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# Reply to a message

> Reply to a comment or message in the Priority Inbox. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/sendible/reply_to_message

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Reply to a comment or message in the Priority Inbox.

Sendible MCP tools: https://cotlet.dev/docs/mcp/sendible.md

MCP tool: `sendible_write → reply_to_message`

Access: write. Confirm: waits for the user's OK before it runs.

Sends a reply as the profile the message came in on. It works for Facebook, Instagram and LinkedIn, the networks Sendible lets you reply on from the Priority Inbox. A Facebook private message can be answered only within 24 hours after it was sent. The reply is public for a comment and private for a message. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `message_id` | string | yes | Message from list_inbox_messages. |
| `body` | string | yes | Reply text. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "sendible_write",
    "arguments": {
      "operation": "reply_to_message",
      "arguments": {
        "message_id": "msg_91f2",
        "body": "Hi Dana, yes: we are open on Saturdays from 9 to 1. You can book at harbordental.example/book."
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "message_id": "msg_91f2",
    "reply_id": "rep_5c10",
    "status": "sent",
    "profile": "Harbor Dental (Facebook Page)"
  },
  "isError": false
}
```

Previous: [Approve or reject a task](https://cotlet.dev/docs/mcp/sendible/decide_task.md)
Next: [Archive inbox messages](https://cotlet.dev/docs/mcp/sendible/archive_inbox_messages.md)

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## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.