# Adds a field for a Terminal reader's last connection timestamp

## What’s new

Adds a [last_seen_at](https://docs.stripe.com/api/terminal/readers/object.md?api-version=2025-10-29.clover#terminal_reader_object-last_seen_at) field for a Terminal [Reader](https://docs.stripe.com/api/terminal/readers.md?api-version=2025-10-29.clover) that describes the timestamp for when the reader last connected to Stripe.

## Impact

When [retrieving](https://docs.stripe.com/api/terminal/readers/retrieve.md?api-version=2025-10-29.clover) or [listing](https://docs.stripe.com/api/terminal/readers/list.md?api-version=2025-10-29.clover) Readers, you can use the `last_seen_at` field to determine when the device was most recently active.

## Changes

#### REST API

| Parameter      | Change | Resources or endpoints                                                        |
| -------------- | ------ | ----------------------------------------------------------------------------- |
| `last_seen_at` | Added  | [Terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### Ruby

| Parameter      | Change | Resources or methods                                                           |
| -------------- | ------ | ------------------------------------------------------------------------------ |
| `last_seen_at` | Added  | [Terminal::Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### Python

| Parameter      | Change | Resources or methods                                                          |
| -------------- | ------ | ----------------------------------------------------------------------------- |
| `last_seen_at` | Added  | [Terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### PHP

| Parameter      | Change | Resources or methods                                                          |
| -------------- | ------ | ----------------------------------------------------------------------------- |
| `last_seen_at` | Added  | [Terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### Java

| Parameter    | Change | Resources or methods                                                          |
| ------------ | ------ | ----------------------------------------------------------------------------- |
| `lastSeenAt` | Added  | [terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### Node.js

| Parameter      | Change | Resources or methods                                                          |
| -------------- | ------ | ----------------------------------------------------------------------------- |
| `last_seen_at` | Added  | [Terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### Go

| Parameter    | Change | Resources or methods                                                         |
| ------------ | ------ | ---------------------------------------------------------------------------- |
| `LastSeenAt` | Added  | [TerminalReader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

#### .NET

| Parameter    | Change | Resources or methods                                                          |
| ------------ | ------ | ----------------------------------------------------------------------------- |
| `LastSeenAt` | Added  | [Terminal.Reader](/api/terminal/readers/object?api-version=2025-10-29.clover) |

## Upgrade

#### REST API

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. If you use an SDK, upgrade to the corresponding SDK version for this API version.
   - If you don’t use an SDK, update your [API requests](https://docs.stripe.com/api/versioning.md) to include `Stripe-Version: 2025-10-29.clover`
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### Ruby

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your Ruby SDK to [v17.1.0](https://github.com/stripe/stripe-ruby/releases/tag/v17.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### Python

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your Python SDK to [v13.1.0](https://github.com/stripe/stripe-python/releases/tag/v13.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### PHP

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your PHP SDK to [v18.1.0](https://github.com/stripe/stripe-php/releases/tag/v18.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### Java

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your Java SDK to [v30.1.0](https://github.com/stripe/stripe-java/releases/tag/v30.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### Node.js

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your Node SDK to [v19.2.0](https://github.com/stripe/stripe-node/releases/tag/v19.2.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### Go

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your Go SDK to [v83.1.0](https://github.com/stripe/stripe-go/releases/tag/v83.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

#### .NET

1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench.
1. Upgrade your .NET SDK to [v49.1.0](https://github.com/stripe/stripe-dotnet/releases/tag/v49.1.0)
1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md).
1. [Test your integration](https://docs.stripe.com/testing.md) against the new version.
1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md).
1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours.

Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md).

## Related changes

- [Adds support for tipping in Gibraltar pounds on Terminal readers](https://docs.stripe.com/changelog/clover/2025-10-29/terminal-tips-gip.md)