> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.runpayments.io/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.runpayments.io/_mcp/server.

### Vaults & Customer Management

New comprehensive guide added covering:
- [Vaults Guide](/docs/guides/payments/vaults): Creating vaults, adding payment methods, zero-dollar authorization, and best practices
- Enhanced charge endpoint with `vault_holder_id` parameter for vault management

### Runner.js Enhancements

- **Release 1.4.3**: Enhanced vault creation, gateway response integration, and Payroc gateway support
- **Gateway Examples**: Added implementation guides for Payroc Gateway and ACH (iStream and Fiserv ACH)
- Updated parameters table with improved descriptions and standardized terminology

### ACH Payment Updates

Enhanced ACH payments guide with new required fields for Fiserv ACH compatibility:
- `payment_description`, `ach_discretionary_data`, `entry_class`, `credit_or_debit`
- Added minimum viable ACH transaction example

### API Requirements & Documentation

- **Expanded Required Fields**: Updated charge endpoint with 11 total required fields using "greatest common denominator" approach
- **Transaction Status Mapping**: Simplified ID mapping table to 9 core statuses
- **Boarding Webhooks**: Updated `event_table_pk` to `merchant_id` across all webhook examples
- Fixed documentation links and improved navigation structure