The Only API docs
Cache & Sync

Backfill historical data (async)

Kick off a historical backfill for this account, walking further back than the routine refresh. Returns 202 — track progress via the refresh-status routes or GET…

POST
/accounts/{of_user_id}/backfill

Kick off a historical backfill for this account, walking further back than the routine refresh. Returns 202 — track progress via the refresh-status routes or GET /events/stream.

Guide: Cached reads

X-API-Key<token>

Your CRM panel API key

In: header

Path Parameters

of_user_id*string

Creator account ID of the connected account (OnlyFans or Fansly). Use GET /accounts to list connected accounts and their IDs.

Header Parameters

X-Proxy?string

Proxy URL — HTTP or SOCKS5 (e.g. http://user:pass@host:port or socks5://user:pass@host:port). Optional on post-connection routes, where it overrides the proxy saved at login time. Required on the connection routes (POST /accounts/login, POST /accounts/login/cookies, POST /accounts/login/verify-otp) for OnlyFans accounts; optional for Fansly.

Response Body

application/json

curl -X POST "https://example.com/accounts/string/backfill"
{  "already_running": true,  "days": 0,  "platform": "string",  "state": null,  "success": true}