RPC Compatibility

ev-abci provides CometBFT-compatible RPC endpoints for client compatibility.

Overview

Existing Cosmos SDK clients expect CometBFT RPC endpoints. ev-abci implements these endpoints so tools like:

• Cosmos SDK CLI
• Keplr wallet
• CosmJS
• Block explorers

continue to work without modification.

Supported Endpoints

Query Methods

Endpoint	Status	Notes
/abci_query	✓	Full support
/block	✓	Full support
/block_by_hash	✓	Full support
/block_results	✓	Full support
/blockchain	✓	Full support
/commit	✓	Full support
/consensus_params	✓	Full support
/genesis	✓	Full support
/health	✓	Full support
/status	✓	Full support
/tx	✓	Full support
/tx_search	✓	Full support
/validators	✓	Returns sequencer

Transaction Methods

Endpoint	Status	Notes
/broadcast_tx_async	✓	Full support
/broadcast_tx_sync	✓	Full support
/broadcast_tx_commit	✓	Waits for inclusion
/check_tx	✓	Full support

Subscription Methods

Endpoint	Status	Notes
/subscribe	✓	WebSocket events
/unsubscribe	✓	Full support
/unsubscribe_all	✓	Full support

Unsupported Endpoints

Endpoint	Reason
/consensus_state	No BFT consensus
/dump_consensus_state	No BFT consensus
/net_info	Different P2P model
/num_unconfirmed_txs	Different mempool
/unconfirmed_txs	Different mempool

Behavioral Differences

Validators

/validators returns the single sequencer rather than a validator set:

{
  "validators": [
    {
      "address": "...",
      "voting_power": "1",
      "proposer_priority": "0"
    }
  ],
  "count": "1",
  "total": "1"
}

Commit

/commit returns a simplified commit structure since there's no BFT voting:

{
  "signed_header": {
    "header": { ... },
    "commit": {
      "height": "100",
      "signatures": [
        {
          "validator_address": "...",
          "signature": "..."
        }
      ]
    }
  }
}

Block Time

Block timestamps reflect actual production time, which may be faster than CometBFT's typical 6s blocks.

Port Configuration

Default ports match CometBFT:

Port	Purpose
26657	RPC
26656	P2P

Configure via flags:

--evnode.rpc.address tcp://0.0.0.0:26657
--evnode.p2p.listen /ip4/0.0.0.0/tcp/26656

Client Configuration

No client changes needed. Point clients at the same RPC URL:

// CosmJS
const client = await StargateClient.connect("http://localhost:26657");

# CLI
appd config node tcp://localhost:26657