Replay webhook events

Queues the events since a given time (at most 7 days back, at most 10000 events) for delivery to this endpoint again. Only events the endpoint subscribes to are queued. Requires an Idempotency-Key and sends no messages to contacts.

POST /v1/webhook-endpoints/{endpoint_id}/replay

Permission	`webhooks:write` (all permissions)
Risk	Write (no outside effect)
Idempotency-Key	Required (how it works)
Safe to repeat	Safe to repeat with the same Idempotency-Key: the first answer comes back and nothing is done twice.
Rate limit class	`write` (120 requests per minute per key)
Confirmation	None
MCP tool	Not available in MCP
Since version	2026-10-25

#What it does

Changes data in your account. It does not send messages to contacts.
Acts on a connected outside system.
Safe to repeat with the same Idempotency-Key.

#Request

Header

Name	Required	Description
`Authorization`	yes	`Bearer <key>`
`Idempotency-Key`	yes	A unique value for this operation, for example a UUID (1 to 255 visible ASCII characters).

Path parameters

Name	Type	Description
`endpoint_id`	string	Webhook endpoint ID.

Body (JSON)

Name	Type	Required	Description
`since`	string	yes	Replay the events created at or after this time (at most 7 days back). up to 40 characters; format date-time

#Examples

curlPythonTypeScript

curl -X POST "https://api.smartchat.marketing/v1/webhook-endpoints/whe_0f8c1a2e4b7d4c3e9a5b6d7e8f901234/replay" \
  -H "Authorization: Bearer $SMARTCHAT_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
  "since": "2026-10-24T00:00:00Z"
}'

import os
import uuid
import requests

response = requests.post(
    "https://api.smartchat.marketing/v1/webhook-endpoints/whe_0f8c1a2e4b7d4c3e9a5b6d7e8f901234/replay",
    headers={
        "Authorization": "Bearer " + os.environ["SMARTCHAT_API_KEY"],
        "Idempotency-Key": str(uuid.uuid4()),
    },
    json={
        "since": "2026-10-24T00:00:00Z",
    },
)
response.raise_for_status()
print(response.json())

const response = await fetch("https://api.smartchat.marketing/v1/webhook-endpoints/whe_0f8c1a2e4b7d4c3e9a5b6d7e8f901234/replay", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.SMARTCHAT_API_KEY}`,
    "Idempotency-Key": crypto.randomUUID(),
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "since": "2026-10-24T00:00:00Z"
  }),
});
if (!response.ok) throw new Error(await response.text());
console.log(await response.json());

Response (202):

{
  "object": "webhook_replay",
  "endpoint_id": "whe_0f8c1a2e4b7d4c3e9a5b6d7e8f901234",
  "since": "2026-10-24T00:00:00Z",
  "queued": 12,
  "truncated": false
}

#Response

Status 202. Every response has the headers Request-Id, SmartChat-Version and X-RateLimit-*.

Name	Type	Description
`object`	string	Always "webhook_replay". always `webhook_replay`
`endpoint_id`	string	Endpoint that receives the events.
`since`	string	Start of the replay window as used. up to 40 characters; format date-time
`queued`	integer	Number of events queued for delivery. 0 to 10000
`truncated`	boolean	True if more than 10000 events matched; the oldest 10000 were queued.

#Errors

Code	Status	When
`idempotency_key_invalid`	400	The 'Idempotency-Key' header must be 1 to 255 visible ASCII characters.
`idempotency_key_required`	400	This call needs an 'Idempotency-Key' header.
`api_key_expired`	401	This API key has expired.
`api_key_invalid`	401	This API key is not valid.
`api_key_revoked`	401	This API key was revoked.
`authentication_required`	401	No API key was sent. Send 'Authorization: Bearer <key>'.
`insufficient_scope`	403	This key lacks a required permission.
`ip_not_allowed`	403	This IP address is not allowed for this key.
`endpoint_not_found`	404	No webhook endpoint with this ID exists in this account.
`conflict`	409	The state of the object does not allow this.
`idempotency_in_progress`	409	A request with this idempotency key is still running.
`idempotency_key_reused`	422	This idempotency key was already used with a different request.
`validation_failed`	422	A field is not valid.
`rate_limited`	429	Too many requests. Wait and try again.
`internal_error`	500	Something went wrong on our side.

All errors use one format.