diff --git a/config/authz.ts b/config/authz.ts
index 309512f..63e3b94 100644
--- a/config/authz.ts
+++ b/config/authz.ts
@@ -1,4 +1,5 @@
 /* eslint-disable eslint-comments/disable-enable-pair */
+/* eslint-disable no-nested-ternary */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable camelcase */
 
@@ -8,6 +9,14 @@ import { SendAuthorization } from 'cosmjs-types/cosmos/bank/v1beta1/authz'
 import { Coin } from 'cosmjs-types/cosmos/base/v1beta1/coin'
 import type { AuthorizationType } from 'cosmjs-types/cosmos/staking/v1beta1/authz'
 import { StakeAuthorization, StakeAuthorization_Validators } from 'cosmjs-types/cosmos/staking/v1beta1/authz'
+import {
+  AcceptedMessageKeysFilter,
+  AllowAllMessagesFilter,
+  CombinedLimit,
+  ContractExecutionAuthorization,
+  MaxCallsLimit,
+  MaxFundsLimit,
+} from 'cosmjs-types/cosmwasm/wasm/v1/authz'
 import type { AuthorizationMode, GenericAuthorizationType, GrantAuthorizationType } from 'pages/authz/grant'
 
 export interface Msg {
@@ -82,6 +91,82 @@ export function AuthzSendGrantMsg(
   }
 }
 
+export function AuthzExecuteContractGrantMsg(
+  granter: string,
+  grantee: string,
+  contract: string,
+  expiration: number,
+  callsRemaining?: number,
+  amounts?: Coin[],
+  allowedMessages?: string[],
+): Msg {
+  const sendAuthValue = ContractExecutionAuthorization.encode(
+    ContractExecutionAuthorization.fromPartial({
+      grants: [
+        {
+          contract,
+          filter: {
+            typeUrl: allowedMessages
+              ? '/cosmwasm.wasm.v1.AcceptedMessageKeysFilter'
+              : '/cosmwasm.wasm.v1.AllowAllMessagesFilter',
+            value: allowedMessages
+              ? AcceptedMessageKeysFilter.encode({ keys: allowedMessages }).finish()
+              : AllowAllMessagesFilter.encode({}).finish(),
+          },
+          limit:
+            callsRemaining || amounts
+              ? {
+                  typeUrl:
+                    callsRemaining && amounts
+                      ? '/cosmwasm.wasm.v1.CombinedLimit'
+                      : callsRemaining
+                      ? '/cosmwasm.wasm.v1.MaxCallsLimit'
+                      : '/cosmwasm.wasm.v1.MaxFundsLimit',
+                  value:
+                    callsRemaining && amounts
+                      ? CombinedLimit.encode({
+                          callsRemaining: BigInt(callsRemaining),
+                          amounts,
+                        }).finish()
+                      : callsRemaining
+                      ? MaxCallsLimit.encode({
+                          remaining: BigInt(callsRemaining),
+                        }).finish()
+                      : MaxFundsLimit.encode({
+                          amounts: amounts || [],
+                        }).finish(),
+                }
+              : {
+                  // limit: undefined is not accepted
+                  typeUrl: '/cosmwasm.wasm.v1.MaxCallsLimit',
+                  value: MaxCallsLimit.encode({
+                    remaining: BigInt(100000),
+                  }).finish(),
+                },
+        },
+      ],
+    }),
+  ).finish()
+
+  const grantValue = MsgGrant.fromPartial({
+    grant: {
+      authorization: {
+        typeUrl: '/cosmwasm.wasm.v1.ContractExecutionAuthorization',
+        value: sendAuthValue,
+      },
+      // TODO: fix expiration issue
+      expiration: expiration ? { seconds: BigInt(expiration) } : undefined,
+    },
+    grantee,
+    granter,
+  })
+
+  return {
+    typeUrl: msgAuthzGrantTypeUrl,
+    value: grantValue,
+  }
+}
+
 export function AuthzGenericGrantMsg(granter: string, grantee: string, typeURL: string, expiration: number): Msg {
   return {
     typeUrl: msgAuthzGrantTypeUrl,
diff --git a/pages/authz/grant.tsx b/pages/authz/grant.tsx
index a93506f..6355a94 100644
--- a/pages/authz/grant.tsx
+++ b/pages/authz/grant.tsx
@@ -6,19 +6,19 @@
 /* eslint-disable tailwindcss/classnames-order */
 /* eslint-disable react/button-has-type */
 
-import { GasPrice, SigningStargateClient } from '@cosmjs/stargate'
+import { coins, GasPrice, SigningStargateClient } from '@cosmjs/stargate'
 import { Alert } from 'components/Alert'
 import { Conditional } from 'components/Conditional'
 import { ContractPageHeader } from 'components/ContractPageHeader'
 import { FormControl } from 'components/FormControl'
-import { NumberInput, TextInput } from 'components/forms/FormInput'
+import { AddressInput, NumberInput, TextInput } from 'components/forms/FormInput'
 import { useInputState, useNumberInputState } from 'components/forms/FormInput.hooks'
 import { InputDateTime } from 'components/InputDateTime'
 import { LinkTabs } from 'components/LinkTabs'
 import { authzLinkTabs } from 'components/LinkTabs.data'
 import { getConfig } from 'config'
 import type { Msg } from 'config/authz'
-import { AuthzGenericGrantMsg, AuthzSendGrantMsg } from 'config/authz'
+import { AuthzExecuteContractGrantMsg, AuthzGenericGrantMsg, AuthzSendGrantMsg } from 'config/authz'
 import { useGlobalSettings } from 'contexts/globalSettings'
 import type { NextPage } from 'next'
 import { NextSeo } from 'next-seo'
@@ -74,6 +74,22 @@ const Grant: NextPage = () => {
     subtitle: 'The spend limit',
   })
 
+  const maxFundsLimitDenomState = useInputState({
+    id: 'max-funds-limit-denom',
+    name: 'maxFundsLimitDenom',
+    title: 'Max Funds Limit Denom',
+    placeholder: `ustars`,
+    subtitle: 'The denom for max funds limit',
+  })
+
+  const maxFundsLimitState = useNumberInputState({
+    id: 'max-funds-limit',
+    name: 'maxFundsLimit',
+    title: 'Max Funds Limit',
+    placeholder: `1000000`,
+    subtitle: 'The max funds limit for contract execution (leave blank for no limit)',
+  })
+
   const allowListState = useInputState({
     id: 'allow-list',
     name: 'allowList',
@@ -82,6 +98,30 @@ const Grant: NextPage = () => {
     subtitle: 'Comma separated list of addresses to allow transactions to',
   })
 
+  const contractAddressState = useInputState({
+    id: 'contract-address',
+    name: 'contractAddress',
+    title: 'Contract Address',
+    placeholder: `stars1...`,
+    subtitle: 'The contract address to authorize execution on',
+  })
+
+  const allowedMessageKeysState = useInputState({
+    id: 'allowed-message-keys',
+    name: 'allowedMessageKeys',
+    title: 'Allowed Message Keys',
+    placeholder: `mint_to, burn, transfer`,
+    subtitle: 'Comma separated list of allowed message keys (leave blank to allow all)',
+  })
+
+  const callsRemainingState = useNumberInputState({
+    id: 'calls-remaining',
+    name: 'callsRemaining',
+    title: 'Calls Remaining',
+    placeholder: `10`,
+    subtitle: 'The allowed number of contract execution calls (leave blank for no limit)',
+  })
+
   const messageToSign = () => {
     if (authType === 'Generic') {
       if (genericAuthType === 'MsgSend') {
@@ -117,6 +157,16 @@ const Grant: NextPage = () => {
         (expiration?.getTime() as number) / 1000 || 0,
         allowListState.value ? allowListState.value.split(',').map((address) => address.trim()) : [],
       )
+    } else if (authType === 'Execute Smart Contract') {
+      return AuthzExecuteContractGrantMsg(
+        wallet.address || '',
+        granteeAddressState.value,
+        contractAddressState.value,
+        (expiration?.getTime() as number) / 1000 || 0,
+        callsRemainingState.value ? callsRemainingState.value : undefined,
+        maxFundsLimitState.value > 0 ? coins(maxFundsLimitState.value, maxFundsLimitDenomState.value) : undefined,
+        allowedMessageKeysState.value ? allowedMessageKeysState.value.split(',').map((key) => key.trim()) : undefined,
+      )
     }
   }
   const handleSendMessage = async () => {
@@ -156,9 +206,7 @@ const Grant: NextPage = () => {
         >
           <option value="Generic">Generic</option>
           <option value="Send">Send</option>
-          <option disabled value="Execute Smart Contract">
-            Execute Smart Contract
-          </option>
+          <option value="Execute Smart Contract">Execute Smart Contract</option>
           <option disabled value="Migrate Smart Contract">
             Migrate Smart Contract
           </option>
@@ -199,6 +247,15 @@ const Grant: NextPage = () => {
         <TextInput className="w-1/4" {...spendLimitDenomState} />
         {/* <TextInput className="w-2/5" {...allowListState} /> */}
       </Conditional>
+      <Conditional test={authType === 'Execute Smart Contract'}>
+        <AddressInput className="w-2/5" {...contractAddressState} />
+        <TextInput className="w-2/5" {...allowedMessageKeysState} />
+        <NumberInput className="w-2/5" {...callsRemainingState} />
+        <div className="flex flex-row">
+          <NumberInput className="w-2/5" {...maxFundsLimitState} />
+          <TextInput className="w-1/4 ml-2" {...maxFundsLimitDenomState} />
+        </div>
+      </Conditional>
       <Conditional test={authType === 'Generic'}>
         <FormControl
           className="w-1/4"