Vault
Lookup Vault Media by Hash
Checks whether the creator already has a vault media item matching the given MD5 hash + size. Returns the existing vault media object when there is a match, 404 otherwise. Call this before requesting signed upload URLs to skip re-uploading a duplicate file. Requires permission api_media_hash_lookup.
https://public-api.buffmetrics.comGET/v1/{account_id}/vault/media/hash
Bearer
Authorization
defaultAuthorizationBearer <token>Send your FansMetric API key as a Bearer token in the Authorization header.
In: header
Path Parameters
account_id*integerOnlyFans numeric account ID.
Query Parameters
h*stringLower-case MD5 hex of the file. For multipart files, use
MD5(concatenation of part MD5 binaries) + "-" + partCount— the S3 multipart ETag format.size*stringFile size in bytes.
curl --request GET "https://public-api.buffmetrics.com/v1/acct_XXXXX/vault/media/hash?h=sample_h&size=sample_size" \
--header "Authorization: Bearer YOUR_API_KEY"Response
200{
"data":{
"id":1234567890
"type":"photo"
"createdAt":"2026-04-12T08:00:00+00:00"
"isReady":true
"files":{
"full":{
"url":"https://cdn2.onlyfans.com/..."
"width":1080
"height":1920
"size":234567
}
"thumb":{
"url":"..."
"width":300
"height":533
}
}
"duration":0
}
"_meta":{
"_credits":{
"used":1
}
"_rate_limits":{
"limit_minute":1000
"remaining_minute":999
"limit_day":50000
"remaining_day":49999
}
}
}