Developer API

Quick Start

All endpoints live under https://thetransferu.com/api/v1/. Pass your API key as a Bearer token.

curl https://thetransferu.com/api/v1/equivalency \
  -H "Authorization: Bearer tu_YOUR_KEY" \
  --data-urlencode "from_school=eastern-michigan-university" \
  --data-urlencode "to_school=ohio-state-university" \
  -G

Response is JSON with a data array and a meta pagination object.

Authentication

API keys use the tu_ prefix. Include the key in the Authorization header:

Authorization: Bearer tu_abc123...

Keys are hashed (SHA-256) before storage — we never retain the plaintext. If you lose your key, contact us for a replacement.

Rate Limits

Exceeded limits return 429 with a Retry-After header. Higher limits available on request.

Endpoints

{
  "schools": [
    {
      "slug": "ohio-state-university",
      "name": "Ohio State University",
      "state": "OH",
      "courseCount": 9124,
      "featured": true
    }
  ],
  "total": 544,
  "hasMore": true
}

{
  "data": [
    {
      "id": "clx...",
      "from_school": "eastern-michigan-university",
      "from_subject": "CS",
      "from_number": "101",
      "to_school": "ohio-state-university",
      "to_subject": "CSE",
      "to_number": "1222",
      "transfer_credits": 3,
      "source": "manual",
      "verified_at": "2026-01-15T00:00:00.000Z"
    }
  ],
  "meta": {
    "total": 47,
    "page": 1,
    "limit": 25,
    "pages": 2
  }
}

{
  "pairs": [...],
  "total": 12847,
  "hasMore": true,
  "offset": 0,
  "limit": 50
}

Error Codes

All error responses include an error field with a human-readable message.