> For the complete documentation index, see [llms.txt](https://synap.ac/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://synap.ac/docs/api/reference/preflight/ping-the-api.md).

# Ping the API

Answers as cheaply as an authenticated request can, so the preflight network check can time the real API path. Nothing is read or written.

```json
{"openapi":"3.0.1","info":{"title":"Synap API","version":"3.0.0"},"tags":[{"name":"Preflight","description":"Endpoints related to the checks a candidate runs before an exam."}],"servers":[{"url":"https://api.synap.ac/v3","description":"Production"},{"url":"https://api-stage.synap.ac/v3","description":"Staging"}],"security":[{"SessionAuth":[]},{"PATAuth":[]},{"AutomationAuth":[]},{"LegacySessionAuth":[]}],"components":{"securitySchemes":{"SessionAuth":{"type":"http","scheme":"bearer","description":"Authorize the request using a Session Token.","bearerFormat":"r:<token>"},"PATAuth":{"type":"http","scheme":"bearer","description":"Authorise the request using a personal access token.","bearerFormat":"p:"},"AutomationAuth":{"type":"http","scheme":"bearer","description":"Authorise the request with a short-lived token signed by the automations engine on behalf of a workflow owner.","bearerFormat":"a:<token>"},"LegacySessionAuth":{"type":"apiKey","description":"[Legacy] Authorize the request using a Session Token.","in":"header","name":"X-Syn-Session-Token"}},"schemas":{"UnauthorizedApiError":{"type":"object","description":"Unauthorized request.","properties":{"id":{"type":"string","description":"Unique ID of this error occurrence."},"status":{"type":"string","description":"HTTP status code."},"code":{"type":"string","description":"Synap internal error code."},"title":{"type":"string"},"detail":{"type":"string"},"source":{"type":"object","properties":{"pointer":{"type":"string"},"parameter":{"type":"string"}}}}}}},"paths":{"/network-ping":{"get":{"summary":"Ping the API","description":"Answers as cheaply as an authenticated request can, so the preflight network check can time the real API path. Nothing is read or written.","tags":["Preflight"],"responses":{"204":{"description":"No Content"},"401":{"description":"Unauthorized","content":{"application/vnd.api+json":{"schema":{"type":"object","properties":{"errors":{"type":"array","items":{"$ref":"#/components/schemas/UnauthorizedApiError"}}}}}}}},"operationId":"networkPing.pingNetwork"}}}}
```


---

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