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Radar Relay

About Radar Relay Connector

Radar Relay is an exchange application specializing in ERC-20 tokens that uses the 0x Protocol. Founded in 2017, it is a newer exchange that has rapidly gained users and features continuous trading with its off-chain order book.

Using the Connector

Because Radar Relay is a decentralized exchange, you will need an independent cryptocurrency wallet and an ethereum node in order to use Hummingbot. See below for information on how to create these:

Miscellaneous Info

Minimum Order Size

Each trading pair has a unique minimum order size denominated in the base currency. You can access the minimum order size for a specific token pair using Radar Relay's API (Broken Link as of June 01,2021), at the following URL:


For example, for ZRX-WETH, navigate to: https://api.radarrelay.com/v3/markets/ZRX-WETH.

Sample output:

  "id": "ZRX-WETH",
  "displayName": "ZRX/WETH",
  "baseTokenAddress": "0xe41d2489571d322189246dafa5ebde1f4699f498",
  "quoteTokenAddress": "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
  "baseTokenDecimals": 18,
  "quoteTokenDecimals": 18,
  "quoteIncrement": 8,
  "minOrderSize": "0.04568281", <== ** MINIMUM ORDER SIZE **
  "maxOrderSize": "1000000000",
  "score": 66.7,
  "active": 1

In this example, the minimum order size is 0.04568281 ZRX.

For additional information, see this page. For the most part, the smallest order size allowed is about the equivalent of \$1.


Transaction Fees

Presently, Radar Relay does not charge trading or withdrawal fees, and the only additional cost for transactions is the gas network costs. This may change in the future as the exchange develops a larger user base.

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