I have deployed both 0x-launch-kit-backend and 0x-launch-kit-frontend in my local system I can able to create a sell order. It is listed in orders I am running things in Ropsten Testnet

In 0X Instant Html code . I replace my relayer URL in orderSource and mention networkId:3

I can get values in record in asset_pairs api

While run instant in-browser got "Tokens Unavailable".

Thanks in advance

1 Answer 1


0x Instant doesn't have Ropsten testnet tokens as a default. Only Mainnet and Kovan.

You can add additional asset data to Instant in these cases:

    orderSource: RELAYER_URL,
    availableAssetDatas: ['0xf47261b0000000000000000000000000744d70fdbe2bc4cf95131626614a1764df805b9e'],
    additionalAssetMetaDataMap: {
        '0xf47261b0000000000000000000000000744d70fdbe2bc4cf95131626614a1764df805b9e': {
            assetProxyId: '0xf47261b0', // ERC20 Proxy Id
            decimals: 18,
            primaryColor: '#F2F7FF', // Optional
            symbol: 'XXX',
            name: 'My Custom Token'
  • Thank you for your reply. I change the network to the kovan testnet. Still, I face the same problem. Jul 29, 2019 at 7:19
  • I can manually mention assetData in HTML code and get the required data. Jul 29, 2019 at 9:19
  • How can I set this token detect automatically Jul 31, 2019 at 7:25
  • What is the Token? We do not provide an exhaustive list of all tokens on all networks for 0x Instant. This is left up to the implementor in most cases. Aug 2, 2019 at 1:28

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