move hybrid mode behind experimental #1433
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🦋 Changeset detectedLatest commit: ae648ab The changes in this PR will be included in the next version bump. This PR includes changesets to release 3 packages
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Greptile SummaryThis PR gates hybrid mode behind the experimental flag to align it with other experimental features. The implementation adds validation that throws Changes made:
The implementation is consistent with how other experimental features (streaming, callbacks, MCP integrations) are validated in the codebase. Confidence Score: 5/5
Important Files Changed
Sequence DiagramsequenceDiagram
participant User
participant V3
participant validateExperimentalFeatures
participant V3AgentHandler
User->>V3: agent({ mode: 'hybrid' })
V3->>V3: Check if experimental flag set
alt experimental: false
V3->>validateExperimentalFeatures: Validate config
validateExperimentalFeatures->>validateExperimentalFeatures: Check mode === 'hybrid'
validateExperimentalFeatures-->>V3: Throw ExperimentalNotConfiguredError
V3-->>User: Error: hybrid mode requires experimental
else experimental: true
V3->>validateExperimentalFeatures: Validate config
validateExperimentalFeatures->>validateExperimentalFeatures: Check mode === 'hybrid'
validateExperimentalFeatures-->>V3: Pass validation
V3->>V3AgentHandler: Create with mode: 'hybrid'
V3AgentHandler->>V3AgentHandler: Initialize coordinate-based tools
V3-->>User: Return agent instance
end
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Additional Comments (1)
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packages/core/lib/v3/tests/agent-experimental-validation.spec.ts, line 198 (link)style: consider adding test case for hybrid mode requiring experimental flag
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2 files reviewed, 1 comment
pirate
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Dec 18, 2025
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🥲 approve but imo in the future we should consider just printing log lines for beta features warning that they're beta instead of gating behind feature flags.
This was referenced Dec 18, 2025
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Dec 27, 2025
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @browserbasehq/[email protected] ### Patch Changes - [#1461](#1461) [`0f3991e`](0f3991e) Thanks [@tkattkat](https://github.com/tkattkat)! - Move hybrid mode out of experimental - [#1433](#1433) [`e0e22e0`](e0e22e0) Thanks [@tkattkat](https://github.com/tkattkat)! - Put hybrid mode behind experimental - [#1456](#1456) [`f261051`](f261051) Thanks [@shrey150](https://github.com/shrey150)! - Invoke page.hover for agent move action - [#1473](#1473) [`e021674`](e021674) Thanks [@shrey150](https://github.com/shrey150)! - Add safety confirmation support for OpenAI + Google CUA - [#1399](#1399) [`6a5496f`](6a5496f) Thanks [@tkattkat](https://github.com/tkattkat)! - Ensure cua agent is killed when stagehand.close is called - [#1436](#1436) [`fea1700`](fea1700) Thanks [@miguelg719](https://github.com/miguelg719)! - Fix auto-load key for act/extract/observe parametrized models on api - [#1439](#1439) [`5b288d9`](5b288d9) Thanks [@tkattkat](https://github.com/tkattkat)! - Remove base64 from agent actions array ( still present in messages object ) - [#1408](#1408) [`e822f5a`](e822f5a) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - allow for act() cache hit when variable values change - [#1472](#1472) [`638efc7`](638efc7) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - fix: agent cache not refreshed on action failure - [#1424](#1424) [`a890f16`](a890f16) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - fix: "Error: -32000 Failed to convert response to JSON: CBOR: stack limit exceeded" - [#1418](#1418) [`934f492`](934f492) Thanks [@miguelg719](https://github.com/miguelg719)! - Cleanup handlers and bus listeners on close - [#1430](#1430) [`bd2db92`](bd2db92) Thanks [@shrey150](https://github.com/shrey150)! - Fix CUA model coordinate translation - [#1465](#1465) [`51e0170`](51e0170) Thanks [@miguelg719](https://github.com/miguelg719)! - Add media resolution high provider option to gemini 3 hybrid agent - [#1431](#1431) [`05f5580`](05f5580) Thanks [@tkattkat](https://github.com/tkattkat)! - Update the cache handling for agent - [#1432](#1432) [`f56a9c2`](f56a9c2) Thanks [@tkattkat](https://github.com/tkattkat)! - Deprecate cua: true in favor of mode: "cua" - [#1406](#1406) [`b40ae11`](b40ae11) Thanks [@tkattkat](https://github.com/tkattkat)! - Add support for hovering with coordinates ( page.hover ) - [#1407](#1407) [`0d2b398`](0d2b398) Thanks [@tkattkat](https://github.com/tkattkat)! - Clean up page methods - [#1412](#1412) [`cd01f29`](cd01f29) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - fix: load GOOGLE_API_KEY from .env - [#1462](#1462) [`a734fca`](a734fca) Thanks [@shrey150](https://github.com/shrey150)! - fix: correctly pass userDataDir to chrome launcher - [#1466](#1466) [`b342acf`](b342acf) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - move playwright to optional dependencies - [#1440](#1440) [`2987cd1`](2987cd1) Thanks [@tkattkat](https://github.com/tkattkat)! - [Feature] support excluding tools from agent - [#1455](#1455) [`dfab1d5`](dfab1d5) Thanks [@seanmcguire12](https://github.com/seanmcguire12)! - update aisdk client to better enforce structured output with deepseek models - [#1428](#1428) [`4d71162`](4d71162) Thanks [@tkattkat](https://github.com/tkattkat)! - Add "hybrid" mode to stagehand agent ## @browserbasehq/[email protected] ### Minor Changes - [#1459](#1459) [`abb3469`](abb3469) Thanks [@monadoid](https://github.com/monadoid)! - Added building of binaries - [#1457](#1457) [`5fc1281`](5fc1281) Thanks [@monadoid](https://github.com/monadoid)! - First changeset for stagehand-server - [#1469](#1469) [`d634d45`](d634d45) Thanks [@monadoid](https://github.com/monadoid)! - Bump to test binary builds ### Patch Changes - Updated dependencies \[[`0f3991e`](0f3991e), [`e0e22e0`](e0e22e0), [`f261051`](f261051), [`e021674`](e021674), [`6a5496f`](6a5496f), [`fea1700`](fea1700), [`5b288d9`](5b288d9), [`e822f5a`](e822f5a), [`638efc7`](638efc7), [`a890f16`](a890f16), [`934f492`](934f492), [`bd2db92`](bd2db92), [`51e0170`](51e0170), [`05f5580`](05f5580), [`f56a9c2`](f56a9c2), [`b40ae11`](b40ae11), [`0d2b398`](0d2b398), [`cd01f29`](cd01f29), [`a734fca`](a734fca), [`b342acf`](b342acf), [`2987cd1`](2987cd1), [`dfab1d5`](dfab1d5), [`4d71162`](4d71162)]: - @browserbasehq/[email protected] ## @browserbasehq/[email protected] ### Patch Changes - [#1373](#1373) [`cadd192`](cadd192) Thanks [@tkattkat](https://github.com/tkattkat)! - Update screenshot collector in agent evals cli - Updated dependencies \[[`0f3991e`](0f3991e), [`e0e22e0`](e0e22e0), [`f261051`](f261051), [`e021674`](e021674), [`6a5496f`](6a5496f), [`fea1700`](fea1700), [`5b288d9`](5b288d9), [`e822f5a`](e822f5a), [`638efc7`](638efc7), [`a890f16`](a890f16), [`934f492`](934f492), [`bd2db92`](bd2db92), [`51e0170`](51e0170), [`05f5580`](05f5580), [`f56a9c2`](f56a9c2), [`b40ae11`](b40ae11), [`0d2b398`](0d2b398), [`cd01f29`](cd01f29), [`a734fca`](a734fca), [`b342acf`](b342acf), [`2987cd1`](2987cd1), [`dfab1d5`](dfab1d5), [`4d71162`](4d71162)]: - @browserbasehq/[email protected] Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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why
put hybrid mode behind experimental flag
what changed
added experimental to jsdoc & experimental feature validation
test plan
Summary by cubic
Moved hybrid mode behind the experimental flag to prevent accidental use. Using mode: 'hybrid' now requires experimental: true; otherwise validation will fail.
Written for commit ae648ab. Summary will update automatically on new commits.