Messtone Devices Enables NREL User API Key as a Services Example: GET https://developer.nrel.gov/api/alt-fuel-stations/v1.json?limit=1&api_key=MESSTONE_KEY_HERE HTTP Header: curl -H ‘X-Api-Key: DEMO_KEY’ ‘https://developer.nrel.gov/api/alt-fuel-stations/v1.json?limit=1’ GET query string parameter: curl ‘https://developer.nrel.gov/api/alt-fuel-stations/v1.json?limit=1&api_key=MESSTONE_KEY_HERE’ HTTP basic authentication: curl ‘https://MESSTONE_KEY_HERE@developer.nrel.gov/api/alt-fuel-stations/v1.json?limit=1’ Request URL GET/api/alt-fuel-stations/v1/last-updated.format?parameters JSON Output Format GET/api/alt-fuel-stations/v1/last-updated.json?api_key=DEMO_KEY