Directory API

Public JSON API for querying the Tundra Space clinical research site directory. No authentication required.

Endpoints

Sites

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

Directory Groups

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

Public

Cache: 1 hour

CORS enabled

Related Resources

Directory (HTML)	https://tundraspace.com/directory
Directory Groups (HTML)	https://tundraspace.com/directory/groups
Sitemap	https://tundraspace.com/sitemap.xml
llms.txt	https://tundraspace.com/llms.txt

Sites Query Parameters

All parameters are optional and composable (ANDed together). When omitted, unfiltered results are returned.

Parameter	Type	Description
`q`	string	Free-text search across name, location, therapeutic areas, keywords, site type, and description.
`therapeutic_area`	string	Filter by therapeutic area. Comma-separated for multiple (e.g. "Oncology,Cardiology").
`state`	string	Filter by state or region (case-insensitive match).
`city`	string	Filter by city (case-insensitive match).
`site_type`	string	Filter by site type (e.g. "Academic Medical Center", "Community Hospital", "Dedicated Research Center").
`recruiting`	boolean	Filter by recruiting status. "true" for actively recruiting, "false" for not.
`keyword`	string	Filter by keyword from CT.gov trial data. Comma-separated for multiple (e.g. "pulmonology,copd"). All keywords must match.
`group`	string	Filter by directory group slug. Returns only sites in the specified group (e.g. "south-texas", "pulmonology-experience").
`page`	integer	Page number for pagination (default: 1).
`limit`	integer	Results per page (default: 50, max: 200).

Example Requests

All sites

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

Free-text search for "south texas"

GET https://tundraspace.com/public-api/directory?q=south+texas

Sites with pulmonology experience

GET https://tundraspace.com/public-api/directory?keyword=pulmonology

Sites in the "South Texas" group

GET https://tundraspace.com/public-api/directory?group=south-texas

Oncology sites in New York

GET https://tundraspace.com/public-api/directory?therapeutic_area=Oncology&state=New%20York

Recruiting sites in a specific city

GET https://tundraspace.com/public-api/directory?city=Pharr&recruiting=true

Multiple therapeutic areas, page 2

GET https://tundraspace.com/public-api/directory?therapeutic_area=Oncology,Cardiology&page=2&limit=25

Sites Response Format

Each item in the data array contains the following fields:

Field	Type	Description
`name`	string	Site name
`institution`	string \| null	Parent institution name
`slug`	string	URL-safe identifier
`url`	string	Full URL to the public profile page
`profileImageUrl`	string \| null	URL of the site profile image (can be displayed directly)
`address.street`	string \| null	Street address
`address.street2`	string \| null	Address line 2 (unit, suite, apt, etc.)
`address.city`	string \| null	City
`address.state`	string \| null	State or region
`address.postalCode`	string \| null	Postal code
`address.country`	string \| null	Country
`coordinates.latitude`	number \| null	Latitude
`coordinates.longitude`	number \| null	Longitude
`siteType`	string \| null	Site classification
`ehrSystem`	string \| null	Electronic health record system
`therapeuticAreas`	string[]	List of therapeutic specialties
`keywords`	string[]	Keywords derived from CT.gov trial data — conditions, MeSH terms, and sponsor keywords
`activeTrialCount`	number	Number of active clinical trials
`currentlyRecruiting`	boolean	Whether the site is actively recruiting
`activeTrials`	object[]	Active clinical trials — each entry has title, group, sponsorUrl, studyDetailsUrl, and description
`pastTrials`	object[]	Past clinical trials (completed/terminated) — same shape as activeTrials
`staff`	object[]	Staff directory — each entry has name, roles, certifications, description, and photoUrl (image URL)
`images`	object[]	Site image gallery — each entry has url (image URL), caption, and category
`patientPopulations`	string[]	Served patient populations (e.g. Adult, Pediatrics)
`trialPhases`	string[]	Trial phase capabilities (e.g. Phase I, Phase II)
`lastVerifiedAt`	string \| null	ISO 8601 timestamp of last verification
`updatedAt`	string	ISO 8601 timestamp of last update

Pagination

Both endpoints include a pagination object:

Field	Description
`page`	Current page number
`limit`	Results per page
`total`	Total number of matching items
`totalPages`	Total number of pages

Example Sites Response

{
  "data": [
    {
      "name": "Mt Sinai Clinical Research",
      "institution": "Mount Sinai Health System",
      "slug": "mt-sinai-clinical-research",
      "url": "https://tundraspace.com/directory/mt-sinai-clinical-research",
      "profileImageUrl": "https://cdn.tundraspace.com/site-abc123/images/profile.jpg",
      "address": {
        "street": "1468 Madison Ave",
        "street2": "Suite 200",
        "city": "New York",
        "state": "New York",
        "postalCode": "10029",
        "country": "United States"
      },
      "coordinates": { "latitude": 40.7903, "longitude": -73.9527 },
      "siteType": "Academic Medical Center",
      "ehrSystem": "Epic",
      "therapeuticAreas": ["Oncology", "Cardiology", "Neurology"],
      "keywords": ["lung neoplasms", "respiratory tract diseases", "copd"],
      "activeTrialCount": 12,
      "currentlyRecruiting": true,
      "activeTrials": [
        {
          "title": "Phase III Study of Drug X in Advanced NSCLC",
          "group": "Oncology",
          "sponsorUrl": null,
          "studyDetailsUrl": "https://clinicaltrials.gov/study/NCT12345678",
          "description": "A randomized, double-blind study evaluating Drug X..."
        }
      ],
      "pastTrials": [
        {
          "title": "Phase II Study of Drug Y in Breast Cancer",
          "group": "Oncology",
          "sponsorUrl": null,
          "studyDetailsUrl": "https://clinicaltrials.gov/study/NCT87654321",
          "description": "A completed study evaluating the efficacy of Drug Y..."
        }
      ],
      "staff": [
        {
          "name": "Dr. Jane Smith",
          "roles": ["Principal Investigator"],
          "certifications": ["MD", "PhD"],
          "description": "Director of Clinical Research",
          "photoUrl": "https://cdn.tundraspace.com/site-abc123/images/staff/jane-smith.jpg"
        }
      ],
      "images": [
        {
          "url": "https://cdn.tundraspace.com/site-abc123/images/gallery/facility.jpg",
          "caption": "Main research facility",
          "category": "site"
        }
      ],
      "patientPopulations": ["Adult", "Geriatrics"],
      "trialPhases": ["Phase II", "Phase III"],
      "lastVerifiedAt": "2026-03-01T00:00:00.000Z",
      "updatedAt": "2026-03-15T12:00:00.000Z"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 50,
    "total": 342,
    "totalPages": 7
  },
  "lastUpdated": "2026-03-18T00:00:00.000Z"
}

Directory Groups API

List curated groups of clinical research sites. Groups are organized by region, specialty, keyword, or custom curation.

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

Query Parameters

Parameter	Type	Description
`type`	string	Filter by group type (e.g. "region", "keyword", "therapeuticArea", "custom").
`page`	integer	Page number (default: 1).
`limit`	integer	Results per page (default: 50, max: 200).

Example Response

{
  "data": [
    {
      "name": "South Texas",
      "slug": "south-texas",
      "url": "https://tundraspace.com/directory/groups/south-texas",
      "type": "region",
      "description": "Clinical research sites in the South Texas region...",
      "siteCount": 12,
      "updatedAt": "2026-03-25T00:00:00.000Z"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 50,
    "total": 15,
    "totalPages": 1
  },
  "lastUpdated": "2026-03-25T00:00:00.000Z"
}

Usage Notes

This API is intended for AI systems, search engines, CROs, and sponsors looking to discover and evaluate clinical research sites. Data is freely available for crawling, indexing, and citation.

Responses are cached for 1 hour. The lastUpdated field indicates the most recent update in the result set.

For structured data markup, each individual site profile page at /directory/:slug includes Schema.org MedicalOrganization JSON-LD, and each group page at /directory/groups/:slug includes CollectionPage JSON-LD.

Use the group parameter to query pre-curated sets of sites (e.g. ?group=south-texas), or use q for natural language search (e.g. ?q=pulmonology+sites+in+texas).