Table of Contents

Query Channels

Use the query channels command to query the identifiers of all channels on a given chain.

DESCRIPTION:
Query the identifiers of all channels on a given chain

USAGE:
    hermes query channels [OPTIONS] --chain <CHAIN_ID>

OPTIONS:
        --counterparty-chain <COUNTERPARTY_CHAIN_ID>
            Filter the query response by the this counterparty chain

    -h, --help
            Print help information

        --show-counterparty
            Show the counterparty chain, port, and channel

        --verbose
            Enable verbose output, displaying the client and connection ids for each channel in the
            response

REQUIRED:
        --chain <CHAIN_ID>    Identifier of the chain to query

Example

Query all channels on ibc-1:

hermes query channels --chain ibc-1
Success: [
    PortChannelId {
        channel_id: ChannelId(
            "channel-0",
        ),
        port_id: PortId(
            "transfer",
        ),
    },
    PortChannelId {
        channel_id: ChannelId(
            "channel-1",
        ),
        port_id: PortId(
            "transfer",
        ),
    },
]

Query Channel Data

Use the query channel commands to query the information about a specific channel.

DESCRIPTION:
Query information about channels

USAGE:
    hermes query channel <SUBCOMMAND>

OPTIONS:
    -h, --help    Print help information

SUBCOMMANDS:
    client    Query channel's client state
    end       Query channel end
    ends      Query channel ends and underlying connection and client objects
    help      Print this message or the help of the given subcommand(s)

Query the channel end data

Use the query channel end command to query the channel end:

DESCRIPTION:
Query channel end

USAGE:
    hermes query channel end [OPTIONS] --chain <CHAIN_ID> --port <PORT_ID> --channel <CHANNEL_ID>

OPTIONS:
    -h, --help               Print help information
        --height <HEIGHT>    Height of the state to query

REQUIRED:
        --chain <CHAIN_ID>        Identifier of the chain to query
        --channel <CHANNEL_ID>    Identifier of the channel to query [aliases: chan]
        --port <PORT_ID>          Identifier of the port to query

Example

Query the channel end of channel channel-1 on port transfer on ibc-1:

hermes query channel end --chain ibc-1 --port transfer --channel channel-1
Success: ChannelEnd {
    state: Open,
    ordering: Unordered,
    remote: Counterparty {
        port_id: PortId(
            "transfer",
        ),
        channel_id: Some(
            ChannelId(
                "channel-0",
            ),
        ),
    },
    connection_hops: [
        ConnectionId(
            "connection-1",
        ),
    ],
    version: "ics20-1",
}

Query the channel data for both ends of a channel

Use the query channel ends command to obtain both ends of a channel:

DESCRIPTION:
Query channel ends and underlying connection and client objects

USAGE:
    hermes query channel ends [OPTIONS] --chain <CHAIN_ID> --port <PORT_ID> --channel <CHANNEL_ID>

OPTIONS:
    -h, --help               Print help information
        --height <HEIGHT>    Height of the state to query
        --verbose            Enable verbose output, displaying all details of channels, connections
                             & clients

REQUIRED:
        --chain <CHAIN_ID>        Identifier of the chain to query
        --channel <CHANNEL_ID>    Identifier of the channel to query [aliases: chan]
        --port <PORT_ID>          Identifier of the port to query

Example

Query the channel end of channel channel-1 on port transfer on ibc-0:

hermes query channel ends --chain ibc-0 --port transfer --channel channel-1
Success: ChannelEndsSummary {
    chain_id: ChainId {
        id: "ibc-0",
        version: 0,
    },
    client_id: ClientId(
        "07-tendermint-1",
    ),
    connection_id: ConnectionId(
        "connection-1",
    ),
    channel_id: ChannelId(
        "channel-1",
    ),
    port_id: PortId(
        "transfer",
    ),
    counterparty_chain_id: ChainId {
        id: "ibc-2",
        version: 2,
    },
    counterparty_client_id: ClientId(
        "07-tendermint-1",
    ),
    counterparty_connection_id: ConnectionId(
        "connection-1",
    ),
    counterparty_channel_id: ChannelId(
        "channel-1",
    ),
    counterparty_port_id: PortId(
        "transfer",
    ),
}

Passing the --verbose flag will additionally print all the details of the channel, connection, and client on both ends.

Query the channel client state

Use the query channel client command to obtain the channel's client state:

DESCRIPTION:
Query channel's client state

USAGE:
    hermes query channel client --chain <CHAIN_ID> --port <PORT_ID> --channel <CHANNEL_ID>

OPTIONS:
    -h, --help    Print help information

REQUIRED:
        --chain <CHAIN_ID>        Identifier of the chain to query
        --channel <CHANNEL_ID>    Identifier of the channel to query [aliases: chan]
        --port <PORT_ID>          Identifier of the port to query

If the command is successful a message with the following format will be displayed:

Success: Some(
    IdentifiedAnyClientState {
        client_id: ClientId(
            "07-tendermint-0",
        ),
        client_state: Tendermint(
            ClientState {
                chain_id: ChainId {
                    id: "network2",
                    version: 0,
                },
                trust_threshold: TrustThreshold {
                    numerator: 1,
                    denominator: 3,
                },
                trusting_period: 1209600s,
                unbonding_period: 1814400s,
                max_clock_drift: 40s,
                latest_height: Height {
                    revision: 0,
                    height: 2775,
                },
                proof_specs: ProofSpecs(
                    [
                        ProofSpec(
                            ProofSpec {
                                leaf_spec: Some(
                                    LeafOp {
                                        hash: Sha256,
                                        prehash_key: NoHash,
                                        prehash_value: Sha256,
                                        length: VarProto,
                                        prefix: [
                                            0,
                                        ],
                                    },
                                ),
                                inner_spec: Some(
                                    InnerSpec {
                                        child_order: [
                                            0,
                                            1,
                                        ],
                                        child_size: 33,
                                        min_prefix_length: 4,
                                        max_prefix_length: 12,
                                        empty_child: [],
                                        hash: Sha256,
                                    },
                                ),
                                max_depth: 0,
                                min_depth: 0,
                            },
                        ),
                        ProofSpec(
                            ProofSpec {
                                leaf_spec: Some(
                                    LeafOp {
                                        hash: Sha256,
                                        prehash_key: NoHash,
                                        prehash_value: Sha256,
                                        length: VarProto,
                                        prefix: [
                                            0,
                                        ],
                                    },
                                ),
                                inner_spec: Some(
                                    InnerSpec {
                                        child_order: [
                                            0,
                                            1,
                                        ],
                                        child_size: 32,
                                        min_prefix_length: 1,
                                        max_prefix_length: 1,
                                        empty_child: [],
                                        hash: Sha256,
                                    },
                                ),
                                max_depth: 0,
                                min_depth: 0,
                            },
                        ),
                    ],
                ),
                upgrade_path: [
                    "upgrade",
                    "upgradedIBCState",
                ],
                allow_update: AllowUpdate {
                    after_expiry: true,
                    after_misbehaviour: true,
                },
                frozen_height: None,
            },
        ),
    },
)

JSON output:

hermes  --json query channel client --chain <CHAIN_ID> --port <PORT_ID> --channel <CHANNEL_ID>

If the command is successful a message with the following format will be displayed:

{
    "result":
    {
        "client_id":"07-tendermint-0",
        "client_state":
        {
            "allow_update":
            {
                "after_expiry":true,
                "after_misbehaviour":true
            },
            "chain_id":"network2",
            "frozen_height":null,
            "latest_height":
            {
                "revision_height":2775,
                "revision_number":0
            },
            "max_clock_drift":
            {
                "nanos":0,
                "secs":40
            },
            "proof_specs":
            [
                {
                    "inner_spec":
                    {
                        "child_order":[0,1],
                        "child_size":33,
                        "empty_child":"",
                        "hash":1,
                        "max_prefix_length":12,
                        "min_prefix_length":4
                    },
                    "leaf_spec":
                    {
                        "hash":1,
                        "length":1,
                        "prefix":"AA==",
                        "prehash_key":0,
                        "prehash_value":1
                    },
                    "max_depth":0,
                    "min_depth":0
                },
                {
                    "inner_spec":
                    {
                        "child_order":[0,1],
                        "child_size":32,
                        "empty_child":"",
                        "hash":1,
                        "max_prefix_length":1,
                        "min_prefix_length":1
                    },
                    "leaf_spec":
                    {
                        "hash":1,
                        "length":1,
                        "prefix":"AA==",
                        "prehash_key":0,
                        "prehash_value":1
                    },
                    "max_depth":0,
                    "min_depth":0
                }
            ],
            "trust_threshold":
            {
                "denominator":3,
                "numerator":1
            },
            "trusting_period":
            {
                "nanos":0,
                "secs":1209600
            },
            "type":"Tendermint",
            "unbonding_period":
            {
                "nanos":0,
                "secs":1814400
            },
            "upgrade_path":["upgrade","upgradedIBCState"]
        },
        "type":"IdentifiedAnyClientState"
    },
    "status":"success"
}