> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tentaclepay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported networks

> Sui networks and tokens supported by the Tentacle Pay facilitator.

The facilitator settles x402 payments on Sui Mainnet and Sui Testnet, identified with [CAIP-2](https://chainagnostic.org/CAIPs/caip-2) network IDs.

| Network     | CAIP-2 ID     | Full node (gRPC)                      |
| ----------- | ------------- | ------------------------------------- |
| Sui Mainnet | `sui:mainnet` | `https://fullnode.mainnet.sui.io:443` |
| Sui Testnet | `sui:testnet` | `https://fullnode.testnet.sui.io:443` |

## Tokens

USDC is the default stablecoin on both networks. On mainnet, Sui covers gas for transfers of every stablecoin below natively, and the facilitator sponsors what the native path doesn't — sub-cent payments and any non-stablecoin coin. Either way, a payment of any size settles gasless. All listed tokens use **6 decimals**.

### Mainnet

| Token                | Symbol     | Native gasless min |
| -------------------- | ---------- | ------------------ |
| USDC (default)       | `USDC`     | 0.01               |
| Sui USD              | `USDSUI`   | 0.01               |
| Ethena sUSDe         | `SUI_USDE` | 0.01               |
| Ondo US Dollar Yield | `USDY`     | 0.01               |
| First Digital USD    | `FDUSD`    | 0.01               |
| Agora Dollar         | `AUSD`     | 0.01               |
| USDB                 | `USDB`     | 0.01               |

The native gasless minimum is the smallest transfer [Sui covers gas for natively](https://docs.sui.io/develop/transaction-payment/gasless-stablecoin-transfers) (`0.01` of the token, or `10000` atomic units at 6 decimals). Payments below it still settle gasless — the facilitator sponsors them.

<Accordion title="Mainnet coin types">
  ```text theme={null}
  USDC     0xdba34672e30cb065b1f93e3ab55318768fd6fef66c15942c9f7cb846e2f900e7::usdc::USDC
  USDSUI   0x44f838219cf67b058f3b37907b655f226153c18e33dfcd0da559a844fea9b1c1::usdsui::USDSUI
  SUI_USDE 0x41d587e5336f1c86cad50d38a7136db99333bb9bda91cea4ba69115defeb1402::sui_usde::SUI_USDE
  USDY     0x960b531667636f39e85867775f52f6b1f220a058c4de786905bdf761e06a56bb::usdy::USDY
  FDUSD    0xf16e6b723f242ec745dfd7634ad072c42d5c1d9ac9d62a39c381303eaa57693a::fdusd::FDUSD
  AUSD     0x2053d08c1e2bd02791056171aab0fd12bd7cd7efad2ab8f6b9c8902f14df2ff2::ausd::AUSD
  USDB     0xe14726c336e81b32328e92afc37345d159f5b550b09fa92bd43640cfdd0a0cfd::usdb::USDB
  ```
</Accordion>

### Testnet

| Token          | Symbol | Native gasless min |
| -------------- | ------ | ------------------ |
| USDC (default) | `USDC` | none               |

On testnet the facilitator sponsors gas for USDC payments of any size, so there's no native minimum to clear.

<Accordion title="Testnet coin types">
  ```text theme={null}
  USDC 0xa1ec7fc00a6f40db9693ad1415d0c193ad3906494428cf252621037bd7117e29::usdc::USDC
  ```
</Accordion>

<Tip>
  Get testnet SUI and USDC from the [Sui faucet](https://faucet.sui.io) to try payments at no cost.
</Tip>

## Block explorers

Look up a settlement by its transaction digest:

| Network | Explorer                                         |
| ------- | ------------------------------------------------ |
| Mainnet | `https://suivision.xyz/txblock/<digest>`         |
| Testnet | `https://testnet.suivision.xyz/txblock/<digest>` |

## Pricing in USD

When you price a route as a USD string (for example `"$0.01"`), `ExactSuiScheme` converts it to the default stablecoin (USDC) at 6 decimals. To charge in another token, pass an explicit `AssetAmount` with the token's coin type — see [Quickstart for sellers](/x402/quickstart-for-sellers).