release: 3.20.0

[stainless-app]

Automated Release PR

3.20.0 (2026-05-06)

Full Changelog: v3.19.5...v3.20.0

Features

• [feat]: add ignoreSelectors to extract() (f11a102)
• [STG-1798] feat: support Browserbase verified sessions (078ab5c)
• [STG-1808] Deprecate Browserbase project ID (bfe505c)
• Bedrock auth passthrough (9463fa4)
• remove experimental requirement on agent variables (#2079) (92ed1e1)
• Revert "[STG-1573] Add providerOptions for extensible model auth (#1822)" (3c04086)
• support setting headers via env (b1c6127)

Bug Fixes

• client: preserve hardcoded query params when merging with user params (feac39d)
• ensure file data are only sent as 1 parameter (b870657)
• use correct field name format for multipart file arrays (852600a)

Performance Improvements

• client: optimize file structure copying in multipart requests (69d396f)

Chores

• internal: more robust bootstrap script (9bc61e1)
• internal: reformat pyproject.toml (03f4dbe)

---

This pull request is managed by Stainless's GitHub App.

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.

For a better experience, it is recommended to use either rebase-merge or squash-merge when merging this pull request.

🔗 Stainless website
📚 Read the docs
🙋 Reach out for help or questions

[stainless-app]

🧪 Testing

To try out this version of the SDK:

pip install 'https://pkg.stainless.com/s/stagehand-python/92ed1e1d43e89d92ffc4c3aa30c7f1a521f5d0e6/stagehand-3.19.5-py3-none-any.whl'

Expires at: Fri, 05 Jun 2026 20:11:59 GMT
Updated at: Wed, 06 May 2026 20:11:59 GMT

[cubic-dev-ai]

No issues found across 6 files

Confidence score: 5/5

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

Architecture diagram

sequenceDiagram
    participant User as User/Service
    participant Client as Stagehand Client
    participant Build as _build_request()
    participant HTTPX as httpx.Request

    Note over User,HTTPX: Request Preparation Flow

    User->>Client: call_api(url="/path?fixed=1", params={"user": "2"})
    Client->>Build: Initialize request construction
    
    Build->>Build: _prepare_url(options.url)
    
    alt NEW: Both URL query and params dictionary exist
        Note right of Build: Merging logic to prevent parameter loss
        Build->>Build: CHANGED: Extract params from URL string
        Build->>Build: CHANGED: Merge URL params with user params dict
        Build->>Build: CHANGED: Strip query from raw_path (prevent duplication)
    else Only URL query or only params dict
        Build->>Build: Use standard httpx parameter handling
    end

    Build->>HTTPX: Create Request object
    HTTPX-->>Build: request (with merged query string)
    Build-->>Client: Prepared request
    Client->>User: Execute and return response

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[monadoid]

Approving release PR after CI passed.

[stainless-app]

🤖 Release is at https://github.com/browserbase/stagehand-python/releases/tag/v3.20.0 🌻