Client

The tx raw commands can be used to create and update the on-chain IBC clients.

Table of Contents

• Create Client
• Update Client

Create Client

Use the create-client command to create a new client.

USAGE:
    hermes tx raw create-client <OPTIONS>

DESCRIPTION:
    Create a client for source chain on destination chain

POSITIONAL ARGUMENTS:
    dst_chain_id              identifier of the destination chain
    src_chain_id              identifier of the source chain

Example

Create a new client of ibc-1 on ibc-0:

hermes tx raw create-client ibc-0 ibc-1

{
    Success: CreateClient(
        CreateClient(
            Attributes {
                height: Height { revision: 0, height: 43 },
                client_id: ClientId(
                    "07-tendermint-0",
                ),
                client_type: Tendermint,
                consensus_height: Height { revision: 1, height: 32 },
            },
        ),
    )
}

A new client is created with identifier 07-tendermint-0

Update Client

Use the update-client command to update an existing client with a new consensus state. Specific update and trusted heights can be specified.

USAGE:
    hermes tx raw update-client <OPTIONS>

DESCRIPTION:
    Update the specified client on destination chain

POSITIONAL ARGUMENTS:
    dst_chain_id              identifier of the destination chain
    dst_client_id             identifier of the client to be updated on destination chain

FLAGS:
    -h, --target-height TARGET-HEIGHT
    -t, --trusted-height TRUSTED-HEIGHT

Example

Update the client on ibc-0 with latest header of ibc-1

hermes tx raw update-client ibc-0 07-tendermint-0

Success: UpdateClient(
    UpdateClient {
        common: Attributes {
            height: Height { revision: 0, height: 110 },
            client_id: ClientId(
                "07-tendermint-0",
            ),
            client_type: Tendermint,
            consensus_height: Height { revision: 1, height: 109 },
        },
        header: Some(
            Tendermint(
                 Header {...},
            ),
        ),
    },
)

The client with identifier 07-tendermint-0 has been updated with the consensus state at height 1-273.