# List verifications (/docs/api-reference/verifications/list-verifications)

Verifications of the API key's environment, newest first. Pass the last `id` as `after` to get the next page while `has_more` is true.

`GET https://api.coss.com/v1/verifications`

Authenticate with your API key as a bearer token (`Authorization: Bearer coss_test_…`). Responses are JSON with snake_case fields; errors are `{ error: { type, code, message, param?, issues?, request_id } }` (https://coss.com/docs/api-reference/errors.md).

## Query parameters

- `to` (string, 1-320 characters): Only verifications to this destination.
- `status` ("pending" | "approved" | "expired" | "canceled" | "failed" | "blocked"): Only verifications in this status.
- `limit` (integer, 1-100): 1-100, default 20.
- `after` (string, at most 64 characters): Cursor: the `id` of the last item of the previous page.

## Example request

TypeScript (the `coss` package):

```ts
import { Coss } from "coss";

const coss = new Coss({
  apiKey: process.env.COSS_API_KEY,
  baseUrl: "https://api.coss.com",
});

const { data, error } = await coss.verify.list();
```

HTTP:

```sh
curl -X GET "https://api.coss.com/v1/verifications" \
  -H "Authorization: Bearer $COSS_API_KEY"
```

## Response 200

A page of verifications.

- `object` ("list", required)
- `data` (object[], required)
  - `object` ("verification", required)
  - `id` (string, required)
  - `channel` ("sms" | "email", required)
  - `to` (string, required)
  - `country` (string | null, required): ISO 3166 country of a phone number.
  - `status` ("pending" | "approved" | "expired" | "canceled" | "failed" | "blocked", required): `pending` until the right code is checked (`approved`) or it ends: `expired`, `canceled`, `failed` (too many wrong codes, or the code couldn't be sent) or `blocked` (the fraud guard stopped it before anything was sent).
  - `failure` (object | null, required): Why it `failed`.
    - `code` (string, required)
    - `message` (string, required)
  - `reasons` (object[], required): Why it was `blocked` (empty otherwise).
    - `code` (string, required)
    - `value` (number)
  - `attempts` (integer, required): Wrong codes checked so far.
  - `max_attempts` (integer, required)
  - `sends` (object[], required): Each time the code was sent.
    - `channel` ("sms" | "email", required)
    - `route` ("own_number" | "shared_number" | "email" | "coss_email", required): `own_number`: one of your numbers; `shared_number`: coss.com's; `email`: your sender; `coss_email`: coss.com's sender.
    - `sms_id` (string | null, required): The SMS, in your environment: `own_number`, or any in a sandbox environment (`null` for coss.com's shared numbers' messages).
    - `email_id` (string | null, required): The email (`email` route only).
    - `created_at` (string, required, date-time)
  - `tags` (object[], required)
    - `name` (string, required)
    - `value` (string, required)
  - `sandbox` (boolean, required): Made in a sandbox environment: simulated, and the code is always zeros.
  - `expires_at` (string, required, date-time)
  - `approved_at` (string | null, required, date-time)
  - `created_at` (string, required, date-time)
- `has_more` (boolean, required)

Example:

```json
{
  "object": "list",
  "data": [],
  "has_more": false
}
```

## Errors

- `400`: The `Coss-Version` header names an unknown API version (`invalid_api_version`).
- `401`: The API key is missing, invalid, revoked or expired (`authentication_error`).
- `403`: The API key lacks the permission this endpoint needs (`permission_error`), or its organization is suspended (`organization_suspended`).
- `422`: A query parameter failed validation (`validation_error`, see `issues`).
- `429`: Too many requests with this API key (`rate_limited`), or too many requests with invalid keys from this address (`too_many_failed_authentications`). Retry after `Retry-After` seconds. Successful responses carry `RateLimit-Limit`, `RateLimit-Remaining` and `RateLimit-Reset` (seconds until the limit is fully restored).
- `500`: Unexpected server error (`api_error` / `internal_error`).
- `503`: The API key could not be verified right now; retry (`service_unavailable`).