- a/docs/api/sections/boards.md
+++ b/docs/api/sections/boards.md
@@ -40,7 +40,7 @@ __Response:__
 {
   "id": "03f5v9zkft4hj9qq0lsn9ohcm",
   "name": "Fizzy",
-  "all_access": true,
+  "all_access": false,
   "created_at": "2025-12-05T19:36:35.534Z",
   "auto_postpone_period_in_days": 30,
   "url": "http://fizzy.localhost:3006/897362094/boards/03f5v9zkft4hj9qq0lsn9ohcm",
@@ -53,11 +53,17 @@ __Response:__
     "created_at": "2025-12-05T19:36:35.401Z",
     "url": "http://fizzy.localhost:3006/897362094/users/03f5v9zjw7pz8717a4no1h8a7"
   },
+  "public_description": "Follow along with public product updates.",
+  "public_description_html": "<div class=\"trix-content\"><p>Follow along with public product updates.</p></div>",
+  "user_ids": [
+    "03f5v9zjw7pz8717a4no1h8a7",
+    "03f5v9zppzlksuj4mxba2nbzn"
+  ],
   "public_url": "http://fizzy.localhost:3006/897362094/public/boards/aB3dEfGhIjKlMnOp"
 }
 ```
 
-The `public_url` field is only present when the board is published.
+The `public_description`, `public_description_html`, and `public_url` fields are only present when the board is published. The `user_ids` field is only present when `all_access` is `false`; use `GET /:account_slug/users` to resolve those IDs to user records if needed.
 
 ## `POST /:account_slug/boards`
 
diff --git a/test/controllers/boards_controller_test.rb b/test/controllers/boards_controller_test.rb
index 059c38026..e4d4d3103 100644
--- a/test/controllers/boards_controller_test.rb
+++ b/test/controllers/boards_controller_test.rb
@@ -217,6 +217,19 @@ class BoardsControllerTest < ActionDispatch::IntegrationTest
     assert_equal users(:kevin).boards.count, @response.parsed_body.count
   end
 
+  test "index as JSON includes public_description fields for published boards" do
+    board = boards(:writebook)
+    board.publish
+    board.update!(public_description: "<p>Public board description.</p>")
+
+    get boards_path, as: :json
+    assert_response :success
+
+    published_board = @response.parsed_body.find { |b| b["id"] == board.id }
+    assert_equal board.public_description.to_plain_text, published_board["public_description"]
+    assert_equal board.public_description.to_s, published_board["public_description_html"]
+  end
+
   test "index as JSON paginates and preserves recently-accessed order" do
     account = accounts("37s")
     kevin = users(:kevin)
@@ -261,6 +274,43 @@ class BoardsControllerTest < ActionDispatch::IntegrationTest
     assert_equal boards(:writebook).auto_postpone_period_in_days, @response.parsed_body["auto_postpone_period_in_days"]
   end
 
+  test "show as JSON includes public_description fields when published" do
+    board = boards(:writebook)
+    board.publish
+    board.update!(public_description: "<p>This is a <strong>public</strong> note.</p>")
+
+    get board_path(board), as: :json
+    assert_response :success
+    assert_equal board.public_description.to_plain_text, @response.parsed_body["public_description"]
+    assert_equal board.public_description.to_s, @response.parsed_body["public_description_html"]
+  end
+
+  test "show as JSON excludes public_description fields when not published" do
+    board = boards(:writebook)
+    board.update!(public_description: "<p>This is a <strong>public</strong> note.</p>")
+    assert_not board.published?
+
+    get board_path(board), as: :json
+    assert_response :success
+    assert_nil @response.parsed_body["public_description"]
+    assert_nil @response.parsed_body["public_description_html"]
+  end
+
+  test "show as JSON includes granted user_ids when board is not all access" do
+    board = boards(:private)
+    board.accesses.revise granted: users(:david, :jz), revoked: []
+
+    get board_path(board), as: :json
+    assert_response :success
+    assert_equal board.users.ids.sort, @response.parsed_body["user_ids"].sort
+  end
+
+  test "show as JSON excludes user_ids when board is all access" do
+    get board_path(boards(:writebook)), as: :json
+    assert_response :success
+    assert_nil @response.parsed_body["user_ids"]
+  end
+
   test "show as JSON includes public_url when published" do
     board = boards(:writebook)
     board.publish