Spine Directory Service - LDAP API
Access details of organisations, people and systems registered in the Spine Directory Service (SDS) using our LDAP API.
This API is under review for deprecation
It is not open to new integrations - if you're developing a new integration, use an alternative API.
Overview
Use this API to access details from the Spine Directory Service (SDS) relating to:
- organisations - NHS organisations, their sites and departments
- people - healthcare workers who are Spine users, including their organisation and role
- systems registered with Spine
Who can use this API
This API can only be used where there is a legal basis to do so. Make sure you have a valid use case before you go too far with your development.
You must do this before you can go live (see ‘Onboarding’ below).
API status
This API is in production but under review for deprecation.
It is not open to new integrations - if you're developing a new integration, use an alternative API.
Service level
This API is a platinum service, meaning it is operational and supported 24 hours a day, 365 days a year.
For more details, see service levels.
Technology
This API uses Lightweight Directory Access Protocol (LDAP).
Network access
You can access this API via the Health and Social Care Network (HSCN).
It is not available on the internet - but we do have alternative APIs that are available on the internet.
For more details, see Network access for APIs.
Testing
You can test this API using our Path to Live environments.
Onboarding
This API is not open to new integrations - if you're developing a new integration, use an alternative API.
Interactions
For a summary of how to interact with this API, see Spine Directory Service (SDS) guidance for developers.
For a full formal specification, see part 5 of the Spine External Interface Specification.
Additional guidance
For further technical resources, see Spine Directory Service (SDS) guidance for developers.
Last edited: 1 April 2026 2:45 pm