---
title: "Schedule a message for a future time (e.g. send_at='2026-04-23T10:00:00Z', max 8000 chars). Auto-cancelled if the contac"
method: POST
path: "/api/v1/inbox/conversations/{chat_id}/schedule"
tags: ["inbox"]
---

# Schedule a message for a future time (e.g. send_at='2026-04-23T10:00:00Z', max 8000 chars). Auto-cancelled if the contac

`POST /api/v1/inbox/conversations/{chat_id}/schedule`

## Request

- Base URL: `https://crispy.sh`
- URL: `https://crispy.sh/api/v1/inbox/conversations/{chat_id}/schedule`
- Auth: HTTP bearer

## Path parameters

- `chat_id` string, required

## Request body

- object
  - `message_text` string, required: Message text to send (max 8000 chars)
  - `send_at` string, required: ISO 8601 datetime when to send (e.g. '2026-04-23T10:00:00Z'). Must be in the future.
  - `note` string: Optional internal note (not sent, just for your reference)

## Response `200`

Success

## Other responses

- `401`: Missing or expired API key
- `403`: Insufficient key scope or permission denied
- `429`: Rate limit exceeded

---

[API](https://skmtc.dev/crispy/apis/crispy-rest-api.md) · [All operations](https://skmtc.dev/crispy/apis/crispy-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crispy/apis/crispy-rest-api/revisions/6bed0974d9ce?raw)