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List messages

GET
/v1/hooks/applications/{application}/messages

The application's messages, newest first (kept for 30 days).

Authorization

bearerAuth
headerAuthorizationBearer <token>

A secret API key from the dashboard: coss_live_… for production environments, coss_test_… for sandbox environments.

Path Parameters

application*string

The application's id (happ_…) or your uid for it.

Query Parameters

event_type?string

Only messages of this type.

Match^[A-Za-z0-9_.-]{1,64}$
limit?integer

1-100, default 50.

Range1 <= value <= 100
after?string

Cursor: the id of the last message of the previous page.

Header Parameters

Coss-Version?"2026-10-10"

The API version (a date) to use for this request. Defaults to your organization's version, pinned to the latest one when it first used the API and upgraded from the dashboard. The SDK always sends the version it was built for.

Value in"2026-10-10"

Response Body

A page of messages.

application/json
  1. response
object*"list"
Value in"list"
data*array<>
has_more*boolean
import { Coss } from "coss";const coss = new Coss({  apiKey: process.env.COSS_API_KEY,  baseUrl: "https://api.coss.com",});const { data, error } = await coss.hooks.messages.list("customer_8812");
{  "object": "list",  "data": [    {      "object": "hook_message",      "id": "hmsg_01k7c8m4q2f3e9v6t5r1n0p8yz",      "application_id": "happ_01k7c8m4q2f3e9v6t5r1n0p8yz",      "event_type": "invoice.paid",      "payload": {        "invoice_id": "in_1042",        "amount": 4200,        "currency": "usd"      },      "created_at": "2026-01-15T09:30:00.000Z"    }  ],  "has_more": false}