Features and Services#
Onchain OS Payment provides protocol-native on-chain payment capabilities for APIs, MCP tools, and AI Agents. Built on the x402 open protocol, running on the X Layer network.
Who Is It For?#
Seller
Can be an API service provider, an MCP tool provider, or an Agent that offers external services.
Typical scenarios:
- Paid APIs such as weather, exchange rates, and on-chain data: charged per call, deducted upon invocation
- MCP tools such as code generation, translation, and image recognition: automatic payment when called by an Agent
- Agent services providing strategy signals and risk scoring: Agent-to-Agent transactions with automatic pricing and settlement
Buyer
Can be an ordinary user's Agent, or a developer providing App services on behalf of the Buyer.
Typical scenarios:
- Purchase paid data sources on demand through an Agent, with automatic payment and data retrieval
- Call and purchase on-chain analytics APIs through an Agent, making autonomous decisions based on results
- Integrate paid services in your App backend; users initiate payment, and the backend handles payment automatically
How It Works#
The core interaction of Onchain OS Payment is a four-step flow:
- Buyer requests a resource
- Seller returns payment requirements (amount, token, network)
- Buyer re-requests with a signed credential attached
- Seller verifies and returns the resource
No account registration required, no manual intervention.
Payment Methods#
The only difference between payment methods lies in the settlement rhythm: Instant Payment settles on-chain immediately after each signature, while Batch Payment allows the Buyer to sign multiple times to access resources first, and then the Seller batches multiple transactions into a single on-chain settlement.
Choose the payment method that fits your business scenario:
| Payment Method | Use Case | Settlement Method | Compatible Protocol |
|---|---|---|---|
| Instant Payment | Single API call, content purchase, low-frequency high-value | Independent on-chain settlement per request | x402 |
| Batch Payment | High-frequency micro-payments, micropayments, Agent autonomous transactions | Buyer signs multiple times, Seller batches and settles on-chain | x402 |
Not sure which one to choose? Start with One-time Payment -- integration takes just 5 minutes.
Why Choose Onchain OS Payment#
Flexible Payment Methods -- Instant Payment and Batch Payment cover the vast majority of payment scenarios.
Zero Gas -- Transfers and payments using USDG / USDT on X Layer incur zero Gas fees. Off-chain signing in Batch Payment mode also means zero Gas.
Multi-Token Support -- Supports major stablecoins including USDT and USDG.
SDK -- SDKs available in Node.js, Rust, and Go.
Built-in Compliance -- KYT (Know Your Transaction) risk identification is built into every payment, with no additional integration required.
Open Standard -- Built on the x402 protocol, not locked into any single platform.