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API Credits

Prepaid Claude API keys — the official API

Prepaid keys on Anthropic's own API — nothing to log into, nothing to redeem. Keys are issued on real Claude API accounts and point at the provider’s own endpoint, so your existing SDK runs unchanged — nothing is relayed through a proxy in between. Delivered within 15 minutes of your transfer confirming on-chain. If a key will not work, tell us within one hour of delivery and it is replaced or refunded. The account behind a key can be shut down by the provider at any time, so spend the credit promptly.

  • 4 credit sizes in stock
  • No card, no sign-up
  • One buyer, never resold
  • Dead on arrival? Replaced
  • Official API, not a proxy
Claude API monthly plans, paid with USDT

Claude API credit sizes and prices

Plan Credit included Price Stock
$10.00 credit $10.00 20.00 USDT Fewer than 10 available
$20.00 credit Recommended $20.00 30.00 USDT Fewer than 10 available
$50.00 credit $50.00 70.00 USDT Fewer than 5 available
$100.00 credit $100.00 150.00 USDT Fewer than 5 available

Need more than $100? Email [email protected] and we will quote a custom size.

The credit shown is the balance on the key, in Claude API’s own billing units. The USDT figure is our price for supplying the key, not a discount on that balance. We are not affiliated with Claude API.

This product is a Claude API key with prepaid credit. Supported models, usage methods, limits and billing rules may change, so check Anthropic’s official documentation before ordering and confirm that this product fits your needs. We describe the price, delivery contents and support terms; provider entitlements should be confirmed with the provider.

Topping up officially needs an overseas card and starts at $5. Without one, the usual routes are a virtual card or a reseller. What we sell is a prepaid key with credit, supplied with its base URL. Check Anthropic’s official documentation for setup and compatibility before ordering.

One thing to know up front: a normal API key cannot report its own balance — Anthropic exposes no public endpoint for it, and the usage and cost reports need an Admin key. So send one small request the moment your key arrives. That is also why the support window is one hour from delivery.

And one thing we will not hide: the account behind a key can be closed by the provider at any time, and the remaining credit goes with it. That is not covered, so buy what you are about to spend rather than stockpiling. One thing to be clear about, because much of this market is not: these keys are issued on real Anthropic accounts and point at api.anthropic.com. They are not a reverse proxy, where your requests pass through someone else’s server that can throttle them, rewrite them or keep a copy. On price, we sell above face value — a $20 key costs 30 USDT. The difference is registration: a virtual card that clears the risk checks carries an issue fee, a monthly fee and a platform cut, registration needs clean residential IPs, and it cannot be fully automated — the verification step is worked by hand. Add the accounts that get closed. It is the price of the service, not a discount on the credit.

How Claude API credits are delivered

An API credit arrives like this 
API Key:  sk-ant-api03-xxxxxxxxxxxxxxxxxxxxxxxx
Base URL: https://api.anthropic.com
Balance: $20.00
Support: one hour from delivery

On screen the moment your payment confirms, and emailed at the same time.

  1. Paste the key and base URL into your client. Use the key and base URL according to the provider’s official documentation. Confirm compatibility with your client before ordering.
  2. Send one test request straight away. A normal API key cannot report its own balance — only a test call tells you it works. Send the smallest possible request. If the key is rejected, tell us inside the support window and we replace it or refund you.
  3. Spend it promptly. The account behind a key can be shut down by the provider at any time, and once that happens the credit goes with it. Buy the size you are about to spend rather than stockpiling, and run your job soon after delivery.
One key, one buyer — support runs for one hour. Each key is sold once and never resold, and the balance is not topped up. Report a key that will not work within one hour of delivery and we make it right. After that hour, and in any case where the provider shuts the account down, the sale stands.

Claude API — questions before you buy

Is this a real Claude API key?
Yes — a key for the provider’s own API with the stated credit value. Check the provider’s official documentation for setup, compatibility and current product rules. We are an independent reseller and are not affiliated with, endorsed by, or partnered with Claude API.
Can I buy more than the largest size?
Yes — email [email protected] with the amount you need and we will quote it. Custom sizes are delivered the same way, usually the same day.
What if the key is rejected or the balance is short?
Test it the moment it arrives — one small request is enough, since a normal key cannot report its own balance. If it is rejected, tell us within one hour of delivery and we replace it or refund you in full. After that window, and for any account the provider shuts down, credits are sold as-is.
How do I pay?
USDT on the TRON network (TRC20) only. Click Buy now, enter your email, and you get an exact amount and address — the last decimals of that amount are what match your transfer to your order automatically.
What exactly does an API credit order deliver?
One key with a stated balance, plus its base URL. Check the provider’s official documentation for setup instructions, supported clients and current product rules.
Can these keys be over-burned past their balance?
Over-burning happens because the provider's billing lags: under heavy concurrency, usage can exceed the balance on the account, which then falls into arrears and is closed. It depends entirely on the provider's settlement timing, not on anything we control, so we neither promise it nor refund you for not getting it. The one thing we do promise is that the key works on arrival — replaced or refunded within one hour of delivery if it does not.
How long does an API key last?
Anthropic’s own rule is that purchased credit expires one year from the purchase date and cannot be extended — but in practice that limit almost never binds. The real limit is far shorter: the provider can shut the account behind a key down at any time, and once that happens the credit is gone and is not covered. Buy what you are about to use rather than stockpiling.
Where can I check supported features and models?
Check Anthropic’s official documentation. Features, models, limits and billing rules may change, so we do not restate them here.
Why does it cost more than face value?
Because the hard part is not the top-up, it is the registration. A virtual card that clears Stripe’s risk checks carries an issue fee and a monthly fee, and the card platform takes a cut; registration needs clean residential IPs; and it cannot be fully automated, so the verification step is worked by hand. Spread across the credit, that is the gap — plus the accounts that get closed. We print the face value on the page precisely so nobody feels misled afterwards.
Can I check the remaining balance?
Not with a normal key — Anthropic publishes no balance endpoint, and the usage and cost reports require an Admin key. A test call is the only way to verify a key works.
Can I buy a larger amount?
Yes. Sizes beyond the largest listed tier are quoted on request — email the amount you need and delivery works exactly the same way.

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