COMPARISON
The Only API vs onlyfansapi.com — Flat Per-Account OnlyFans API Pricing vs Per-Call Credits
Two REST APIs aimed at the same problem — managing creator accounts programmatically. The differences are in pricing model, platform coverage, and how heavy workloads get billed: we charge a flat fee per connected account slot with unlimited calls and cover OnlyFans and Fansly behind one normalized API. Here is the honest OnlyFans API comparison.
TL;DR
Both products are real REST APIs. onlyfansapi.com has been around longer in some developer circles and covers OnlyFans; The Only API covers OnlyFans and Fansly behind one normalized API. We are meaningfully cheaper for any workload that polls or mass-messages, because we charge a flat $20/month per connected account slot ($15/month per slot at 15+) with unlimited calls on that slot, instead of per-call credits. There is a Free forever tier at $0 for 1 account with 1,000 API calls/month to evaluate on, and custom Enterprise pricing above 50 accounts. If your onlyfansapi.com bill is dominated by credit top-ups, switching usually pays for itself in a month.
Side-by-side comparison
Based on publicly available information as of July 20, 2026. We have linked to our own docs where verifiable; for onlyfansapi.com claims, refer to their current reference.
Last updated: July 20, 2026
| Feature | The Only API | onlyfansapi.com |
|---|---|---|
| Platform coverage | OnlyFans and Fansly, normalized to the same response shape — subscribers, transactions, and campaigns return identical schemas across both platforms, so your integration code does not branch per platform. | OnlyFans only. |
| Endpoint coverage | 200+ documented REST endpoints across OnlyFans and Fansly covering messaging, mass DMs, posts, vault, fans, subscribers, earnings, payouts, campaigns, and notifications. | Endpoint catalogue is published on their docs site. Coverage of less-common surfaces (vault, campaigns, notifications) varies — verify against their current reference. |
| API call limits / credits | Unlimited API calls on every paid slot. The Free forever tier includes 1,000 API calls/month across all 200+ endpoints — no credits and no per-call charges on any tier. A 600 requests/minute anti-flood cap applies on every tier. | Public pricing has historically used a credit / per-call model. Heavy polling and mass-messaging workloads consume credits quickly. |
| Response time | Cached endpoints (cached subscribers, transactions, and campaign data) serve without a platform round-trip, so they return in single-digit-to-low-double-digit milliseconds; live endpoints proxy directly to OnlyFans or Fansly without artificial throttling. | Performance varies by endpoint. We could not verify a public SLA as of July 2026. |
| Multi-account support | Per-account-slot pricing with isolated sessions, a dedicated proxy per account, and one API key spanning every connected OnlyFans and Fansly account. | Multiple accounts supported. Pricing structure for many accounts is best confirmed on their site. |
| Webhook delivery | HMAC-SHA256-signed webhooks with an exponential retry schedule (5s, 30s, 5m, 30m, 2h) and auto-deactivation after sustained failure. | Webhooks are offered. Retry schedule and signing scheme: refer to their current docs. |
| Hosted MCP server | Point Claude, Cursor, or any MCP client at our hosted MCP server, authenticate with your existing API key, and query your OnlyFans and Fansly data in natural language. Write access is off by default and gated per panel. | No hosted MCP server we could find as of July 2026. |
| Pricing model | Transparent flat fee per connected account slot: Free forever ($0 — 1 account, 1,000 API calls/mo), Slots ($20/mo per slot, dropping to $15/mo per slot at 15+ slots, unlimited calls), Enterprise (custom pricing, dedicated infrastructure, custom SLAs, white-glove onboarding for agencies managing 50+ accounts). | Credit-based / per-call tiers historically. Confirm current numbers on their public pricing page. |
| Free tier / trial | Free forever tier — 1 account, all 200+ endpoints, 1,000 API calls/month, no credit card required. Separately, the Slots plan offers a 14-day free trial with unlimited calls. | Free trial historically advertised; check their site for permanent free tier availability. |
| Documentation | Public OpenAPI spec at /api/openapi.json, interactive in-browser playground at /api-reference (no login required), with auto-generated client snippets for every major language and HTTP client. | Public reference docs hosted on their site. |
| Support | Community support on Free; priority email support on Slots; white-glove onboarding and custom SLAs on Enterprise. | Email / community support tiers per their plans. |
| Country of origin / team | Built and operated by Xcelerate Management Limited (New Zealand) — agency-operator founders. | Public team and HQ details: best confirmed on their own site. |
Where The Only API wins
No credits, no per-call charges
Credit systems penalize the workloads that matter most: polling for new fan signups, running mass DM campaigns, fanning out webhook events. We charge a flat fee per connected account slot, and calls on a paid slot are unlimited. Run as many as you want, including from staging environments. The Free forever tier is the only place with a call cap (1,000/month), and even there every one of the 200+ endpoints is reachable.
Cheaper at any non-trivial volume
$20/month per account slot, dropping to $15/month per slot once you reach 15+ slots, with unlimited calls on every paid slot. The break-even is simple arithmetic: if your monthly credit spend on a competing API exceeds $20 × your account count, you are overpaying. Above 50 accounts, Enterprise pricing goes lower still.
OnlyFans and Fansly, one normalized API
onlyfansapi.com is OnlyFans-only. We cover both platforms behind the same endpoints: POST /accounts/login accepts Fansly credentials alongside OnlyFans logins, and platform-neutral routes such as GET /subscribers/cached and GET /transactions/cached return identical response shapes for both. One integration, two platforms, no per-platform branching.
Hosted MCP server
Point Claude, Cursor, or any MCP client at our hosted MCP server, authenticate with your existing API key, and query your OnlyFans and Fansly data in natural language. Write access is off by default and gated per panel. No competitor in this comparison ships one.
Broader endpoint surface
200+ endpoints covering every OnlyFans and Fansly surface we have shipped against — including campaigns, vault, payouts, and notification streams that some competing APIs do not expose. See /onlyfans-automation for use-case examples.
Cached endpoints cost zero platform requests
Cached subscribers, transactions, and campaign data are served from our own store without a round-trip to OnlyFans or Fansly, so they return in single-digit-to-low-double-digit milliseconds and never consume a platform request. Live endpoints proxy directly without artificial throttling.
Webhooks built for production
HMAC-SHA256 signing, [5s, 30s, 5m, 30m, 2h] retry, auto-deactivate after sustained failure, per-CRM isolation. Fewer surprises on Sunday at 3 a.m.
Free tier with full endpoint access
Most APIs gate the interesting endpoints behind paid tiers. We do not. The Free forever tier gets all 200+ endpoints with one connected OnlyFans or Fansly account and 1,000 API calls/month, with no credit card, so you can verify the API works for your use case before paying anyone.
Where onlyfansapi.com might fit better
Honest call-outs — Google rewards comparison pages that admit when a competitor has merit:
You already have a stable integration
If your code is already running against onlyfansapi.com and your bill is small (a handful of accounts, low call volume), the migration effort might not pay back fast enough. Switching only makes sense when the savings or coverage justify it.
You prefer pay-as-you-go billing
Some teams genuinely prefer credit-based pricing because it maps to a usage spike. We do not offer that — we are flat per account. If predictable, low-volume, bursty usage is your pattern, credits can be a feature, not a bug.
Pricing comparison
The Only API is priced per connected account slot, and every tier includes all 200+ endpoints across OnlyFans and Fansly:
- Free forever — $0. 1 account, 1,000 API calls/month, no credit card required.
- Slots — $20/month per account slot. Every slot drops to $15/month once you reach 15+ slots. Unlimited API calls on every paid slot. Includes a 14-day free trial.
- Enterprise — custom pricing. Dedicated infrastructure, custom SLAs, and white-glove onboarding for large agencies managing 50+ accounts.
onlyfansapi.com: credit / per-call tiers as published on their site. For polling-heavy or mass-message workloads, our flat fee almost always wins — a job polling one account every minute is roughly 43,200 billable calls per account per month under a credit model and $0 extra under ours. For tiny, bursty integrations, run the math both ways.
See full pricing →onlyfansapi.com comparison — FAQ
The questions developers actually ask before switching APIs.
Try The Only API free
Free forever tier — 1 OnlyFans or Fansly account, all 200+ endpoints, 1,000 API calls/month, no credit card required. Separately, the Slots plan offers a 14-day free trial with unlimited calls. Run the same workload you run today and compare your own bill.
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