---
title: "Feedback on answers"
description: "Forward your users' thumbs up and down, with a comment, to the answers of your API key's conversations, so the workspace sees where the assistant falls short."
canonical: "https://lookio.app/docs/guides/answer-feedback"
updated: "2026-11-08"
---

# Feedback on answers

When your product shows an answer, your users can say if it helped. Send that thumb to Lookio. It appears next to the answer in the workspace [logs](/docs/guides/logs), with the thumbs from your [widgets](/docs/guides/widget/conversations).

## Send a thumb

You need two ids from the answer: `conversation_id` and `message_id`. Every stored answer returns both. See [Conversations and end users](/docs/guides/conversations-and-end-users).

```bash title="curl"
curl https://api.lookio.app/v1/conversations/CONVERSATION_ID/messages/MESSAGE_ID/feedback \
  -H "Authorization: Bearer $LOOKIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"rating": "down", "comment": "The price is out of date.", "end_user": "user_42"}'
```

```ts title="SDK"
await lookio.conversations.feedback(conversationId, messageId, {
  rating: "down", // "up", "down", or null to take it back
  comment: "The price is out of date.",
  end_user: "user_42",
});
```

```bash title="CLI"
lookio conversations feedback CONVERSATION_ID MESSAGE_ID down --comment "The price is out of date." --end-user user_42
```

The MCP tool is `send_answer_feedback`. Do not use `send_feedback`: it reports a problem with Lookio itself.

## The rules

- **One thumb per answer.** A new thumb replaces the old one. It never counts twice.
- **Take it back** with `rating: null`. Lookio also removes the comment.
- **The comment** is optional, up to 1,000 characters, with `up` or `down` only. A comment with `rating: null` fails with `invalid_parameter`.
- **`end_user`** is optional. If you send it, the conversation must belong to that end user. If not, the call fails with `resource_not_found`.
- **Only answers take a thumb.** The id of a question, or of an answer in another conversation, fails with `resource_not_found`.
- **It is free.** It needs the `query` scope.
- **API keys only.** On a person's own chat, the call fails with `feature_not_available`. The widget collects its visitors' thumbs itself: see the `feedback` setting in [Appearance](/docs/guides/widget/appearance#behaviour).

## Read them

The thumb shows on the answer in [Get a conversation](/docs/api/conversations/get-conversation) (`rating` and `rating_comment`) and in the logs. To list the conversations with a thumbs down, filter the logs on **Rating**. See [Logs](/docs/guides/logs).

![The Conversations tab of Logs with a Thumbs up / down counter and a Feedback column showing thumbs up and a red thumbs down](/docs/images/app/logs-conversations.webp)

_Logs, Conversations: the Feedback column shows the thumbs of each conversation._