> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developer.nibtravelinsurance.com/guides/quote-and-booking-flows/external-membership-numbers/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developer.nibtravelinsurance.com/_mcp/server.

# External Membership numbers

nib travel insurance system supports storing external membership numbers associated to the policy information.

There is optional membership API validation based on integration with specific membership number types. These are validated against other details entered as part of the quote and booking flow, such as first name, last name and date of birth. (For example)

## API format specification

The following parameter can be used as part of a quote request to pass in external membership numbers:

```javascript
externalIdentifiers : {
"externalMembershipNumber" : 12345678
}
```