generated: '2026-07-22'
method: searched
source: https://www.tiingo.com/documentation/general/connecting
kind: connectivity-test
notes: Tiingo has no separate sandbox environment, test keys, or fixture data - the free plan runs against live
  data. What it does publish are connectivity/auth test surfaces, captured here; no test values are invented.
surfaces:
- name: REST connectivity test
  url: https://api.tiingo.com/api/test/
  auth: API token (query or header)
  response: '{''message'': ''You successfully sent a request''}'
  purpose: Verify credentials and connectivity before calling data endpoints.
- name: WebSocket test channel
  url: wss://api.tiingo.com/test
  auth: authorization field in subscribe payload
  purpose: Verify WebSocket connectivity, subscribe protocol, and heartbeats without consuming a data feed.
free_tier:
  notes: All accounts are free by default with generous usage limits, so live experimentation is the intended onboarding
    path (docs 1.1.2).