diff --git a/x/auth/spec/07_client.md b/x/auth/spec/07_client.md
index d7f2fbe3d..65aa7ec9a 100644
--- a/x/auth/spec/07_client.md
+++ b/x/auth/spec/07_client.md
@@ -4,6 +4,383 @@ order: 7
 
 # Client
 
+# Auth
+
+## CLI
+
+A user can query and interact with the `auth` module using the CLI.
+
+### Query
+
+The `query` commands allow users to query `auth` state.
+
+```bash
+simd query auth --help
+```
+
+#### account
+
+The `account` command allow users to query for an account by it's address.
+
+```bash
+simd query auth account [address] [flags]
+```
+
+Example:
+
+```bash
+simd query auth account cosmos1...
+```
+
+Example Output:
+
+```bash
+'@type': /cosmos.auth.v1beta1.BaseAccount
+account_number: "0"
+address: cosmos1zwg6tpl8aw4rawv8sgag9086lpw5hv33u5ctr2
+pub_key:
+  '@type': /cosmos.crypto.secp256k1.PubKey
+  key: ApDrE38zZdd7wLmFS9YmqO684y5DG6fjZ4rVeihF/AQD
+sequence: "1"
+```
+
+#### accounts
+
+The `accounts` command allow users to query all the available accounts.
+
+```bash
+simd query auth accounts [flags]
+```
+
+Example:
+
+```bash
+simd query auth accounts
+```
+
+Example Output:
+
+```bash
+accounts:
+- '@type': /cosmos.auth.v1beta1.BaseAccount
+  account_number: "0"
+  address: cosmos1zwg6tpl8aw4rawv8sgag9086lpw5hv33u5ctr2
+  pub_key:
+    '@type': /cosmos.crypto.secp256k1.PubKey
+    key: ApDrE38zZdd7wLmFS9YmqO684y5DG6fjZ4rVeihF/AQD
+  sequence: "1"
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "8"
+    address: cosmos1yl6hdjhmkf37639730gffanpzndzdpmhwlkfhr
+    pub_key: null
+    sequence: "0"
+  name: transfer
+  permissions:
+  - minter
+  - burner
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "4"
+    address: cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh
+    pub_key: null
+    sequence: "0"
+  name: bonded_tokens_pool
+  permissions:
+  - burner
+  - staking
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "5"
+    address: cosmos1tygms3xhhs3yv487phx3dw4a95jn7t7lpm470r
+    pub_key: null
+    sequence: "0"
+  name: not_bonded_tokens_pool
+  permissions:
+  - burner
+  - staking
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "6"
+    address: cosmos10d07y265gmmuvt4z0w9aw880jnsr700j6zn9kn
+    pub_key: null
+    sequence: "0"
+  name: gov
+  permissions:
+  - burner
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "3"
+    address: cosmos1jv65s3grqf6v6jl3dp4t6c9t9rk99cd88lyufl
+    pub_key: null
+    sequence: "0"
+  name: distribution
+  permissions: []
+- '@type': /cosmos.auth.v1beta1.BaseAccount
+  account_number: "1"
+  address: cosmos147k3r7v2tvwqhcmaxcfql7j8rmkrlsemxshd3j
+  pub_key: null
+  sequence: "0"
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "7"
+    address: cosmos1m3h30wlvsf8llruxtpukdvsy0km2kum8g38c8q
+    pub_key: null
+    sequence: "0"
+  name: mint
+  permissions:
+  - minter
+- '@type': /cosmos.auth.v1beta1.ModuleAccount
+  base_account:
+    account_number: "2"
+    address: cosmos17xpfvakm2amg962yls6f84z3kell8c5lserqta
+    pub_key: null
+    sequence: "0"
+  name: fee_collector
+  permissions: []
+pagination:
+  next_key: null
+  total: "0"
+```
+
+#### params
+
+The `params` command allow users to query the current auth parameters.
+
+```bash
+simd query auth params [flags]
+```
+
+Example:
+
+```bash
+simd query auth params
+```
+
+Example Output:
+
+```bash
+max_memo_characters: "256"
+sig_verify_cost_ed25519: "590"
+sig_verify_cost_secp256k1: "1000"
+tx_sig_limit: "7"
+tx_size_cost_per_byte: "10"
+```
+
+## gRPC
+
+A user can query the `auth` module using gRPC endpoints.
+
+### Account
+
+The `account` endpoint allow users to query for an account by it's address.
+
+```bash
+cosmos.auth.v1beta1.Query/Account
+```
+
+Example:
+
+```bash
+grpcurl -plaintext \
+    -d '{"address":"cosmos1.."}' \
+    localhost:9090 \
+    cosmos.auth.v1beta1.Query/Account
+```
+
+Example Output:
+
+```bash
+{
+  "account":{
+    "@type":"/cosmos.auth.v1beta1.BaseAccount",
+    "address":"cosmos1zwg6tpl8aw4rawv8sgag9086lpw5hv33u5ctr2",
+    "pubKey":{
+      "@type":"/cosmos.crypto.secp256k1.PubKey",
+      "key":"ApDrE38zZdd7wLmFS9YmqO684y5DG6fjZ4rVeihF/AQD"
+    },
+    "sequence":"1"
+  }
+}
+```
+
+### Accounts
+
+The `accounts` endpoint allow users to query all the available accounts.
+
+```bash
+cosmos.auth.v1beta1.Query/Accounts
+```
+
+Example:
+
+```bash
+grpcurl -plaintext \
+    localhost:9090 \
+    cosmos.auth.v1beta1.Query/Accounts
+```
+
+Example Output:
+
+```bash
+{
+   "accounts":[
+      {
+         "@type":"/cosmos.auth.v1beta1.BaseAccount",
+         "address":"cosmos1zwg6tpl8aw4rawv8sgag9086lpw5hv33u5ctr2",
+         "pubKey":{
+            "@type":"/cosmos.crypto.secp256k1.PubKey",
+            "key":"ApDrE38zZdd7wLmFS9YmqO684y5DG6fjZ4rVeihF/AQD"
+         },
+         "sequence":"1"
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos1yl6hdjhmkf37639730gffanpzndzdpmhwlkfhr",
+            "accountNumber":"8"
+         },
+         "name":"transfer",
+         "permissions":[
+            "minter",
+            "burner"
+         ]
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos1fl48vsnmsdzcv85q5d2q4z5ajdha8yu34mf0eh",
+            "accountNumber":"4"
+         },
+         "name":"bonded_tokens_pool",
+         "permissions":[
+            "burner",
+            "staking"
+         ]
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos1tygms3xhhs3yv487phx3dw4a95jn7t7lpm470r",
+            "accountNumber":"5"
+         },
+         "name":"not_bonded_tokens_pool",
+         "permissions":[
+            "burner",
+            "staking"
+         ]
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos10d07y265gmmuvt4z0w9aw880jnsr700j6zn9kn",
+            "accountNumber":"6"
+         },
+         "name":"gov",
+         "permissions":[
+            "burner"
+         ]
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos1jv65s3grqf6v6jl3dp4t6c9t9rk99cd88lyufl",
+            "accountNumber":"3"
+         },
+         "name":"distribution"
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.BaseAccount",
+         "accountNumber":"1",
+         "address":"cosmos147k3r7v2tvwqhcmaxcfql7j8rmkrlsemxshd3j"
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos1m3h30wlvsf8llruxtpukdvsy0km2kum8g38c8q",
+            "accountNumber":"7"
+         },
+         "name":"mint",
+         "permissions":[
+            "minter"
+         ]
+      },
+      {
+         "@type":"/cosmos.auth.v1beta1.ModuleAccount",
+         "baseAccount":{
+            "address":"cosmos17xpfvakm2amg962yls6f84z3kell8c5lserqta",
+            "accountNumber":"2"
+         },
+         "name":"fee_collector"
+      }
+   ],
+   "pagination":{
+      "total":"9"
+   }
+}
+```
+
+
+### Params
+
+The `params` endpoint allow users to query the current auth parameters.
+
+```bash
+cosmos.auth.v1beta1.Query/Params
+```
+
+Example:
+
+```bash
+grpcurl -plaintext \
+    localhost:9090 \
+    cosmos.auth.v1beta1.Query/Params
+```
+
+Example Output:
+
+```bash
+{
+  "params": {
+    "maxMemoCharacters": "256",
+    "txSigLimit": "7",
+    "txSizeCostPerByte": "10",
+    "sigVerifyCostEd25519": "590",
+    "sigVerifyCostSecp256k1": "1000"
+  }
+}
+```
+
+## REST
+
+A user can query the `auth` module using REST endpoints.
+
+### Account
+
+The `account` endpoint allow users to query for an account by it's address.
+
+```bash
+/cosmos/auth/v1beta1/account?address={address}
+```
+
+### Accounts
+
+The `accounts` endpoint allow users to query all the available accounts.
+
+```bash
+/cosmos/auth/v1beta1/accounts
+```
+
+### Params
+
+The `params` endpoint allow users to query the current auth parameters.
+
+```bash
+/cosmos/auth/v1beta1/params
+```
+
+# Vesting
+
 ## CLI
 
 A user can query and interact with the `vesting` module using the CLI.
diff --git a/x/auth/spec/README.md b/x/auth/spec/README.md
index 99ebabb0c..1faca6e27 100644
--- a/x/auth/spec/README.md
+++ b/x/auth/spec/README.md
@@ -38,4 +38,9 @@ This module is used in the Cosmos Hub.
    - [Glossary](05_vesting.md#glossary)
 6. **[Parameters](06_params.md)**
 7. **[Client](07_client.md)**
-   - [CLI](07_client.md#cli)
+   - **[Auth](07_client.md#auth)**
+      - [CLI](07_client.md#cli)
+      - [gRPC](07_client.md#grpc)
+      - [REST](07_client.md#rest)
+   - **[Vesting](07_client.md#vesting)**
+      - [CLI](07_client.md#vesting#cli)