# crypto.link.com

crypto.link.com is Link's crypto onramp powered by Stripe. It enables purchasing of cryptocurrency
directly with a credit card, debit card, or bank transfer and have it delivered to the users specified wallet.

## API

### POST /agents/create_session

**Request parameters** (all optional):

`destination_currency` — The cryptocurrency to purchase. Examples: `usdc`, `eth`, `btc`, `sol`.

`destination_network` — The blockchain network. Examples: `ethereum`, `base`, `bitcoin`, `solana`.

Both should be specified together. Supported combinations:

- USDC on Base: `destination_currency=usdc`, `destination_network=base`
- USDC on Ethereum: `destination_currency=usdc`, `destination_network=ethereum`
- USDC on Solana: `destination_currency=usdc`, `destination_network=solana`
- USDC on Polygon: `destination_currency=usdc`, `destination_network=polygon`
- USDC on Optimism: `destination_currency=usdc`, `destination_network=optimism`
- USDC on Avalanche: `destination_currency=usdc`, `destination_network=avalanche`
- USDC on Stellar: `destination_currency=usdc`, `destination_network=stellar`
- USDC on Aptos: `destination_currency=usdc`, `destination_network=aptos`
- USDC on Worldchain: `destination_currency=usdc`, `destination_network=worldchain`
- ETH on Ethereum: `destination_currency=eth`, `destination_network=ethereum`
- ETH on Base: `destination_currency=eth`, `destination_network=base`
- ETH on Optimism: `destination_currency=eth`, `destination_network=optimism`
- BTC on Bitcoin: `destination_currency=btc`, `destination_network=bitcoin`
- SOL on Solana: `destination_currency=sol`, `destination_network=solana`
- MATIC on Polygon: `destination_currency=matic`, `destination_network=polygon`
- AVAX on Avalanche: `destination_currency=avax`, `destination_network=avalanche`
- APT on Aptos: `destination_currency=apt`, `destination_network=aptos`
- WLD on Worldchain: `destination_currency=wld`, `destination_network=worldchain`
- XLM on Stellar: `destination_currency=xlm`, `destination_network=stellar`
- XRP on XRPL: `destination_currency=xrp`, `destination_network=xrpl`
- RLUSD on XRPL: `destination_currency=rlusd`, `destination_network=xrpl`
- RLUSD on Ethereum: `destination_currency=rlusd`, `destination_network=ethereum`

`supported_destination_currencies` — Comma-separated list of currencies to offer.
Example: `supported_destination_currencies=usdc,eth,sol`

`supported_destination_networks` — Comma-separated list of networks to offer.
Example: `supported_destination_networks=base,ethereum,solana`

`source_amount` — Amount in USD the user wants to spend. Example: `50.00`

`destination_amount` — Amount of crypto the user wants to receive. Specify at most one of
`source_amount` or `destination_amount`.

`wallet_addresses` — A hash of wallet addresses keyed by network name. The address must be valid
for the specified network.
Example: `wallet_addresses[base_network]=0x...`

**Response:**

```
{
  "redirect_url": "https://crypto.link.com?session_hash=123"
}
```

After receiving the `redirect_url`, redirect the user to that URL to complete the onramp purchase.

**Example curl request:**

```
curl -X POST https://crypto.link.com/agents/create_session   -d "destination_currency=usdc"   -d "destination_network=base"   -d "wallet_addresses[base_network]=0x1234567890abcdef1234567890abcdef1234567"
```