paykit
Sign inStart free
v0.1Early access

Crypto checkout,
minus the middleman tax.

Accept USDC and USDT. You hold the treasury key — we just route, sweep, and post the webhook. One POST, settled in under a minute.

Start freeSee how it works
● non-custodialgas includedHMAC-signed webhooks
curl https://paykit.octomatica.ru/api/sessions \
  -H "Authorization: Bearer pk_live_…" \
  -H "Content-Type: application/json" \
  -d '{"user_external_id": 42,
       "return_url": "https://acme.app/thanks",
       "amount_usd_cents": 4900}'
POST 200 · 124ms
{
  "token": "7f3a9c…b29c",
  "payment_url": "https://paykit.octomatica.ru/pay/7f3a9c…b29c"
}
Why paykit

Built for developers who
read the docs.

buyerpaykitroutestreasuryyour keyUSDC · sub-60s
NON-CUSTODIAL

You hold the treasury key.

paykit never custodies funds. Sweeps land directly in your wallet. If we vanished tomorrow, your money is still yours.

BitPay
2.00%
Stripe-Bridge
1.50%
Coinbase Comm.
1.00%
paykit
0.50%
2–4× CHEAPER

A fraction of what you pay today.

Stripe, Coinbase, BitPay all skim 1–2%. We charge a flat 0.5%, taken at sweep. No hidden FX spread, no settlement fee, no withdrawal fee.

0s15s30s45s60sPOSTpaydetectconfirmsweep
SUB-60s SETTLE

Detection to sweep in under a minute.

Our watcher picks up your tx within the block it confirms. The relayer signs and broadcasts the sweep within seconds.

Get your first payment in five minutes.
Free for 15 transactions a month. No card, no contract, no demo call.
Start freeSee how it works
Pricing

One flat rate. No FX. No surprises.

0.5% per transaction, taken automatically when funds are swept to your treasury. Pro is $29 a month, paid in USDC. Network gas is included — paykit pays it.

EARLY ACCESSEvery new merchant gets Pro free for 30 days. The 0.5% fee is taken automatically at sweep — nothing to pay separately.
Free
$0/mo
0.5% per tx15 tx / mo
  • 15 transactions a month
  • 1 project
  • Signed webhooks
  • Standard support
Start free
RECOMMENDED
Pro
$29/mo
0.5% per tx10,000 tx / mo
  • 10,000 transactions a month
  • Up to 10 projects
  • Signed webhooks
  • Priority support
Start 30-day trial
Custom
Let's talk
negotiatedunlimited
  • Unlimited transactions
  • As many projects as you need
  • Signed webhooks
  • SLA, custom domain, dedicated support
Contact us
Security & trust

The boring kind of safe.

No token issuance

paykit never holds custody or mints anything. Real USDC/USDT only.

Signed webhooks

Every event is HMAC-signed with your endpoint secret, carries an idempotency id, and is retried five times over 12 hours. Replay any delivery from the dashboard.

Standard key formats

Your treasury is a plain EVM keypair — or any address you already own. Import it into MetaMask, Rabby or a hardware wallet any time.

Audit log

Every admin and key action is written to an append-only audit log.

Kill switch

We can freeze session creation for any merchant within minutes — one message to us, no deploy. Funds already on chain are unaffected.

Reviewed before go-live

Every new merchant is approved by a human before the first session. No anonymous drive-by accounts on the same rails as yours.

FAQ

Questions a CTO would ask.

Can't find what you need? Email labs@octomatica.ru — answers come from a human, not a router.

Because we never want to be a custodian of your money. paykit signs the sweep on your behalf using a relayer key, but the destination is a wallet whose private key only you ever see. If paykit goes down, your USDC is in your wallet, not ours.

Five lines of code.
Five minutes to live.

Free for 15 transactions a month. No card, no contract.