Every guide, concept, and reference under the Payments tab, grouped by what you’re trying to do.Documentation Index
Fetch the complete documentation index at: https://docs.stable.xyz/llms.txt
Use this file to discover all available pages before exploring further.
Send and transfer
Send your first USDT0
Native and ERC-20 transfers on the same balance.
Zero gas transactions
Transfer USDT0 with the fee covered by a Gas Waiver.
Work with USDT0 as gas
Construct transactions correctly: priority tip 0,
value in USDT0.Bridge USDT0 to Stable
Bridge from Ethereum Sepolia using LayerZero OFT.
Build a payment flow
Learn P2P payments
Wallet + send + receive + history in one app.
Subscribe and collect
Pull-based recurring billing via EIP-7702.
Paying with invoice
ERC-3009 with deterministic nonces for invoice settlement.
Build a pay-per-call API
Monetise HTTP endpoints with x402 middleware.
Protocols and references
ERC-3009
Transfer With Authorization: the signed-settlement primitive.
x402 (HTTP-native payments)
Server responds 402, client signs, facilitator settles on-chain.
P2P payments reference
Model overview and comparison to traditional rails.
Subscriptions reference
Pull-based billing model and trade-offs.
Invoices reference
Deterministic-nonce settlement model.
Pay-per-call reference
x402 pricing and endpoint discovery model.
Upcoming use cases
Guaranteed settlement, confidential payments, agent-to-agent.