API · Platform · Webhooks
Replay webhook events.
Re-deliver every event that was originally produced after since to this endpoint. Use it after webhook outage recovery, when a consumer's database fell behind and needs to catch up, or when a new consumer is bootstrapped against an existing entity and needs the historical event log replayed.
Replays preserve original event identity — the id, type, data, and original created timestamp are all unchanged. The Matter-Signature header is recomputed against the active secret at delivery time, and the Matter-Replay: true header is set so downstream systems can choose to dedupe against their event-id ledger.
Caveats - Replays are subject to the same per-entity ordering invariants as live deliveries. A replay against an entity with an in-flight live event waits for live delivery to drain first. - Replays count against the same throughput budget as live deliveries; bursting a multi-day backlog into a small endpoint can exhaust the consumer. Pace yourself.
Returns 202 Accepted with the replay job. Idempotent via Idempotency-Key. See idempotency.
See also: Webhooks API overview.
Last updated
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
sincestringRequiredEvent ID or ISO timestamp.
Response Body
application/problem+json
application/problem+json
application/problem+json
Request
curl -X POST "https://api.mattermode.com/v1/webhook_endpoints/{id}/replay" \ -H "Content-Type: application/json" \ -d '{ "since": "string" }'const body = JSON.stringify({ "since": "string"})fetch("https://api.mattermode.com/v1/webhook_endpoints/{id}/replay", { method: "POST", headers: { "Content-Type": "application/json" }, body})package mainimport ( "fmt" "net/http" "io/ioutil" "strings")func main() { url := "https://api.mattermode.com/v1/webhook_endpoints/{id}/replay" body := strings.NewReader(`{ "since": "string" }`) req, _ := http.NewRequest("POST", url, body) req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := ioutil.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body))}import requestsheaders = { "Authorization": "Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc", "Matter-Version": "2026-06-10", "Idempotency-Key": "ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b",}payload = { "since": "string"}resp = requests.post( "https://api.mattermode.com/v1/webhook_endpoints/whe_N7kFvY5j/replay", headers=headers, json=payload,)resp.raise_for_status()print(resp.json())import java.net.URI;import java.net.http.HttpClient;import java.net.http.HttpRequest;import java.net.http.HttpResponse;import java.net.http.HttpResponse.BodyHandlers;import java.time.Duration;import java.net.http.HttpRequest.BodyPublishers;var body = BodyPublishers.ofString("""{ "since": "string"}""");HttpClient client = HttpClient.newBuilder() .connectTimeout(Duration.ofSeconds(10)) .build();HttpRequest.Builder requestBuilder = HttpRequest.newBuilder() .uri(URI.create("https://api.mattermode.com/v1/webhook_endpoints/{id}/replay")) .header("Content-Type", "application/json") .POST(body) .build();try { HttpResponse<String> response = client.send(requestBuilder.build(), BodyHandlers.ofString()); System.out.println("Status code: " + response.statusCode()); System.out.println("Response body: " + response.body());} catch (Exception e) { e.printStackTrace();}using System;using System.Net.Http;using System.Text;var body = new StringContent("""{ "since": "string"}""", Encoding.UTF8, "application/json");var client = new HttpClient();var response = await client.PostAsync("https://api.mattermode.com/v1/webhook_endpoints/{id}/replay", body);var responseBody = await response.Content.ReadAsStringAsync();curl --request POST 'https://api.mattermode.com/v1/webhook_endpoints/whe_N7kFvY5j/replay' \ --header 'Authorization: Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc' \ --header 'Matter-Version: 2026-06-10' \ --header 'Idempotency-Key: ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b' \ --header 'Content-Type: application/json' \ --data '{ "since": "string"}'const response = await fetch("https://api.mattermode.com/v1/webhook_endpoints/whe_N7kFvY5j/replay", { method: "POST", headers: { "Authorization": "Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc", "Matter-Version": "2026-06-10", "Idempotency-Key": "ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b", "Content-Type": "application/json", }, body: JSON.stringify({ "since": "string" }),});if (!response.ok) { throw new Error(`Matter API ${response.status}: ${await response.text()}`);}const data = await response.json();console.log(data);Response
No example available.
{
"type": "https://mattermode.com/docs/errors/invalid_request",
"title": "Invalid request",
"status": 400,
"code": "invalid_request",
"detail": "Request body could not be parsed as JSON.",
"doc_url": "https://mattermode.com/docs/guides/errors#invalid_request",
"request_id": "req_Qw9xYz8A"
}{
"type": "https://mattermode.com/docs/errors/authentication_required",
"title": "Authentication required",
"status": 401,
"code": "authentication_required",
"detail": "No bearer token was supplied. Pass `Authorization: Bearer sk_live_...` on every request.",
"doc_url": "https://mattermode.com/docs/guides/errors#authentication_required",
"request_id": "req_Qw9xYz8A"
}{
"type": "https://mattermode.com/docs/errors/rate_limit_exceeded",
"title": "Rate limit exceeded",
"status": 429,
"code": "rate_limit_exceeded",
"detail": "Request rate exceeded for this key. Retry after `retry_after` seconds or honor the `Retry-After` header.",
"doc_url": "https://mattermode.com/docs/guides/errors#rate_limit_exceeded",
"request_id": "req_Qw9xYz8A",
"retry_after": 30
}