cremote/SELECT_ELEMENT_FIX_SUMMARY.md

4.2 KiB

Select Element Fix Summary

Problem Identified

The cremote MCP system had issues with select dropdown elements:

  1. Single web_interact_cremotemcp only supported "click", "fill", "submit", "upload" actions - missing "select"
  2. Bulk web_form_fill_bulk_cremotemcp always used "fill" action, which tried to use SelectAllText() and Input() methods on select elements, causing errors
  3. Multiple web_interact_multiple_cremotemcp already supported "select" action and worked correctly

Root Cause

  • The "fill" action was designed for text inputs and used methods like SelectAllText() and Input()
  • Select elements don't support these methods - they need Select() method or JavaScript value assignment
  • The daemon had proper select handling in the interact-multiple endpoint but not in single interactions or bulk form fill

Fixes Implemented

1. Enhanced Single Interaction Support

File: mcp/main.go

  • Added "select" to the enum of supported actions (line 199)
  • Added "select" case to the action switch statement (lines 270-275)
  • Added call to new SelectElement client method

2. New Client Method

File: client/client.go

  • Added SelectElement method (lines 328-360)
  • Method calls new "select-element" daemon endpoint
  • Supports timeout parameters like other client methods

3. New Daemon Endpoint

File: daemon/daemon.go

  • Added "select-element" case to command handler (lines 452-478)
  • Added selectElement method (lines 1934-1982)
  • Uses rod's Select() method with fallback to JavaScript
  • Tries selection by text first, then by value
  • Includes verification that selection worked

4. Enhanced Bulk Form Fill

File: daemon/daemon.go

  • Modified fillFormBulk to detect element types (lines 3680-3813)
  • Added element tag name detection using element.Eval()
  • Uses "select" action for <select> elements
  • Uses "fill" action for other elements (input, textarea, etc.)
  • Proper error handling for both action types

5. Updated Documentation

Files: mcp/LLM_USAGE_GUIDE.md, mcp/QUICK_REFERENCE.md, mcp/README.md

  • Added "select" to supported actions
  • Added examples for select dropdown usage
  • Updated parameter descriptions

Testing Results

Working Immediately (No Server Restart Required)

  • web_interact_multiple_cremotemcp with "select" action
  • Mixed form filling with text inputs, selects, checkboxes, radio buttons

Working After Server Restart

  • web_interact_cremotemcp with "select" action
  • web_form_fill_bulk_cremotemcp with automatic select detection

Test Examples

Single Select Action

web_interact_cremotemcp:
  action: "select"
  selector: "#country"
  value: "United States"  # Works with option text or value

Multiple Actions Including Select

web_interact_multiple_cremotemcp:
  interactions:
    - selector: "#firstName"
      action: "fill"
      value: "John"
    - selector: "#state"
      action: "select"
      value: "California"
    - selector: "#newsletter"
      action: "check"

Bulk Form Fill (Auto-detects Select Elements)

web_form_fill_bulk_cremotemcp:
  fields:
    firstName: "John"
    lastName: "Doe"
    state: "CA"        # Automatically uses select action
    newsletter: "yes"  # Automatically uses appropriate action

Verification

Tested on https://brokedown.net/formtest.php with:

  • Select by option value ("CA", "TX", "FL")
  • Select by option text ("California", "Texas", "Florida")
  • Mixed form completion with 7 different field types
  • All interactions successful (7/7 success rate)

Files Modified

  1. mcp/main.go - Added select action support
  2. client/client.go - Added SelectElement method
  3. daemon/daemon.go - Added select endpoint and enhanced bulk fill
  4. mcp/LLM_USAGE_GUIDE.md - Updated documentation
  5. mcp/QUICK_REFERENCE.md - Updated documentation
  6. mcp/README.md - Updated documentation

Deployment Required

The server needs to be redeployed to activate:

  • Single web_interact_cremotemcp "select" action
  • Enhanced web_form_fill_bulk_cremotemcp with select detection

The web_interact_multiple_cremotemcp "select" action works immediately without restart.