The authz module is responsible for the authorization for accounts to perform actions on behalf of other accounts and enables a granter to grant authorizations to a grantee that allows the grantee to execute messages on behalf of the granter. Authorizations must be granted for a particular Msg service method one by one using an implementation of the Authorization interface.

For more information, visit https://docs.cosmos.network/main/modules/authz/

​
Message Types

Msg defines the authz Msg service.

tx.proto
service Msg {
  // Grant grants the provided authorization to the grantee on the granter's
  // account with the provided expiration time. If there is already a grant
  // for the given (granter, grantee, Authorization) triple, then the grant
  // will be overwritten.
  rpc Grant(MsgGrant) returns (MsgGrantResponse);

  // Exec attempts to execute the provided messages using
  // authorizations granted to the grantee. Each message should have only
  // one signer corresponding to the granter of the authorization.
  rpc Exec(MsgExec) returns (MsgExecResponse);

  // Revoke revokes any authorization corresponding to the provided method name on the
  // granter's account that has been granted to the grantee.
  rpc Revoke(MsgRevoke) returns (MsgRevokeResponse);
}

​
MsgGrant

MsgGrant is a request type for Grant method. It declares authorization to the grantee on behalf of the granter with the provided expiration time.

tx.proto
message MsgGrant {
  option (cosmos.msg.v1.signer) = "granter";

  string granter = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  string grantee = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];

  cosmos.authz.v1beta1.Grant grant = 3 [(gogoproto.nullable) = false];
}

​
MsgGrantResponse

MsgGrantResponse defines the Msg/MsgGrant response type.

tx.proto
message MsgGrantResponse {}

​
MsgExec

MsgExec attempts to execute the provided messages using authorizations granted to the grantee. Each message should have only one signer corresponding to the granter of the authorization.

tx.proto
message MsgExec {
  option (cosmos.msg.v1.signer) = "grantee";

  string grantee = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  // Authorization Msg requests to execute. Each msg must implement Authorization interface
  // The x/authz will try to find a grant matching (msg.signers[0], grantee, MsgTypeURL(msg))
  // triple and validate it.
  repeated google.protobuf.Any msgs = 2 [(cosmos_proto.accepts_interface) = "sdk.Msg, authz.Authorization"];
}

​
MsgExecResponse

MsgExecResponse defines the Msg/MsgExecResponse response type.

tx.proto
message MsgExecResponse {
  repeated bytes results = 1;
}

​
MsgRevoke

MsgRevoke revokes any authorization with the provided sdk.Msg type on the granter’s account with that has been granted to the grantee.

tx.proto
message MsgRevoke {
  option (cosmos.msg.v1.signer) = "granter";

  string granter      = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  string grantee      = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  string msg_type_url = 3;
}

​
MsgRevokeResponse

MsgRevokeResponse defines the Msg/MsgRevokeResponse response type.

tx.proto
message MsgRevokeResponse {}

​
Queries

Query defines the gRPC querier service.

query.proto
service Query {
  // Returns list of `Authorization`, granted to the grantee by the granter.
  rpc Grants(QueryGrantsRequest) returns (QueryGrantsResponse) {
    option (google.api.http).get = "/cosmos/authz/v1beta1/grants";
  }

  // GranterGrants returns list of `GrantAuthorization`, granted by granter.
  //
  // Since: cosmos-sdk 0.46
  rpc GranterGrants(QueryGranterGrantsRequest) returns (QueryGranterGrantsResponse) {
    option (google.api.http).get = "/cosmos/authz/v1beta1/grants/granter/{granter}";
  }

  // GranteeGrants returns a list of `GrantAuthorization` by grantee.
  //
  // Since: cosmos-sdk 0.46
  rpc GranteeGrants(QueryGranteeGrantsRequest) returns (QueryGranteeGrantsResponse) {
    option (google.api.http).get = "/cosmos/authz/v1beta1/grants/grantee/{grantee}";
  }
}

​
QueryGrantsRequest

QueryGrantsRequest is the request type for the Query/Grants RPC method.

query.proto
message QueryGrantsRequest {
  string granter = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  string grantee = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];
  // Optional, msg_type_url, when set, will query only grants matching given msg type.
  string msg_type_url = 3;
  // pagination defines an pagination for the request.
  cosmos.base.query.v1beta1.PageRequest pagination = 4;
}

​
QueryGrantsResponse

QueryGrantsResponse is the response type for the Query/Authorizations RPC method.

query.proto
message QueryGrantsResponse {
  // authorizations is a list of grants granted for grantee by granter.
  repeated Grant grants = 1;
  // pagination defines an pagination for the response.
  cosmos.base.query.v1beta1.PageResponse pagination = 2;
}

​
QueryGranterGrantsRequest

QueryGranterGrantsRequest is the request type for the Query/GranterGrants RPC method.

query.proto
message QueryGranterGrantsRequest {
  string granter = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];

  // pagination defines an pagination for the request.
  cosmos.base.query.v1beta1.PageRequest pagination = 2;
}

​
QueryGranterGrantsResponse

QueryGranterGrantsResponse is the response type for the Query/GranterGrants RPC method.

query.proto
message QueryGranterGrantsResponse {
  // grants is a list of grants granted by the granter.
  repeated GrantAuthorization grants = 1;
  // pagination defines an pagination for the response.
  cosmos.base.query.v1beta1.PageResponse pagination = 2;
}

​
QueryGranteeGrantsRequest

QueryGranteeGrantsRequest is the request type for the Query/IssuedGrants RPC method.

query.proto
message QueryGranteeGrantsRequest {
  string grantee = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];

  // pagination defines an pagination for the request.
  cosmos.base.query.v1beta1.PageRequest pagination = 2;
}

​
QueryGranteeGrantsResponse

QueryGranteeGrantsResponse is the response type for the Query/GranteeGrants RPC method.

query.proto
message QueryGranteeGrantsResponse {
  // grants is a list of grants granted to the grantee.
  repeated GrantAuthorization grants = 1;
  // pagination defines an pagination for the response.
  cosmos.base.query.v1beta1.PageResponse pagination = 2;
}

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