release: 3.19.2

[stainless-app]

Automated Release PR

3.19.2 (2026-04-01)

Full Changelog: v3.19.1...v3.19.2

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The semver version number is based on included commit messages. Alternatively, you can manually set the version number in the title of this pull request.

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Summary by cubic

Prepare the 3.19.2 release of stagehand. Updates version strings and refreshes the changelog.

• Bumps version in pyproject.toml, src/stagehand/_version.py, and .release-please-manifest.json.
• Adds 3.19.2 entry and compare link to CHANGELOG.md.

^{Written for commit 268d72a. Summary will update on new commits. Review in cubic}

[stainless-app]

🧪 Testing

To try out this version of the SDK:

pip install 'https://pkg.stainless.com/s/stagehand-python/99b603333c2b8e4ad0fb7782bf642c98430d420d/stagehand-3.19.1-py3-none-any.whl'

Expires at: Fri, 01 May 2026 19:17:55 GMT
Updated at: Wed, 01 Apr 2026 19:17:55 GMT

[cubic-dev-ai]

No issues found across 4 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

Architecture diagram

sequenceDiagram
    participant App as User Application
    participant SDK as Stagehand SDK
    participant Metadata as _version.py
    participant API as Stagehand API

    Note over App, API: Runtime Request Flow with Version Metadata

    App->>SDK: Initialize Client
    SDK->>Metadata: Read __version__ (3.19.2)
    Metadata-->>SDK: Return version string

    App->>SDK: Call API method (e.g., stagehand.act())
    
    Note right of SDK: SDK injects version into headers<br/>User-Agent: stagehand-python/3.19.2
    
    SDK->>API: HTTPS Request (Auth + Version Headers)
    
    alt Successful Request
        API-->>SDK: 200 OK (JSON Data)
        SDK-->>App: Return Parsed Response
    else Authentication/Validation Error
        API-->>SDK: 4xx Error Response
        SDK-->>App: Raise SDK Error
    end

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