chore: add memento-demo testnet

[AttissNgo]

Temporary testnet connection for Memento demo

Greptile Summary

Updated On: 2025-09-19 20:13:42 UTC

This PR adds a new testnet chain configuration called "memento-demo" to the Axelar network's testnet configuration. The change introduces a comprehensive setup for chain ID 2129 with the name "Memento Demo", including all standard Axelar components for cross-chain functionality.

The configuration follows the established pattern for amplifier-connected EVM chains, adding entries to both the chains section (for the target blockchain configuration) and the axelar.contracts section (for Axelar's CosmWasm contracts that manage cross-chain operations). The setup includes:

• EVM-side contracts: AxelarGateway, AxelarGasService, InterchainTokenService (ITS), InterchainTokenFactory, and Operators contracts with their respective addresses and deployment metadata
• Axelar-side contracts: MultisigProver, Gateway, and VotingVerifier contracts to handle cross-chain message verification and routing
• Network parameters: Optimized for demo purposes with minimal confirmation requirements (1 confirmation, 1 finality) to enable fast transaction processing

This configuration enables the Memento chain to participate in Axelar's cross-chain ecosystem, allowing for token transfers and general message passing between Memento and other supported chains. The "amplifier" connection type indicates this chain uses Axelar's newer amplifier architecture for enhanced security and decentralization.

Changed Files

Filename	Score	Overview
axelar-chains-config/info/testnet.json	2/5	Adds memento-demo testnet configuration with comprehensive contract setup but has empty RPC field preventing connectivity

Confidence score: 2/5

• This PR has a critical issue that prevents the new chain from being functional due to an empty RPC endpoint
• Score reflects a blocking configuration error that would cause connection failures for any application trying to use this chain
• Pay close attention to the empty RPC field in the memento-demo configuration which needs to be populated with a valid endpoint

[greptile-apps]

_{1 file reviewed, 1 comment}

_{Edit Code Review Bot Settings | Greptile}

[nbayindirli]

lgtm