From 5106687a8c7a491cf3594370ebd91fba63da7634 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 7 May 2026 17:46:25 +0000
Subject: [PATCH 1/6] codegen metadata

---
 .stats.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.stats.yml b/.stats.yml
index 391cde3..57aa7a5 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 8
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-6f6bfb81d092f30a5e2005328c97d61b9ea36132bb19e9e79e55294b9534ce20.yml
-openapi_spec_hash: f3fc1e3688a38dc2c28f7178f7d534e5
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-e629569417ad17cad5c73180109b4c3ae778f38063fc72146fa82f82de145911.yml
+openapi_spec_hash: 42e4eedbc0fcc772bb271191a067bce1
 config_hash: 1fb12ae9b478488bc1e56bfbdc210b01

From 304ebd8ea3e7c9b6621d5382fc1f4c51ce64fb8d Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 7 May 2026 18:23:20 +0000
Subject: [PATCH 2/6] codegen metadata

---
 .stats.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.stats.yml b/.stats.yml
index 57aa7a5..094ac49 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 8
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-e629569417ad17cad5c73180109b4c3ae778f38063fc72146fa82f82de145911.yml
-openapi_spec_hash: 42e4eedbc0fcc772bb271191a067bce1
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-49b40c7425adba9e67fc102838c5216c45ca1f7ef4c10823c5665fd413538504.yml
+openapi_spec_hash: 6880dc029df2e88dfe8943c0dec5a3a5
 config_hash: 1fb12ae9b478488bc1e56bfbdc210b01

From 0acc093944e72ee488393ec1fb73dc16450cc825 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 7 May 2026 18:26:04 +0000
Subject: [PATCH 3/6] feat: [feat]: add `ignoreSelectors` to `observe()`

---
 .stats.yml                                      |  4 ++--
 lib/stagehand/models/session_observe_params.rb  | 10 +++++++++-
 rbi/stagehand/models/session_observe_params.rbi | 11 +++++++++++
 sig/stagehand/models/session_observe_params.rbs |  7 +++++++
 4 files changed, 29 insertions(+), 3 deletions(-)

diff --git a/.stats.yml b/.stats.yml
index 094ac49..0339c57 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 8
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-49b40c7425adba9e67fc102838c5216c45ca1f7ef4c10823c5665fd413538504.yml
-openapi_spec_hash: 6880dc029df2e88dfe8943c0dec5a3a5
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-eae8400fade7b2c8329c4148f56de92e147c34c0feecb420c015aab6544a9acc.yml
+openapi_spec_hash: 0a9eff1ac1d464e89cbd9db64709b08a
 config_hash: 1fb12ae9b478488bc1e56bfbdc210b01
diff --git a/lib/stagehand/models/session_observe_params.rb b/lib/stagehand/models/session_observe_params.rb
index b2c2f74..8564643 100644
--- a/lib/stagehand/models/session_observe_params.rb
+++ b/lib/stagehand/models/session_observe_params.rb
@@ -52,6 +52,12 @@ class SessionObserveParams < Stagehand::Internal::Type::BaseModel
       #   @param request_options [Stagehand::RequestOptions, Hash{Symbol=>Object}]
 
       class Options < Stagehand::Internal::Type::BaseModel
+        # @!attribute ignore_selectors
+        #   Selectors for elements and subtrees that should be excluded from observation
+        #
+        #   @return [Array<String>, nil]
+        optional :ignore_selectors, Stagehand::Internal::Type::ArrayOf[String], api_name: :ignoreSelectors
+
         # @!attribute model
         #   Model configuration object or model name string (e.g., 'openai/gpt-5-nano')
         #
@@ -79,10 +85,12 @@ class Options < Stagehand::Internal::Type::BaseModel
         optional :variables,
                  -> { Stagehand::Internal::Type::HashOf[union: Stagehand::SessionObserveParams::Options::Variable] }
 
-        # @!method initialize(model: nil, selector: nil, timeout: nil, variables: nil)
+        # @!method initialize(ignore_selectors: nil, model: nil, selector: nil, timeout: nil, variables: nil)
         #   Some parameter documentations has been truncated, see
         #   {Stagehand::Models::SessionObserveParams::Options} for more details.
         #
+        #   @param ignore_selectors [Array<String>] Selectors for elements and subtrees that should be excluded from observation
+        #
         #   @param model [Stagehand::Models::ModelConfig, String] Model configuration object or model name string (e.g., 'openai/gpt-5-nano')
         #
         #   @param selector [String] CSS selector to scope observation to a specific element
diff --git a/rbi/stagehand/models/session_observe_params.rbi b/rbi/stagehand/models/session_observe_params.rbi
index ba48ed4..240e691 100644
--- a/rbi/stagehand/models/session_observe_params.rbi
+++ b/rbi/stagehand/models/session_observe_params.rbi
@@ -100,6 +100,13 @@ module Stagehand
             )
           end
 
+        # Selectors for elements and subtrees that should be excluded from observation
+        sig { returns(T.nilable(T::Array[String])) }
+        attr_reader :ignore_selectors
+
+        sig { params(ignore_selectors: T::Array[String]).void }
+        attr_writer :ignore_selectors
+
         # Model configuration object or model name string (e.g., 'openai/gpt-5-nano')
         sig { returns(T.nilable(T.any(Stagehand::ModelConfig, String))) }
         attr_reader :model
@@ -161,6 +168,7 @@ module Stagehand
 
         sig do
           params(
+            ignore_selectors: T::Array[String],
             model: T.any(Stagehand::ModelConfig::OrHash, String),
             selector: String,
             timeout: Float,
@@ -177,6 +185,8 @@ module Stagehand
           ).returns(T.attached_class)
         end
         def self.new(
+          # Selectors for elements and subtrees that should be excluded from observation
+          ignore_selectors: nil,
           # Model configuration object or model name string (e.g., 'openai/gpt-5-nano')
           model: nil,
           # CSS selector to scope observation to a specific element
@@ -193,6 +203,7 @@ module Stagehand
         sig do
           override.returns(
             {
+              ignore_selectors: T::Array[String],
               model: T.any(Stagehand::ModelConfig, String),
               selector: String,
               timeout: Float,
diff --git a/sig/stagehand/models/session_observe_params.rbs b/sig/stagehand/models/session_observe_params.rbs
index 4aad068..063b837 100644
--- a/sig/stagehand/models/session_observe_params.rbs
+++ b/sig/stagehand/models/session_observe_params.rbs
@@ -54,6 +54,7 @@ module Stagehand
 
       type options =
         {
+          ignore_selectors: ::Array[String],
           model: Stagehand::Models::SessionObserveParams::Options::model,
           selector: String,
           timeout: Float,
@@ -61,6 +62,10 @@ module Stagehand
         }
 
       class Options < Stagehand::Internal::Type::BaseModel
+        attr_reader ignore_selectors: ::Array[String]?
+
+        def ignore_selectors=: (::Array[String]) -> ::Array[String]
+
         attr_reader model: Stagehand::Models::SessionObserveParams::Options::model?
 
         def model=: (
@@ -82,6 +87,7 @@ module Stagehand
         ) -> ::Hash[Symbol, Stagehand::Models::SessionObserveParams::Options::variable]
 
         def initialize: (
+          ?ignore_selectors: ::Array[String],
           ?model: Stagehand::Models::SessionObserveParams::Options::model,
           ?selector: String,
           ?timeout: Float,
@@ -89,6 +95,7 @@ module Stagehand
         ) -> void
 
         def to_hash: -> {
+          ignore_selectors: ::Array[String],
           model: Stagehand::Models::SessionObserveParams::Options::model,
           selector: String,
           timeout: Float,

From 9590ccac39407c027e9e2ea3649a719b00660170 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Wed, 13 May 2026 02:01:24 +0000
Subject: [PATCH 4/6] ci: pin GitHub Actions to commit SHAs

Pin all GitHub Actions referenced in generated workflows (both
first-party `actions/*` and third-party) to immutable commit SHAs.
Updating pinned actions is now a deliberate codegen-side bump rather
than implicit on every workflow run.
---
 .github/workflows/ci.yml             | 14 +++++++-------
 .github/workflows/publish-gem.yml    |  4 ++--
 .github/workflows/release-doctor.yml |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7356e9e..bd96cf7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,9 +26,9 @@ jobs:
       github.repository == 'stainless-sdks/stagehand-ruby' &&
       (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1.306.0
         with:
           bundler-cache: false
       - run: |-
@@ -39,7 +39,7 @@ jobs:
           github.repository == 'stainless-sdks/stagehand-ruby' &&
           !startsWith(github.ref, 'refs/heads/stl/')
         id: github-oidc
-        uses: actions/github-script@v8
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: core.setOutput('github_token', await core.getIDToken());
 
@@ -60,9 +60,9 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1.306.0
         with:
           bundler-cache: false
       - run: |-
@@ -76,9 +76,9 @@ jobs:
     runs-on: ${{ github.repository == 'stainless-sdks/stagehand-ruby' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1.306.0
         with:
           bundler-cache: false
       - run: |-
diff --git a/.github/workflows/publish-gem.yml b/.github/workflows/publish-gem.yml
index 160f82b..c47e5b8 100644
--- a/.github/workflows/publish-gem.yml
+++ b/.github/workflows/publish-gem.yml
@@ -14,9 +14,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@c4e5b1316158f92e3d49443a9d58b31d25ac0f8f # v1.306.0
         with:
           bundler-cache: false
       - run: |-
diff --git a/.github/workflows/release-doctor.yml b/.github/workflows/release-doctor.yml
index 801df3e..e75d806 100644
--- a/.github/workflows/release-doctor.yml
+++ b/.github/workflows/release-doctor.yml
@@ -12,7 +12,7 @@ jobs:
     if: github.repository == 'browserbase/stagehand-ruby' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || startsWith(github.head_ref, 'release-please') || github.head_ref == 'next')
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Check release environment
         run: |

From 6149c11d9ab60a0cac69f1e26e3a2f42425ad616 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 14 May 2026 02:01:27 +0000
Subject: [PATCH 5/6] fix(client): elide content type header on requests
 without body

---
 lib/stagehand/internal/transport/base_client.rb | 2 ++
 test/stagehand/client_test.rb                   | 9 +++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/lib/stagehand/internal/transport/base_client.rb b/lib/stagehand/internal/transport/base_client.rb
index 54200c4..9b452d3 100644
--- a/lib/stagehand/internal/transport/base_client.rb
+++ b/lib/stagehand/internal/transport/base_client.rb
@@ -306,6 +306,8 @@ def initialize(
               Stagehand::Internal::Util.deep_merge(*[req[:body], opts[:extra_body]].compact)
             end
 
+          headers.delete("content-type") if body.nil?
+
           url = Stagehand::Internal::Util.join_parsed_uri(
             @base_url_components,
             {**req, path: path, query: query}
diff --git a/test/stagehand/client_test.rb b/test/stagehand/client_test.rb
index 4b96ac0..dc061f1 100644
--- a/test/stagehand/client_test.rb
+++ b/test/stagehand/client_test.rb
@@ -356,8 +356,8 @@ def test_client_redirect_307
       assert_equal(recorded.method, _1.method)
       assert_equal(recorded.body, _1.body)
       assert_equal(
-        recorded.headers.transform_keys(&:downcase).fetch("content-type"),
-        _1.headers.transform_keys(&:downcase).fetch("content-type")
+        recorded.headers.transform_keys(&:downcase)["content-type"],
+        _1.headers.transform_keys(&:downcase)["content-type"]
       )
     end
   end
@@ -474,8 +474,9 @@ def test_default_headers
     stagehand.sessions.start(model_name: "openai/gpt-5.4-mini")
 
     assert_requested(:any, /./) do |req|
-      headers = req.headers.transform_keys(&:downcase).fetch_values("accept", "content-type")
-      headers.each { refute_empty(_1) }
+      headers = req.headers.transform_keys(&:downcase)
+      expected = req.body.nil? ? ["accept"] : %w[accept content-type]
+      headers.fetch_values(*expected).each { refute_empty(_1) }
     end
   end
 end

From 0c355846b0a09c484a5f3682f32234593236fc41 Mon Sep 17 00:00:00 2001
From: "stainless-app[bot]"
 <142633134+stainless-app[bot]@users.noreply.github.com>
Date: Thu, 14 May 2026 02:01:51 +0000
Subject: [PATCH 6/6] release: 3.21.0

---
 .release-please-manifest.json |  2 +-
 CHANGELOG.md                  | 13 +++++++++++++
 Gemfile.lock                  |  2 +-
 lib/stagehand/version.rb      |  2 +-
 4 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d11c8fc..eba8a04 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.20.0"
+  ".": "3.21.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fd0ed0..4e0bd39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## 3.21.0 (2026-05-14)
+
+Full Changelog: [v3.20.0...v3.21.0](https://github.com/browserbase/stagehand-ruby/compare/v3.20.0...v3.21.0)
+
+### Features
+
+* [feat]: add `ignoreSelectors` to `observe()` ([0acc093](https://github.com/browserbase/stagehand-ruby/commit/0acc093944e72ee488393ec1fb73dc16450cc825))
+
+
+### Bug Fixes
+
+* **client:** elide content type header on requests without body ([6149c11](https://github.com/browserbase/stagehand-ruby/commit/6149c11d9ab60a0cac69f1e26e3a2f42425ad616))
+
 ## 3.20.0 (2026-05-06)
 
 Full Changelog: [v3.19.3...v3.20.0](https://github.com/browserbase/stagehand-ruby/compare/v3.19.3...v3.20.0)
diff --git a/Gemfile.lock b/Gemfile.lock
index 4490644..adcbab3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    stagehand (3.20.0)
+    stagehand (3.21.0)
       cgi
       connection_pool
 
diff --git a/lib/stagehand/version.rb b/lib/stagehand/version.rb
index 2fbf718..bffebd2 100644
--- a/lib/stagehand/version.rb
+++ b/lib/stagehand/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Stagehand
-  VERSION = "3.20.0"
+  VERSION = "3.21.0"
 end