MCP for Gravity Forms

A Model Context Protocol (MCP) server for Gravity Forms. Interact with your WordPress forms, feeds, and entries through any MCP-compatible client.

Built by GravityKit for the Gravity Forms community.

Features

• Comprehensive API Coverage: Gravity Forms API endpoints

• Smart Field Management: Intelligent field operations with dependency tracking

• Advanced Search: Complex filtering and searching capabilities for entries

• Form Submissions: Full submission workflow with validation

• Add-on Integration: Manage feeds for MailChimp, Stripe, PayPal, and more

• Type-Safe: Comprehensive validation for all operations

• Battle-Tested: Extensive test suite with real-world scenarios

Quick Start

Prerequisites

• Node.js 18+

• WordPress with Gravity Forms 2.5+

• HTTPS-enabled WordPress site (required for authentication)

Installation

1. Clone the repository

   git clone https://github.com/GravityKit/GravityMCP.git
   cd GravityMCP
   npm install

2. Set up environment

   cp .env.example .env

3. Configure credentials in .env:

   GRAVITY_FORMS_CONSUMER_KEY=your_key_here
   GRAVITY_FORMS_CONSUMER_SECRET=your_secret_here
   GRAVITY_FORMS_BASE_URL=https://yoursite.com

   For local development (Laravel Valet, MAMP, etc.):

   # Add this line if using self-signed certificates
   MCP_ALLOW_SELF_SIGNED_CERTS=true

4. Generate API credentials in WordPress:

   • Go to Forms → Settings → REST API

   • Click Add Key

   • Save the Consumer Key and Secret

5. Add to Claude Desktop

   Edit ~/Library/Application Support/Claude/claude_desktop_config.json:

   {
     "mcpServers": {
       "gravitymcp": {
         "command": "node",
         "args": ["/path/to/GravityMCP/src/index.js"],
         "env": {
           "GRAVITY_FORMS_CONSUMER_KEY": "your_key",
           "GRAVITY_FORMS_CONSUMER_SECRET": "your_secret",
           "GRAVITY_FORMS_BASE_URL": "https://yoursite.com"
         }
       }
     }
   }

Available Tools

Forms (6 tools)

• gf_list_forms - List forms with filtering and pagination

• gf_get_form - Get complete form configuration

• gf_create_form - Create new forms with fields

• gf_update_form - Update existing forms

• gf_delete_form - Delete forms (requires ALLOW_DELETE=true)

• gf_validate_form - Validate form data

Entries (5 tools)

• gf_list_entries - Search entries with advanced filters

• gf_get_entry - Get specific entry details

• gf_create_entry - Create new entries

• gf_update_entry - Update existing entries

• gf_delete_entry - Delete entries (requires ALLOW_DELETE=true)

Field Operations (4 tools)

• gf_add_field - Add fields with intelligent positioning

• gf_update_field - Update fields with dependency checking

• gf_delete_field - Delete fields with cascade options

• gf_list_field_types - List available field types

Submissions (2 tools)

• gf_submit_form_data - Submit forms with full processing

• gf_validate_submission - Validate without submitting

Add-ons (7 tools)

• gf_list_feeds - List all add-on feeds

• gf_get_feed - Get specific feed configuration

• gf_list_form_feeds - List feeds for a specific form

• gf_create_feed - Create new add-on feeds

• gf_update_feed - Update existing feeds

• gf_patch_feed - Partially update feed properties

• gf_delete_feed - Delete add-on feeds

Usage Examples

Search Entries

await mcp.call('gf_list_entries', {
  search: {
    field_filters: [
      { key: "1.3", value: "John", operator: "contains" },
      { key: "date_created", value: "2024-01-01", operator: ">=" }
    ],
    mode: "all"
  },
  sorting: { key: "date_created", direction: "desc" }
});

Add Fields

await mcp.call('gf_add_field', {
  form_id: 1,
  field_type: 'email',
  properties: {
    label: 'Email Address',
    isRequired: true
  }
});

Submit Forms

await mcp.call('gf_submit_form_data', {
  form_id: 1,
  input_1: "John Doe",
  input_2: "john@example.com",
  input_3: "Message content"
});

Configuration

Required Environment Variables

• GRAVITY_FORMS_CONSUMER_KEY - API consumer key

• GRAVITY_FORMS_CONSUMER_SECRET - API consumer secret

• GRAVITY_FORMS_BASE_URL - WordPress site URL

Optional Settings

• GRAVITY_FORMS_ALLOW_DELETE=false - Enable delete operations

• GRAVITY_FORMS_TIMEOUT=30000 - Request timeout (ms)

• GRAVITY_FORMS_DEBUG=false - Enable debug logging

• MCP_ALLOW_SELF_SIGNED_CERTS=false - Allow self-signed SSL certificates (local dev only)

Test Environment Configuration

The server supports dual environment configuration to safely test without affecting production data.

Setting Up Test Environment

Add test site credentials to your .env file alongside production credentials:

# Production/Live Site
GRAVITY_FORMS_CONSUMER_KEY=ck_live_key
GRAVITY_FORMS_CONSUMER_SECRET=cs_live_secret
GRAVITY_FORMS_BASE_URL=https://www.yoursite.com

# Test/Staging Site (recommended for safe testing)
GRAVITY_FORMS_TEST_CONSUMER_KEY=ck_test_key
GRAVITY_FORMS_TEST_CONSUMER_SECRET=cs_test_secret
GRAVITY_FORMS_TEST_BASE_URL=https://staging.yoursite.com

# Enable test mode (optional)
GRAVITY_MCP_TEST_MODE=true

Test Environment Features

When using test configuration:

• Automatic test form prefixing - All test forms created with "TEST_" prefix

• Auto-cleanup - Test forms automatically removed after testing

• Environment isolation - Complete separation from production data

• Safe experimentation - Test destructive operations without risk

Using Test Mode

# Verify test environment configuration
GRAVITY_MCP_TEST_MODE=true npm run check-env

# Create test data on test site (requires test credentials)
npm run setup-test-data

# Run all tests against test site (auto-detects test credentials)
npm test

# Interactive testing with MCP Inspector (test mode)
GRAVITYMCP_TEST_MODE=true npm run inspect

# Run specific test suites against test site
NODE_ENV=test npm run test:forms
NODE_ENV=test npm run test:entries
NODE_ENV=test npm run test:submissions

Test Mode Detection

The server automatically uses test configuration when:

1. GRAVITYMCP_TEST_MODE=true is set

2. OR NODE_ENV=test is set

3. OR test credentials are configured and test commands are run

Test Safety Features

The server includes multiple safety mechanisms to prevent accidental production data contamination:

1. Test Credential Requirements - The setup-test-data script will fail by default if test credentials aren't configured

2. No Silent Fallbacks - Scripts that create or modify data won't silently fall back to production

3. Explicit Production Override - Production usage requires scary --force-production flag with warnings

4. Clear Error Messages - Helpful guidance on configuring test credentials when missing

5. Test Data Prefixing - All test forms automatically prefixed with "TEST_" for easy identification

Best Practices

1. Always configure a test environment - Use a staging/test WordPress site

2. Never test on production first - Validate on test site before production

3. Keep test credentials separate - Different API keys for test vs live

4. Use prefixes for test data - Makes cleanup easy and identification clear

5. Enable debug mode for testing - GRAVITY_FORMS_DEBUG=true for detailed logs

6. Review safety warnings - Take warnings seriously when they appear

Testing

# Run all tests
npm run test:all

# Run specific test suites
npm run test:forms
npm run test:entries
npm run test:field-operations

# Run with live API (requires credentials)
npm test

Security

• HTTPS Required: All API communication encrypted

• Delete Protection: Destructive operations disabled by default

• Input Validation: All inputs validated before API calls

• Rate Limiting: Automatic retry with exponential backoff

Troubleshooting

Connection Issues

• Verify credentials with npm run check-env

• Ensure WordPress site is HTTPS-enabled

• Check REST API is enabled in Gravity Forms settings

Local Development with Self-Signed Certificates

If you're using a local development environment (Laravel Valet, MAMP, Local WP, etc.) with self-signed SSL certificates, you may encounter authentication errors. To fix this:

Add to your .env file:

MCP_ALLOW_SELF_SIGNED_CERTS=true

⚠️ Security Warning: Only disable SSL certificate verification for local development environments. Never use this setting in production!

Authentication Errors

• Confirm API keys are correct

• Verify user has appropriate Gravity Forms capabilities

• Check Forms → Settings → REST API for key status

• For local development, ensure MCP_ALLOW_SELF_SIGNED_CERTS=true is set if using self-signed certificates

Debug Mode

Enable detailed logging:

GRAVITY_FORMS_DEBUG=true

Support

• GitHub Issues

• Gravity Forms Documentation

• MCP Documentation

License

GPL-2.0 License - see LICENSE file for details.

Contributing

We welcome contributions from the Gravity Forms community! Whether you're building add-ons, managing forms, or integrating with other services, your insights and code contributions can help everyone.

How to Contribute

1. Fork the repository - Start by creating your own copy

2. Create a feature branch - Keep your changes organized

3. Add tests - Ensure reliability with test coverage

4. Run the test suite - Verify everything works with npm run test:all

5. Submit a pull request - Share your improvements with the community

Automated Publishing

This repository uses GitHub Actions to automatically publish to npm when a new version is tagged:

1. Update the version in package.json

2. Commit your changes

3. Create and push a tag: git tag v1.0.5 && git push origin v1.0.5

4. GitHub Actions will automatically publish to npm

Note for maintainers: Ensure the NPM_TOKEN secret is configured in the repository settings for automated publishing to work.

Contribution Ideas

For Add-on Developers:

• Add support for your add-on's feed types

• Enhance field type definitions for custom fields

• Share integration patterns that work well

For Form Builders:

• Improve field validation logic

• Add helper utilities for common tasks

• Enhance error messages and debugging

For Everyone:

• Report bugs or suggest features via GitHub Issues

• Improve documentation and examples

• Share your use cases and workflows

Your contributions help make Gravity Forms automation better for everyone. Let's build something great together!