[fix] Anthropic CUA triple_click mapping (#2104)

[miguelg719]

Why

AnthropicCUAClient.convertToolUseToAction() handled actions like click, double_click, and left_click, but did not explicitly support triple_click.

Two issues:

1. The action type remained in snake_case (triple_click) instead of being normalized to tripleClick — the format expected by v3CuaAgentHandler.executeAction().
2. Coordinates provided via Anthropic’s coordinate: [x, y] format were not converted into the separate x / y fields required by the handler.

As a result, Anthropic triple-click actions were silently ignored by the handler switch.

What Changed

• AnthropicCUAClient.ts

• Added explicit handling for triple_click / tripleClick in convertToolUseToAction()

  • Mirrors the existing double_click implementation
  • Normalizes action type to tripleClick
  • Extracts coordinates from both:
    • coordinate: [x, y]
    • direct x / y fields

• v3CuaAgentHandler.ts

  • Added "triple_click" as a switch-case alias in executeAction()

Test Plan

Added anthropic-cua-triple-click.test.ts (Vitest) covering:

• triple_click with coordinate: [x, y]
• triple_click with direct x / y fields

All existing unit tests continue to pass.

---

Summary by cubic

Fixes Anthropic CUA triple_click so it runs as tripleClick with x/y parsed from coordinate: [x, y] or explicit fields. Also adds a CI job to run evals unit tests.

• Bug Fixes

  • Normalize triple_click/tripleClick to tripleClick in AnthropicCUAClient.convertToolUseToAction().
  • Parse x/y from coordinate: [x, y] or direct fields.
  • Add "triple_click" alias in v3CuaAgentHandler.executeAction().

• Dependencies

  • Changeset to publish a patch for @browserbasehq/stagehand.

^{Written for commit a230bfc. Summary will update on new commits.}

[changeset-bot]

🦋 Changeset detected

Latest commit: a230bfc

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@browserbasehq/stagehand	Patch
@browserbasehq/stagehand-evals	Patch
@browserbasehq/stagehand-server-v3	Patch
@browserbasehq/stagehand-server-v4	Patch

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[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 CUA as Anthropic CUA API
    participant Client as AnthropicCUAClient
    participant Handler as V3CuaAgentHandler
    participant Browser as Browser Action Executor

    Note over CUA,Browser: Triple Click Action Mapping Flow

    CUA->>Client: tool_use: action="triple_click", input={coordinate=[x,y]}
    Client->>Client: convertToolUseToAction()
    Note over Client: Check action type
    alt action == "triple_click" || action == "tripleClick"
        Client->>Client: Extract coordinates from coordinate[] or direct x/y
        Client->>Client: Build action: {type:"tripleClick", x, y}
    end
    Client-->>Handler: executeAction({type:"tripleClick", x, y})

    Handler->>Handler: executeAction(action)
    alt action.type == "tripleClick" || action.type == "triple_click"
        Handler->>Handler: Parse x, y from action
        Handler->>Browser: Click(x, y, count=3)
        Browser-->>Handler: {success: true}
        Handler-->>Client: {success: true}
    end

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[tkattkat]

nit: we dont need as number for input.x or input.y