Crypto Processing API for Builders # Build your own crypto payment processing A developer-first, non-custodial API for the on-chain part of crypto payments — wallets, PayIns, PayOuts, webhooks and settlement routing across every major blockchain. You build the product, the business logic and the merchant relationships; we run the infrastructure. Pay per technical action from a pre-paid API token balance — no percentage on your volume, no on/off-ramp, no merchant management on our side. [Get Started](https://auth.crypto-chief.com/registration) [Documentation](https://docs-processing.crypto-chief.com/) ### 100M+ Processed blockchain events ### 99.99% Guaranteed delivery & uptime ## The on-chain primitives for your own crypto processing Crypto-native API building blocks for wallets, PayIns, PayOuts, settlements and gas-optimized transaction routing across every major network. You compose the product, we run the on-chain plumbing. ##### API-first integration A unified REST API for wallets, PayIns, PayOuts and events. Integrate in hours and ship blockchain payments without touching nodes. ##### Non-custodial by design Funds stay yours. We never hold client assets, never touch merchant balances, never run on/off-ramp — keys are isolated and encrypted. ##### Pay per call, not per volume Pre-load API tokens in your dashboard; every PayIn, PayOut and webhook is metered against that balance. Zero percentage on your transaction volume. ## Build deposit & payout flows on every major chain A single unified integration for deposits and withdrawals across all major blockchains. Detect incoming transactions, validate amounts, trigger webhooks, and broadcast gas-optimized PayOuts straight from your own wallets — without manual on-chain work. - Multichain support (EVM, Tron, Solana, Bitcoin, TON & more) - Real-time event monitoring with guaranteed webhook delivery - Gas-optimized PayOuts from your own non-custodial wallets ## Compose custom workflows on real-time on-chain events PayIn verification, wallet monitoring, auto-sweep, PayOut execution, settlement routing, risk hooks — wire them up your way through the API and webhooks. Your business logic stays in your stack; the on-chain mechanics stay in ours. [Get started for free](https://auth.crypto-chief.com/registration) ## Observe every on-chain action in your payment flow From incoming deposits to settlement routing and PayOut broadcasting — every step is logged, exposed via API and delivered via webhooks. Full transparency, predictable per-call costs, no surprises in your billing. ## Why developers choose our processing API “ Built for teams shipping real products: a clean, predictable API for the on-chain part of crypto payments. No custody, no commissions on your volume, no vendor lock-in — you keep ownership of wallets, merchants and billing logic, we keep the nodes running. ” ##### API, not a gateway You build the product; we run the on-chain plumbing “ Millions of blockchain events handled with guaranteed delivery, real-time monitoring and horizontal scaling. Whether you process 100 or 100,000 payments a day, the system stays stable — no missed transactions, no delays, no per-volume surprises in your bill. ” ##### Extreme Reliability Zero-loss events, action-based billing ## Frequently asked questions Answers to the most common questions about how our crypto processing API works, what's covered (and what isn't), pre-paid action billing, multichain support and security. ### What exactly is Crypto Chief Crypto Processing? It's a high-level, developer-first API for building your own crypto payment processing. We give you the on-chain primitives — wallets, PayIn detection, PayOut execution, webhooks, settlement routing — and you build the product, business logic, merchant management and billing on top. We are infrastructure, not a turnkey gateway. ### Do you take a percentage of my transaction volume? No. We never charge a percentage of your processed volume. Billing is action-based — you pay only for technical operations (PayIns, PayOuts, wallet events, webhooks) deducted from the API token balance you pre-load in your dashboard. ### Do I need to maintain a balance to use the API? Yes. The Crypto Processing API runs on a pre-paid API token balance held inside your Crypto Chief account. Every API call is metered against that balance. Top it up at any time — when it runs out, processing is paused until you top up again. ### Do you do fiat on-ramp or off-ramp? No. Crypto Chief is pure on-chain infrastructure — we don't operate any fiat rails, conversion or exchange services. If you need fiat-to-crypto or crypto-to-fiat for your end users, plug in a dedicated on/off-ramp provider alongside our processing API. ### Do you manage funds or merchants on my behalf? No. We never hold client funds and we never manage your merchants. Wallets stay non-custodial, encrypted keys are operational only for the flows you configure. Merchant onboarding, KYC, billing and disputes are entirely your responsibility — the API is the building block. ### I want a turnkey platform, not an API. Do you have that? Yes — our [Whitelabel](/whitelabel/) solution turns this API into a complete branded crypto processing platform with operator admin panel, merchant dashboards, a payment terminal and full documentation. It's sales-led — [contact us](/contact/) to scope a deployment. ### Start building with the API Sign up, top up your API token balance and ship on-chain payments — PayIns, PayOuts, wallets and webhooks. Action-based pricing, no commission on your volume. Need a branded turnkey platform instead? See [Whitelabel](/whitelabel/). [Get Started ](https://auth.crypto-chief.com/registration)