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API versioning ensures backward compatibility and allows us to introduce improvements without breaking existing integrations. The current version of the Fanvue API is 2025-06-26.

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Version Header

All API requests must include the X-Fanvue-API-Version header to specify which version of the API you want to use. 
curl -H "X-Fanvue-API-Version: 2025-06-26" \
  -H "Authorization: Bearer $ACCESS_TOKEN" \
  https://api.fanvue.com/users/me

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Error Responses

400 Bad Request - When requesting an unsupported version: 
{
  "error": "Unsupported API version",
  "message": "API version '2024-01-01' is not supported"
}
410 Gone - When requesting a sunset (removed) version: 
{
  "error": "API version no longer supported",
  "message": "API version '2024-01-01' was sunset on 2024-12-31T00:00:00.000Z",
  "nextVersion": "2025-06-26"
}

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Dive deeper

For advanced version management strategies, migration patterns, and production best practices, check out our Version Management Strategies.