App health check

GET

/health

const url = 'https://example.com/api/health';
const options = {method: 'GET'};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}

curl --request GET \
  --url https://example.com/api/health

Used by Fly.io load-balancer. Returns immediately with process liveness (version, uptime). No external calls — always 200.

Responses

200

Healthy

application/json

object

required

boolean

version

required

string

uptime_s

required

number

protocol_version

required

string