# Protocol Documentation
## Table of Contents
- [api/v2/activity_service.proto](#api_v2_activity_service-proto)
- [Activity](#memos-api-v2-Activity)
- [ActivityMemoCommentPayload](#memos-api-v2-ActivityMemoCommentPayload)
- [ActivityPayload](#memos-api-v2-ActivityPayload)
- [GetActivityRequest](#memos-api-v2-GetActivityRequest)
- [GetActivityResponse](#memos-api-v2-GetActivityResponse)
- [ActivityService](#memos-api-v2-ActivityService)
- [api/v2/common.proto](#api_v2_common-proto)
- [RowStatus](#memos-api-v2-RowStatus)
- [api/v2/inbox_service.proto](#api_v2_inbox_service-proto)
- [DeleteInboxRequest](#memos-api-v2-DeleteInboxRequest)
- [DeleteInboxResponse](#memos-api-v2-DeleteInboxResponse)
- [Inbox](#memos-api-v2-Inbox)
- [ListInboxesRequest](#memos-api-v2-ListInboxesRequest)
- [ListInboxesResponse](#memos-api-v2-ListInboxesResponse)
- [UpdateInboxRequest](#memos-api-v2-UpdateInboxRequest)
- [UpdateInboxResponse](#memos-api-v2-UpdateInboxResponse)
- [Inbox.Status](#memos-api-v2-Inbox-Status)
- [Inbox.Type](#memos-api-v2-Inbox-Type)
- [InboxService](#memos-api-v2-InboxService)
- [api/v2/memo_service.proto](#api_v2_memo_service-proto)
- [CreateMemoCommentRequest](#memos-api-v2-CreateMemoCommentRequest)
- [CreateMemoCommentResponse](#memos-api-v2-CreateMemoCommentResponse)
- [CreateMemoRequest](#memos-api-v2-CreateMemoRequest)
- [CreateMemoResponse](#memos-api-v2-CreateMemoResponse)
- [GetMemoRequest](#memos-api-v2-GetMemoRequest)
- [GetMemoResponse](#memos-api-v2-GetMemoResponse)
- [ListMemoCommentsRequest](#memos-api-v2-ListMemoCommentsRequest)
- [ListMemoCommentsResponse](#memos-api-v2-ListMemoCommentsResponse)
- [ListMemosRequest](#memos-api-v2-ListMemosRequest)
- [ListMemosResponse](#memos-api-v2-ListMemosResponse)
- [Memo](#memos-api-v2-Memo)
- [Visibility](#memos-api-v2-Visibility)
- [MemoService](#memos-api-v2-MemoService)
- [api/v2/resource_service.proto](#api_v2_resource_service-proto)
- [CreateResourceRequest](#memos-api-v2-CreateResourceRequest)
- [CreateResourceResponse](#memos-api-v2-CreateResourceResponse)
- [DeleteResourceRequest](#memos-api-v2-DeleteResourceRequest)
- [DeleteResourceResponse](#memos-api-v2-DeleteResourceResponse)
- [ListResourcesRequest](#memos-api-v2-ListResourcesRequest)
- [ListResourcesResponse](#memos-api-v2-ListResourcesResponse)
- [Resource](#memos-api-v2-Resource)
- [UpdateResourceRequest](#memos-api-v2-UpdateResourceRequest)
- [UpdateResourceResponse](#memos-api-v2-UpdateResourceResponse)
- [ResourceService](#memos-api-v2-ResourceService)
- [api/v2/system_service.proto](#api_v2_system_service-proto)
- [GetSystemInfoRequest](#memos-api-v2-GetSystemInfoRequest)
- [GetSystemInfoResponse](#memos-api-v2-GetSystemInfoResponse)
- [SystemInfo](#memos-api-v2-SystemInfo)
- [UpdateSystemInfoRequest](#memos-api-v2-UpdateSystemInfoRequest)
- [UpdateSystemInfoResponse](#memos-api-v2-UpdateSystemInfoResponse)
- [SystemService](#memos-api-v2-SystemService)
- [api/v2/tag_service.proto](#api_v2_tag_service-proto)
- [DeleteTagRequest](#memos-api-v2-DeleteTagRequest)
- [DeleteTagResponse](#memos-api-v2-DeleteTagResponse)
- [ListTagsRequest](#memos-api-v2-ListTagsRequest)
- [ListTagsResponse](#memos-api-v2-ListTagsResponse)
- [Tag](#memos-api-v2-Tag)
- [UpsertTagRequest](#memos-api-v2-UpsertTagRequest)
- [UpsertTagResponse](#memos-api-v2-UpsertTagResponse)
- [TagService](#memos-api-v2-TagService)
- [api/v2/user_service.proto](#api_v2_user_service-proto)
- [CreateUserAccessTokenRequest](#memos-api-v2-CreateUserAccessTokenRequest)
- [CreateUserAccessTokenResponse](#memos-api-v2-CreateUserAccessTokenResponse)
- [CreateUserRequest](#memos-api-v2-CreateUserRequest)
- [CreateUserResponse](#memos-api-v2-CreateUserResponse)
- [DeleteUserAccessTokenRequest](#memos-api-v2-DeleteUserAccessTokenRequest)
- [DeleteUserAccessTokenResponse](#memos-api-v2-DeleteUserAccessTokenResponse)
- [GetUserRequest](#memos-api-v2-GetUserRequest)
- [GetUserResponse](#memos-api-v2-GetUserResponse)
- [ListUserAccessTokensRequest](#memos-api-v2-ListUserAccessTokensRequest)
- [ListUserAccessTokensResponse](#memos-api-v2-ListUserAccessTokensResponse)
- [UpdateUserRequest](#memos-api-v2-UpdateUserRequest)
- [UpdateUserResponse](#memos-api-v2-UpdateUserResponse)
- [User](#memos-api-v2-User)
- [UserAccessToken](#memos-api-v2-UserAccessToken)
- [User.Role](#memos-api-v2-User-Role)
- [UserService](#memos-api-v2-UserService)
- [Scalar Value Types](#scalar-value-types)
Top
## api/v2/activity_service.proto
### Activity
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
| creator_id | [int32](#int32) | | |
| type | [string](#string) | | |
| level | [string](#string) | | |
| create_time | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
| payload | [ActivityPayload](#memos-api-v2-ActivityPayload) | | |
### ActivityMemoCommentPayload
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memo_id | [int32](#int32) | | |
| related_memo_id | [int32](#int32) | | |
### ActivityPayload
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memo_comment | [ActivityMemoCommentPayload](#memos-api-v2-ActivityMemoCommentPayload) | | |
### GetActivityRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
### GetActivityResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| activity | [Activity](#memos-api-v2-Activity) | | |
### ActivityService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| GetActivity | [GetActivityRequest](#memos-api-v2-GetActivityRequest) | [GetActivityResponse](#memos-api-v2-GetActivityResponse) | |
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## api/v2/common.proto
### RowStatus
| Name | Number | Description |
| ---- | ------ | ----------- |
| ROW_STATUS_UNSPECIFIED | 0 | |
| ACTIVE | 1 | |
| ARCHIVED | 2 | |
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## api/v2/inbox_service.proto
### DeleteInboxRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | The name of the inbox to delete. Format: inboxes/{inbox} |
### DeleteInboxResponse
### Inbox
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | The name of the inbox. Format: inboxes/{id} |
| sender | [string](#string) | | Format: users/{username} |
| receiver | [string](#string) | | Format: users/{username} |
| status | [Inbox.Status](#memos-api-v2-Inbox-Status) | | |
| create_time | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
| type | [Inbox.Type](#memos-api-v2-Inbox-Type) | | |
| activity_id | [int32](#int32) | optional | |
### ListInboxesRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [string](#string) | | Format: users/{username} |
### ListInboxesResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| inboxes | [Inbox](#memos-api-v2-Inbox) | repeated | |
### UpdateInboxRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| inbox | [Inbox](#memos-api-v2-Inbox) | | |
| update_mask | [google.protobuf.FieldMask](#google-protobuf-FieldMask) | | |
### UpdateInboxResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| inbox | [Inbox](#memos-api-v2-Inbox) | | |
### Inbox.Status
| Name | Number | Description |
| ---- | ------ | ----------- |
| STATUS_UNSPECIFIED | 0 | |
| UNREAD | 1 | |
| ARCHIVED | 2 | |
### Inbox.Type
| Name | Number | Description |
| ---- | ------ | ----------- |
| TYPE_UNSPECIFIED | 0 | |
| TYPE_MEMO_COMMENT | 1 | |
### InboxService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| ListInboxes | [ListInboxesRequest](#memos-api-v2-ListInboxesRequest) | [ListInboxesResponse](#memos-api-v2-ListInboxesResponse) | |
| UpdateInbox | [UpdateInboxRequest](#memos-api-v2-UpdateInboxRequest) | [UpdateInboxResponse](#memos-api-v2-UpdateInboxResponse) | |
| DeleteInbox | [DeleteInboxRequest](#memos-api-v2-DeleteInboxRequest) | [DeleteInboxResponse](#memos-api-v2-DeleteInboxResponse) | |
Top
## api/v2/memo_service.proto
### CreateMemoCommentRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | id is the memo id to create comment for. |
| create | [CreateMemoRequest](#memos-api-v2-CreateMemoRequest) | | |
### CreateMemoCommentResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memo | [Memo](#memos-api-v2-Memo) | | |
### CreateMemoRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| content | [string](#string) | | |
| visibility | [Visibility](#memos-api-v2-Visibility) | | |
### CreateMemoResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memo | [Memo](#memos-api-v2-Memo) | | |
### GetMemoRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
### GetMemoResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memo | [Memo](#memos-api-v2-Memo) | | |
### ListMemoCommentsRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
### ListMemoCommentsResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memos | [Memo](#memos-api-v2-Memo) | repeated | |
### ListMemosRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| page | [int32](#int32) | | |
| page_size | [int32](#int32) | | |
| filter | [string](#string) | | Filter is used to filter memos returned in the list. |
| creator_id | [int32](#int32) | optional | |
### ListMemosResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| memos | [Memo](#memos-api-v2-Memo) | repeated | |
### Memo
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
| row_status | [RowStatus](#memos-api-v2-RowStatus) | | |
| creator_id | [int32](#int32) | | |
| created_ts | [int64](#int64) | | |
| updated_ts | [int64](#int64) | | |
| content | [string](#string) | | |
| visibility | [Visibility](#memos-api-v2-Visibility) | | |
| pinned | [bool](#bool) | | |
### Visibility
| Name | Number | Description |
| ---- | ------ | ----------- |
| VISIBILITY_UNSPECIFIED | 0 | |
| PRIVATE | 1 | |
| PROTECTED | 2 | |
| PUBLIC | 3 | |
### MemoService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| CreateMemo | [CreateMemoRequest](#memos-api-v2-CreateMemoRequest) | [CreateMemoResponse](#memos-api-v2-CreateMemoResponse) | |
| ListMemos | [ListMemosRequest](#memos-api-v2-ListMemosRequest) | [ListMemosResponse](#memos-api-v2-ListMemosResponse) | |
| GetMemo | [GetMemoRequest](#memos-api-v2-GetMemoRequest) | [GetMemoResponse](#memos-api-v2-GetMemoResponse) | |
| CreateMemoComment | [CreateMemoCommentRequest](#memos-api-v2-CreateMemoCommentRequest) | [CreateMemoCommentResponse](#memos-api-v2-CreateMemoCommentResponse) | |
| ListMemoComments | [ListMemoCommentsRequest](#memos-api-v2-ListMemoCommentsRequest) | [ListMemoCommentsResponse](#memos-api-v2-ListMemoCommentsResponse) | |
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## api/v2/resource_service.proto
### CreateResourceRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| filename | [string](#string) | | |
| external_link | [string](#string) | | |
| type | [string](#string) | | |
| memo_id | [int32](#int32) | optional | |
### CreateResourceResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| resource | [Resource](#memos-api-v2-Resource) | | |
### DeleteResourceRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
### DeleteResourceResponse
### ListResourcesRequest
### ListResourcesResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| resources | [Resource](#memos-api-v2-Resource) | repeated | |
### Resource
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
| created_ts | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
| filename | [string](#string) | | |
| external_link | [string](#string) | | |
| type | [string](#string) | | |
| size | [int64](#int64) | | |
| memo_id | [int32](#int32) | optional | |
### UpdateResourceRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| resource | [Resource](#memos-api-v2-Resource) | | |
| update_mask | [google.protobuf.FieldMask](#google-protobuf-FieldMask) | | |
### UpdateResourceResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| resource | [Resource](#memos-api-v2-Resource) | | |
### ResourceService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| CreateResource | [CreateResourceRequest](#memos-api-v2-CreateResourceRequest) | [CreateResourceResponse](#memos-api-v2-CreateResourceResponse) | |
| ListResources | [ListResourcesRequest](#memos-api-v2-ListResourcesRequest) | [ListResourcesResponse](#memos-api-v2-ListResourcesResponse) | |
| UpdateResource | [UpdateResourceRequest](#memos-api-v2-UpdateResourceRequest) | [UpdateResourceResponse](#memos-api-v2-UpdateResourceResponse) | |
| DeleteResource | [DeleteResourceRequest](#memos-api-v2-DeleteResourceRequest) | [DeleteResourceResponse](#memos-api-v2-DeleteResourceResponse) | |
Top
## api/v2/system_service.proto
### GetSystemInfoRequest
### GetSystemInfoResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| system_info | [SystemInfo](#memos-api-v2-SystemInfo) | | |
### SystemInfo
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| version | [string](#string) | | |
| mode | [string](#string) | | |
| allow_registration | [bool](#bool) | | |
| disable_password_login | [bool](#bool) | | |
| additional_script | [string](#string) | | |
| additional_style | [string](#string) | | |
| db_size | [int64](#int64) | | |
### UpdateSystemInfoRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| system_info | [SystemInfo](#memos-api-v2-SystemInfo) | | System info is the updated data. |
| update_mask | [google.protobuf.FieldMask](#google-protobuf-FieldMask) | | |
### UpdateSystemInfoResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| system_info | [SystemInfo](#memos-api-v2-SystemInfo) | | |
### SystemService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| GetSystemInfo | [GetSystemInfoRequest](#memos-api-v2-GetSystemInfoRequest) | [GetSystemInfoResponse](#memos-api-v2-GetSystemInfoResponse) | |
| UpdateSystemInfo | [UpdateSystemInfoRequest](#memos-api-v2-UpdateSystemInfoRequest) | [UpdateSystemInfoResponse](#memos-api-v2-UpdateSystemInfoResponse) | |
Top
## api/v2/tag_service.proto
### DeleteTagRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| tag | [Tag](#memos-api-v2-Tag) | | |
### DeleteTagResponse
### ListTagsRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| creator_id | [int32](#int32) | | |
### ListTagsResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| tags | [Tag](#memos-api-v2-Tag) | repeated | |
### Tag
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | |
| creator_id | [int32](#int32) | | |
### UpsertTagRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| name | [string](#string) | | |
### UpsertTagResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| tag | [Tag](#memos-api-v2-Tag) | | |
### TagService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| UpsertTag | [UpsertTagRequest](#memos-api-v2-UpsertTagRequest) | [UpsertTagResponse](#memos-api-v2-UpsertTagResponse) | |
| ListTags | [ListTagsRequest](#memos-api-v2-ListTagsRequest) | [ListTagsResponse](#memos-api-v2-ListTagsResponse) | |
| DeleteTag | [DeleteTagRequest](#memos-api-v2-DeleteTagRequest) | [DeleteTagResponse](#memos-api-v2-DeleteTagResponse) | |
Top
## api/v2/user_service.proto
### CreateUserAccessTokenRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| username | [string](#string) | | |
| description | [string](#string) | | |
| expires_at | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | optional | |
### CreateUserAccessTokenResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| access_token | [UserAccessToken](#memos-api-v2-UserAccessToken) | | |
### CreateUserRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [User](#memos-api-v2-User) | | |
### CreateUserResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [User](#memos-api-v2-User) | | |
### DeleteUserAccessTokenRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| username | [string](#string) | | |
| access_token | [string](#string) | | access_token is the access token to delete. |
### DeleteUserAccessTokenResponse
### GetUserRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| username | [string](#string) | | |
### GetUserResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [User](#memos-api-v2-User) | | |
### ListUserAccessTokensRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| username | [string](#string) | | |
### ListUserAccessTokensResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| access_tokens | [UserAccessToken](#memos-api-v2-UserAccessToken) | repeated | |
### UpdateUserRequest
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [User](#memos-api-v2-User) | | |
| update_mask | [google.protobuf.FieldMask](#google-protobuf-FieldMask) | | |
### UpdateUserResponse
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| user | [User](#memos-api-v2-User) | | |
### User
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| id | [int32](#int32) | | |
| username | [string](#string) | | |
| role | [User.Role](#memos-api-v2-User-Role) | | |
| email | [string](#string) | | |
| nickname | [string](#string) | | |
| avatar_url | [string](#string) | | |
| password | [string](#string) | | |
| row_status | [RowStatus](#memos-api-v2-RowStatus) | | |
| create_time | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
| update_time | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
### UserAccessToken
| Field | Type | Label | Description |
| ----- | ---- | ----- | ----------- |
| access_token | [string](#string) | | |
| description | [string](#string) | | |
| issued_at | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
| expires_at | [google.protobuf.Timestamp](#google-protobuf-Timestamp) | | |
### User.Role
| Name | Number | Description |
| ---- | ------ | ----------- |
| ROLE_UNSPECIFIED | 0 | |
| HOST | 1 | |
| ADMIN | 2 | |
| USER | 3 | |
### UserService
| Method Name | Request Type | Response Type | Description |
| ----------- | ------------ | ------------- | ------------|
| GetUser | [GetUserRequest](#memos-api-v2-GetUserRequest) | [GetUserResponse](#memos-api-v2-GetUserResponse) | |
| CreateUser | [CreateUserRequest](#memos-api-v2-CreateUserRequest) | [CreateUserResponse](#memos-api-v2-CreateUserResponse) | |
| UpdateUser | [UpdateUserRequest](#memos-api-v2-UpdateUserRequest) | [UpdateUserResponse](#memos-api-v2-UpdateUserResponse) | |
| ListUserAccessTokens | [ListUserAccessTokensRequest](#memos-api-v2-ListUserAccessTokensRequest) | [ListUserAccessTokensResponse](#memos-api-v2-ListUserAccessTokensResponse) | ListUserAccessTokens returns a list of access tokens for a user. |
| CreateUserAccessToken | [CreateUserAccessTokenRequest](#memos-api-v2-CreateUserAccessTokenRequest) | [CreateUserAccessTokenResponse](#memos-api-v2-CreateUserAccessTokenResponse) | CreateUserAccessToken creates a new access token for a user. |
| DeleteUserAccessToken | [DeleteUserAccessTokenRequest](#memos-api-v2-DeleteUserAccessTokenRequest) | [DeleteUserAccessTokenResponse](#memos-api-v2-DeleteUserAccessTokenResponse) | DeleteUserAccessToken deletes an access token for a user. |
## Scalar Value Types
| .proto Type | Notes | C++ | Java | Python | Go | C# | PHP | Ruby |
| ----------- | ----- | --- | ---- | ------ | -- | -- | --- | ---- |
| double | | double | double | float | float64 | double | float | Float |
| float | | float | float | float | float32 | float | float | Float |
| int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
| int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long | int64 | long | integer/string | Bignum |
| uint32 | Uses variable-length encoding. | uint32 | int | int/long | uint32 | uint | integer | Bignum or Fixnum (as required) |
| uint64 | Uses variable-length encoding. | uint64 | long | int/long | uint64 | ulong | integer/string | Bignum or Fixnum (as required) |
| sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
| sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long | int64 | long | integer/string | Bignum |
| fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int | uint32 | uint | integer | Bignum or Fixnum (as required) |
| fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long | uint64 | ulong | integer/string | Bignum |
| sfixed32 | Always four bytes. | int32 | int | int | int32 | int | integer | Bignum or Fixnum (as required) |
| sfixed64 | Always eight bytes. | int64 | long | int/long | int64 | long | integer/string | Bignum |
| bool | | bool | boolean | boolean | bool | bool | boolean | TrueClass/FalseClass |
| string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode | string | string | string | String (UTF-8) |
| bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str | []byte | ByteString | string | String (ASCII-8BIT) |