# Get the rpId migration of a connection

`GET /v1/connections/{connection_id}/rp-id-migration` · permission `connections:read`

Returns the latest rpId migration of a passkey connection, whether it is still running or already closed (see [Change the passkey rpId](change-rp-id.md)). The counts are written when the migration closes and are `null` while it is `active`. Reads are not audited.

## Request

| Field | Type | Required | Description |
|---|---|---|---|
| `connection_id` | path | yes | Passkey connection ID (`conn_…`). |

## Response

`200 OK`:

```json
{
  "id": "rpm_01j9xr4a6b8c0d2e4f6g8h0j2k",
  "connection_id": "conn_01j9xp6q0r1s5t7v9w1x3y5z7b",
  "previous_rp_id": null,
  "new_rp_id": "login.example.com",
  "status": "completed_early",
  "started_at": "2026-10-27T10:00:00Z",
  "ends_at": "2027-01-25T10:00:00Z",
  "completed_at": "2026-12-01T09:00:00Z",
  "revoked_count": 12,
  "new_registration_count": 340,
  "fallback_enabled_by_migration": false
}
```

| Field | Description |
|---|---|
| `status` | `active`, `completed` (the window ended) or `completed_early`. |
| `revoked_count` | Passkeys on the previous rpId that were revoked when the migration closed. |
| `new_registration_count` | Passkeys registered on the new rpId during the window. |

## Errors

| HTTP | code | When |
|---|---|---|
| 404 | `not_found` | The connection does not exist in this environment, is not a passkey connection, or has never had an rpId migration. |
| 401 | `unauthenticated` | The credential is missing, invalid or revoked. |
| 403 | `insufficient_permissions` | The credential lacks the required permission. |
| 429 | `rate_limited` | The rate limit was exceeded; retry after the `Retry-After` period. |
| 503 | `service_unavailable` | A dependency is temporarily unavailable; retry after the `Retry-After` period. |

## Example

```bash
curl "https://api.eu.keenauth.com/v1/connections/conn_01j9xp6q0r1s5t7v9w1x3y5z7b/rp-id-migration" \
  -H "Authorization: Bearer $KEENAUTH_SECRET_KEY"
```

```bash
keenauth connections rp-id-migration conn_01j9xp6q0r1s5t7v9w1x3y5z7b
```