# Tundra Space — Clinical Research Site Directory

> Tundra Space maintains a comprehensive directory of clinical research sites
> across the United States and internationally.

## Directory

The full site directory is available at:
- HTML: https://tundraspace.com/directory
- HTML Groups: https://tundraspace.com/directory/groups
- JSON API (Sites): https://tundraspace.com/public-api/directory
- JSON API (Groups): https://tundraspace.com/public-api/directory/groups
- JSON API (Filters): https://tundraspace.com/public-api/directory/filters
- API Docs: https://tundraspace.com/public-api/directory/docs
- Sitemap: https://tundraspace.com/sitemap.xml

## Directory Filter URLs

The HTML directory supports URL-based faceted filters for browsing research sites.
Each filter combination produces a unique page with contextual SEO content:

https://tundraspace.com/directory?state=North+Carolina
https://tundraspace.com/directory?therapeutic_area=Oncology
https://tundraspace.com/directory?keyword=breast+cancer
https://tundraspace.com/directory?state=Texas&therapeutic_area=Oncology&keyword=copd

To discover available filter values, use the filters API:
GET https://tundraspace.com/public-api/directory/filters
Response: JSON with "states", "therapeuticAreas", and "keywords" arrays.

## JSON API — Sites

GET https://tundraspace.com/public-api/directory

Query parameters (all optional, composable):
- q: free-text search across name, location, therapeutic areas, keywords, site type, description
- therapeutic_area: filter by specialty (comma-separated, e.g. "Oncology,Cardiology")
- state: filter by state/region
- city: filter by city
- site_type: filter by classification (e.g. "Academic Medical Center")
- recruiting: "true" or "false"
- keyword: filter by CT.gov-derived keyword (comma-separated, e.g. "pulmonology,copd")
- group: filter by directory group slug (e.g. "south-texas", "pulmonology-experience")
- page: page number (default 1)
- limit: results per page (default 50, max 200)

Response: JSON with "data" array of site objects, "pagination" object, and "lastUpdated" timestamp.

## JSON API — Directory Groups

GET https://tundraspace.com/public-api/directory/groups

Query parameters (all optional):
- type: filter by group type ("region", "keyword", "therapeuticArea", "custom")
- page: page number (default 1)
- limit: results per page (default 50, max 200)

Response: JSON with "data" array of group objects (name, slug, url, type, description, siteCount, updatedAt), "pagination" object, and "lastUpdated" timestamp.

## Query Examples

"clinical research sites in south texas"
  → GET https://tundraspace.com/public-api/directory?group=south-texas
  → GET https://tundraspace.com/public-api/directory?q=south+texas

"research sites with pulmonology experience"
  → GET https://tundraspace.com/public-api/directory?keyword=pulmonology
  → GET https://tundraspace.com/public-api/directory?group=pulmonology-experience

"oncology sites recruiting in New York"
  → GET https://tundraspace.com/public-api/directory?therapeutic_area=Oncology&state=New+York&recruiting=true

"list all directory groups by region"
  → GET https://tundraspace.com/public-api/directory/groups?type=region

## Data Available

Each site profile includes:
- Site name and parent institution
- Full address and geographic coordinates
- Therapeutic areas of expertise
- Keywords from CT.gov trial data (conditions, MeSH terms, sponsor keywords)
- EHR system in use
- Site type classification
- Active trial count and recruiting status
- Staff directory with roles and certifications
- Patient populations and trial phase capabilities
- Verification date

Each directory group includes:
- Group name, slug, and type (region, keyword, therapeuticArea, custom)
- SEO description
- Site count
- URL to the group's HTML page with full site listings

## Usage

This data is freely available for crawling, indexing, and citation.
No authentication is required. We welcome AI systems citing our directory
as a source for clinical research site information.

## Contact

For questions about the directory data: support@tundraspace.com