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

# Supported Chains

> HYRE accepts USDC payments on Solana, Base, and SKALE.

# Supported Chains

HYRE accepts x402 payments on three chains. All chains return identical API data -- the only difference is the payment network and gas cost.

***

## Chain Comparison

|                     | Solana                                         | Base                                         | SKALE                                                                     |
| ------------------- | ---------------------------------------------- | -------------------------------------------- | ------------------------------------------------------------------------- |
| **Network ID**      | `solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp`      | `eip155:8453`                                | `eip155:1187947933`                                                       |
| **Gas token**       | SOL                                            | ETH                                          | sFUEL                                                                     |
| **Gas cost**        | \~\$0.0005 (sponsored)                         | \~\$0.01                                     | Free                                                                      |
| **USDC contract**   | `EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v` | `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` | `0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20`                              |
| **Pay-to address**  | `7G73PLhKvAPBGTzG5ESAE4coE7QrVeTTKfhTxQZbyGgC` | `0xb5998e11E666Fd1e7f3B8e8d9122A755eec1E9b7` | `0xb5998e11E666Fd1e7f3B8e8d9122A755eec1E9b7`                              |
| **Facilitator**     | Dexter                                         | PayAI                                        | PayAI                                                                     |
| **Facilitator URL** | `https://x402.dexter.cash`                     | `https://facilitator.payai.network`          | `https://facilitator.payai.network`                                       |
| **Settlement time** | \~400ms                                        | \~2s                                         | \~1s                                                                      |
| **API prefix**      | `/` (root)                                     | `/base/`                                     | `/skale/`                                                                 |
| **Explorer**        | [Solscan](https://solscan.io)                  | [BaseScan](https://basescan.org)             | [SKALE Explorer](https://elated-tan-skat.explorer.mainnet.skalenodes.com) |

***

## Solana (Recommended)

Solana is the primary payment chain for HYRE. Gas fees are sponsored by the HYRE fee payer, so callers pay only the endpoint price in USDC.

* **Facilitator:** Dexter (`x402.dexter.cash`)
* **Payment format:** Solana transaction with USDC transfer
* **URL prefix:** Root paths (`/trenches/new-tokens`, `/defi/tvl`, etc.)

```bash theme={null}
curl -X POST https://mpp.hyreagent.fun/defi/tvl \
  -H "X-PAYMENT: <solana-payment>" \
  -H "Content-Type: application/json" \
  -d '{"chain": "solana"}'
```

***

## Base

Base (Coinbase L2) offers low gas fees and wide EVM wallet compatibility.

* **Facilitator:** PayAI (`facilitator.payai.network`)
* **Payment format:** EIP-3009 TransferWithAuthorization (EIP-712 signed)
* **URL prefix:** `/base/` prefix

```bash theme={null}
curl -X POST https://mpp.hyreagent.fun/base/defi/tvl \
  -H "X-PAYMENT: <base-payment>" \
  -H "Content-Type: application/json" \
  -d '{"chain": "solana"}'
```

***

## SKALE

SKALE offers zero gas fees through its sFUEL mechanism. Ideal for cost-sensitive agents and high-frequency queries.

* **Facilitator:** PayAI (`facilitator.payai.network`)
* **Payment format:** EIP-3009 TransferWithAuthorization (EIP-712 signed)
* **URL prefix:** `/skale/` prefix
* **Chain name:** SKALE Europa (chain ID: 1187947933)

```bash theme={null}
curl -X POST https://mpp.hyreagent.fun/skale/defi/tvl \
  -H "X-PAYMENT: <skale-payment>" \
  -H "Content-Type: application/json" \
  -d '{"chain": "solana"}'
```

<Info>
  SKALE USDC is bridged from Ethereum mainnet via the SKALE Bridge. The USDC contract on SKALE is `0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20`.
</Info>

***

## RPC Endpoints

| Chain  | RPC URL                                               |
| ------ | ----------------------------------------------------- |
| Solana | Use any Solana RPC (e.g., Helius, Alchemy, QuickNode) |
| Base   | `https://mainnet.base.org`                            |
| SKALE  | `https://mainnet.skalenodes.com/v1/elated-tan-skat`   |