Mallorn RPC

Low-latency transaction submission for trading firms on Ethereum, Base, Arbitrum and Robinhood Chain. Your transactions land fast. When they create MEV, you get paid.

Overview

Mallorn does two things:

Fast landing. We run optimised network routes to the Base, Arbitrum and Robinhood sequencers and direct connections to Ethereum block builders. Your transaction takes the shortest path to inclusion.

MEV rebates. If your trade opens an arbitrage, we backrun it in the same block and pay you a share of the profit. We only trade after you: your transaction is never reordered or front-run, and your fill price is unchanged.

Endpoints

<AUTH> is your API key.

Chain	Endpoint
Ethereum	`http://eth-rpc.valres.dev:57725/?auth=<AUTH>`
Base	`http://base-rpc.valres.dev:57725/?auth=<AUTH>`
Arbitrum	`http://arb-rpc.valres.dev:57725/?auth=<AUTH>`
Robinhood	`http://robinhood-rpc.valres.dev:57725/?auth=<AUTH>`

More EVM chains on request.

Integration

Sign your transaction and submit the signed raw transaction to the chain endpoint via eth_sendRawTransaction.

Exclusive flow. Submit the transaction to us exclusively. Do not send it to anyone else, no other provider, no public mempool, no block builder, otherwise you risk being blind backran by a searcher who won't pay you. We take care of landing it. Exclusivity is what lets us backrun it and pay you back the arbitrage.

Block builders. On Ethereum, we forward your transactions to trusted block builders. If you have specific requests of builders to always include or exclude, let us know and we will adjust.

Latency-sensitive strategies. We can colocate and make sure your transactions land where and when you expect. Reach out and we will set it up for you.

eth_sendRawTransaction

Submits a signed transaction to Mallorn for backrunning. Each endpoint exposes this method only.

Endpoint

JSON-RPC 2.0 over HTTP POST. Your API key is the auth query parameter.

http://<chain>-rpc.valres.dev:57725/?auth=<AUTH>

Parameters

Parameter	Description
`params[0]`	Signed transaction data, 0x-prefixed RLP-encoded hex. Required.

Request

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_sendRawTransaction",
  "params": ["0x02f8..."]
}

curl http://base-rpc.valres.dev:57725/?auth=<AUTH> \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_sendRawTransaction","params":["0x02f8..."]}'

Response

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x<transactionHash>"
}

FAQ

How much revenue should I expect?

Around $0.30 per transaction on average. The distribution is heavily skewed: a single transaction can pay a few hundred thousand dollars. To date, we have generated millions of dollars in revenue for our clients.

How long does it take to integrate?

A day at most, with proper testing. We provide an RPC URL to send transactions to.

How long has Valinor Research been operating for?

The team has worked in the crypto space since 2021.

API keys

Message us with the chains you trade and your region.