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Backlink data as JSON: $100 free credit, no card, Google sign-in.

SEOMasters.dev
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Check backlink free first, then spend the $100 on purpose

Four actions cost nothing. The starter balance is 1,000,000 credits. These budgets show how far that goes for typical developer projects.

The price list in one place

Prepaid, no subscription, no monthly minimum. One credit is $0.0001.

Free

0 credits

  • domain
  • overview
  • stats
  • suggest
Get $100 free

Light

1 credit

  • bulk_dr up to 2,000 domains
  • compare up to 20
  • top, dr_distribution, tld_breakdown
Choose

Link rows

2 credits

  • refdomains, backlinks, anchors
  • toppages, anchor_cloud
  • intersect for 2 to 10 domains
Choose

Search

3 credits

  • search over anchors, titles, URLs
  • keyword for an exact anchor
Choose

Three budgets, all hypothetical

These are planning examples, not reports from real accounts. Change the volumes and the arithmetic still holds, so substitute your own.

Budget A, a public widget. A free DR checker on your blog uses domain, which costs 0 credits. Ten thousand lookups a month are free at the API, and the only bill you face is hosting, which has nothing to do with us.

Budget B, an agency report. Monthly, 300 client domains, one refdomains call each at 2 credits. That is 600 credits a month and 7,200 a year, or $0.72. Small. The $100 balance would cover roughly 139 years at that rate, so storage and your own time dominate, not the API.

Budget C, a full export. One domain, 50 calls of 1,000 rows to reach the 50,000 cap, at 2 credits each: 100 credits, or one cent. Repeat for 1,000 domains and you spend 100,000 credits, which is $10 of the $100 and a tenth of the balance.

Notice what is missing: a monthly plan. There is no subscription to renew, and you pay for calls, not seats. Cheap. Every budget leans on the same fact. The bulk script and the paging notes show the code behind those call counts.

Same money, another vendor

Ahrefs prices per unit inside a subscription; this API prices per call.
SEOMasters.dev APIAhrefs API (as quoted)
Entry point$0, then prepaid creditFrom $129 a month
Allowance1,000,000 credits free at sign-up200,000 units a month
Minimum per requestNone; free actions cost 0At least 50 units
Most requests per month at that minimumNot applicable4,000
Keywords, rank tracking, daily crawlNot offeredYes, and Semrush offers them too

Where we would put it

Spend on monthly deep pulls, keep the rest free

Because the index refreshes about once a month, anything more frequent than monthly repeats yesterday's answer. Schedule paid pulls monthly and let the four no-key actions carry day-to-day lookups.

  • Cache free calls for a day
  • Allow-list paid actions in code
  • Log _credits after every call
  • Top up in USDT (TRC-20) only when the balance warrants it

Money questions

Does the $100 expire?
The material we hold for this site does not give an expiry, so we do not state one. Check the account page, which shows your balance and activity, before you plan a long-running job.
Is a card needed to start?
No. Sign in with a Google account and the $100 credit is added without a card. Later top-ups are made in USDT on the TRC-20 network from the account page.