Supported Assets

The Bridge API accepts deposits from multiple blockchains, converting them to USDC.e on Polygon for use as trading collateral. This endpoint lists every supported chain, token, and the minimum deposit threshold.

Endpoint

GET https://bridge.openfish.fun/supported-assets

No authentication is required.

Example Request

curl https://bridge.openfish.fun/supported-assets

Response

{
  "supported_assets": [
    {
      "chain_id": "1",
      "chain_name": "Ethereum",
      "token": {
        "name": "USD Coin",
        "symbol": "USDC",
        "address": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
        "decimals": 6
      },
      "min_checkout_usd": 7.0
    },
    {
      "chain_id": "137",
      "chain_name": "Polygon",
      "token": {
        "name": "Bridged USDC",
        "symbol": "USDC.e",
        "address": "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174",
        "decimals": 6
      },
      "min_checkout_usd": 2.0
    }
  ],
  "note": "Supported chains and tokens for deposits and withdrawals."
}

Response Fields

SupportedAsset

Field	Type	Description
chain_id	string	Numeric chain identifier
chain_name	string	Human-readable chain name
token	object	Token details (see below)
min_checkout_usd	number	Minimum deposit amount in USD equivalent

Token

Field	Type	Description
name	string	Full token name
symbol	string	Token ticker symbol
address	string	Contract address on the given chain
decimals	number	Token decimal places

Multi-Chain Support

Openfish bridges three chain families:

Chain Family	Address Type	Typical Chains
EVM	evm	Ethereum, Polygon, Arbitrum, Base, Optimism, BSC
Solana	svm	Solana mainnet
Bitcoin	btc	Bitcoin mainnet

Minimum Deposit Amounts

Every asset carries a min_checkout_usd value. Deposits below this floor may not be processed. Representative minimums:

• L2 chains (Polygon, Arbitrum, Base, Optimism): ~$2
• Ethereum mainnet: ~$7
• Bitcoin: ~$9

These thresholds are configured per-token and can change. Always query this endpoint for the latest minimums before sending a transfer.

Rust SDK Example

use openfish_client_sdk::BridgeClient;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let bridge = BridgeClient::new("https://bridge.openfish.fun");

    let assets = bridge.supported_assets().await?;

    for asset in &assets.supported_assets {
        println!(
            "{} ({}) on {} -- min ${:.2}",
            asset.token.symbol,
            asset.token.address,
            asset.chain_name,
            asset.min_checkout_usd,
        );
    }

    Ok(())
}

Best Practices

• Query this endpoint before every deposit to confirm the token is still supported and to verify the current minimum.
• Filter by chain_id to narrow results to a specific chain.
• Use the decimals field to convert correctly between human-readable amounts and base units.

Next Steps

• Deposit — Generate deposit addresses after confirming your token is supported.
• Get a Quote — Preview conversion fees and expected output.
• Check Status — Monitor deposit progress.