If an app that uses Ahrefs data stops syncing, first identify which connection it uses. A direct Ahrefs API v3 integration uses an API key. An Ahrefs Connect integration may use an OAuth connection managed by the third-party app. The correct fix depends on the error returned by that specific tool; “AI integration” is not one Ahrefs endpoint.
Before changing anything: Record the affected app, endpoint or report, time of failure, HTTP status, and whether the same account works in Ahrefs. Never paste a full API key into a support ticket, chat, or screenshot.
1. Check whether your plan and account have API access
Ahrefs says API v3 is available on eligible paid plans, while other plans have a limited set of free test queries. In your Ahrefs workspace, check the subscription and API limits. An app may fail because it requests a paid endpoint or has exhausted the available API units. Avoid repeatedly testing a paid endpoint: requests can consume units. See the Ahrefs API introduction for current eligibility, costs, and limits.
2. Verify the credential or OAuth connection
For a direct API-key integration, an Ahrefs workspace owner or admin can review keys under Account settings → API keys. Check whether the key expired, was revoked, belongs to a removed user, or has a usage limit. Generate a replacement only if needed, update the third-party app’s secret field, and revoke the old key after confirming the new connection works. Ahrefs documents key creation, expiry, and permissions in its API key guide.
For Ahrefs Connect, use the third-party app’s documented reconnect flow. Do not assume an API key can replace an OAuth token or that every third-party tool supports the same Ahrefs reports.
3. Read the status code and the actual response
- 401 or 403: Check the credential, account access, and endpoint permissions. Do not expose the full token in logs while diagnosing.
- 429: Ahrefs documents a default request limit and possible throttling. Pause retries, reduce request frequency, and follow the response or integration’s retry guidance.
- Other 4xx: Compare the URL, parameters, report name, and requested fields with the current API reference. An older integration may use a removed field or endpoint.
- 5xx or timeouts: Retry a small, safe test after a delay. If the issue persists, collect timestamps and a redacted response for the app provider and Ahrefs support.
4. Check for API changes and test a small request
Read the Ahrefs API changelog for changes to fields, endpoints, and request formats. If you control the integration, compare a documented example request with the app’s request. Ahrefs provides limited free test queries; use them where applicable to avoid unexpected API-unit charges. Test one report with only the fields you need, then restore the normal sync after it succeeds.
5. Escalate with useful diagnostics
If Ahrefs works directly but only one third-party app fails, contact that app’s support with its version, a redacted error, endpoint, and timestamp. If a documented API request fails in the same way, use the Ahrefs API Help Center or Ahrefs support. Do not include the full API key or customer data.
Sources and limits
This guide uses Ahrefs’ current API introduction, API-key documentation, changelog, and Help Center linked above. It does not claim to have tested your particular Ahrefs account or third-party app. The app’s own documentation is needed for its reconnect and sync controls.
