---
title: "POST /api/v1/memos/{memo}/reactions"
method: POST
path: "/api/v1/memos/{memo}/reactions"
tags: ["MemoService"]
---

# POST /api/v1/memos/{memo}/reactions

`POST /api/v1/memos/{memo}/reactions`

UpsertMemoReaction adds or updates the authenticated user's reaction on a
 memo. The reaction's content_id is the memo's resource name (memos/{memo}).

## Path parameters

- `memo` string, required

## Request body

- UpsertMemoReactionRequest
  - `name` string, required — Required. The resource name of the memo. Format: memos/{memo}
  - `reaction` Reaction, required
    - `name` string — The resource name of the reaction. Format: memos/{memo}/reactions/{reaction}
    - `creator` string — The resource name of the creator. Format: users/{user}
    - `contentId` string, required — The resource name of the content. For memo reactions, this should be the memo's resource name. Format: memos/{memo}
    - `reactionType` string, required — Required. The type of reaction (e.g., "👍", "❤️", "😄").
    - `createTime` string, date-time — Output only. The creation timestamp.

## Response `200`

OK

- Reaction
  - `name` string — The resource name of the reaction. Format: memos/{memo}/reactions/{reaction}
  - `creator` string — The resource name of the creator. Format: users/{user}
  - `contentId` string, required — The resource name of the content. For memo reactions, this should be the memo's resource name. Format: memos/{memo}
  - `reactionType` string, required — Required. The type of reaction (e.g., "👍", "❤️", "😄").
  - `createTime` string, date-time — Output only. The creation timestamp.

## Other responses

- `default` — Default error response

---

[API](https://skmtc.net/usememos/apis/untitled-api.md) · [All operations](https://skmtc.net/usememos/apis/untitled-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/usememos/untitled-api/versions/f01e84cf5acc/schema)