op-challenger

op-challenger

The op-challenger is a modular op-stack challenge agent written in golang for dispute games including, but not limited to, attestation games, fault games, and validity games. To learn more about dispute games, visit the dispute game specs.

Quickstart

First, clone this repo. Then, run make, which will build all required targets. Alternatively, run make devnet to bring up the devnet which deploys the mock dispute game contracts as well as an op-challenger instance.

Alternatively, you can build the op-challenger binary locally using the pre-configured Makefile target by running make build, and then running ./op-challenger --help to see a list of available options.

Usage

op-challenger is configurable via command line flags and environment variables. The help menu shows the available config options and can be accessed by running ./op-challenger --help.

Note that there are many global options, but the most important ones are:

• OP_CHALLENGER_L1_ETH_RPC: An L1 Ethereum RPC URL
• OP_CHALLENGER_ROLLUP_RPC: A Rollup Node RPC URL
• OP_CHALLENGER_L2OO_ADDRESS: The L2OutputOracle Contract Address
• OP_CHALLENGER_DGF_ADDRESS: Dispute Game Factory Contract Address

Here is a reduced output from running ./op-challenger --help:

NAME:
   op-challenger - Modular Challenger Agent
USAGE:
   main [global options] command [command options] [arguments...]
VERSION:
   1.0.0
DESCRIPTION:
   A modular op-stack challenge agent for output dispute games written in golang.
COMMANDS:
   help, h  Shows a list of commands or help for one command
GLOBAL OPTIONS:
   --l1-eth-rpc value                      HTTP provider URL for L1. [$OP_CHALLENGER_L1_ETH_RPC]
   --rollup-rpc value                      HTTP provider URL for the rollup node. [$OP_CHALLENGER_ROLLUP_RPC]
   --l2oo-address value                    Address of the L2OutputOracle contract. [$OP_CHALLENGER_L2OO_ADDRESS]
   --dgf-address value                     Address of the DisputeGameFactory contract. [$OP_CHALLENGER_DGF_ADDRESS]
   ...
   --help, -h                              show help
   --version, -v                           print the version