---
title: "Changes to Update an TCP check"
method: PUT
path: "/v1/checks/tcp/{id}"
---

# Changes to Update an TCP check

`PUT /v1/checks/tcp/{id}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 2 of 4 revisions.

- **2026-08-12** `87d29dc7b4fe` — 22 breaking, 11 warning, 61 info
- **2026-08-05** `9e903da4f3da` — 2 info

## Changes

- **2026-08-12** `87d29dc7b4fe` — 22 breaking, 11 warning, 61 info
  - request body became required
  - for the `path` request parameter `id`, the minLength was increased from `0` to `1`
  - for the `header` request parameter `x-checkly-account`, the type/format was changed from `string`/`` to `string`/`uuid`
  - for the `path` request parameter `id`, the type/format was changed from `string`/`` to `string`/`uuid`
  - request property `request/assertions/items/comparison` was restricted to a list of enum values
  - the `name` request property's minLength was increased from `0` to `1`
  - the `privateLocations/items/` request property's minLength was increased from `0` to `1`
  - the `request/data` request property's minLength was increased from `0` to `1`
  - the `request/hostname` request property's minLength was increased from `0` to `1`
  - the `tags/items/` request property's minLength was increased from `0` to `1`
  - the `triggerIncident/serviceId` request property's minLength was increased from `0` to `1`
  - the `alertSettings/parallelRunFailureThreshold/percentage` request property type/format changed from `number`/`` to `integer`/``
  - the `alertSettings/reminders/amount` request property type/format changed from `number`/`` to `integer`/``
  - the `alertSettings/reminders/interval` request property type/format changed from `number`/`` to `integer`/``
  - the `alertSettings/runBasedEscalation/failedRunThreshold` request property type/format changed from `number`/`` to `integer`/``
  - the `alertSettings/timeBasedEscalation/minutesFailingThreshold` request property type/format changed from `number`/`` to `integer`/``
  - the `triggerIncident/serviceId` request property type/format changed from `string`/`` to `string`/`uuid`
  - the response property `alertChannels/email/items/address` became optional for the status `200`
  - the response property `alertChannels/slack/items/url` became optional for the status `200`
  - the response property `alertChannels/sms/items/number` became optional for the status `200`
  - the response property `alertChannels/webhook/items/url` became optional for the status `200`
  - the `created_at` response's property type/format changed from `string`/`date` to `string`/`date-time` for status `200`
  - removed the optional property `attributes` from the response with the `401` status
  - removed the optional property `attributes` from the response with the `429` status
  - added the new `CONTAINS` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `EQUALS` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `GREATER_THAN` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `IS_EMPTY` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `LESS_THAN` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `NOT_CONTAINS` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `NOT_EMPTY` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `NOT_EQUALS` enum value to the `request/assertions/items/comparison` response property for the response status `200`
  - added the new `undefined` enum value to the `runtimeId` response property for the response status `200`
  - added the new optional request property `checkType`
  - added the new optional request property `request/body`
  - added the new optional request property `request/url`
  - the `activated` request property default value `true` was removed
  - the `activated` request property default value `true` was removed
  - the `alertSettings` request property default value `{"escalationType":"RUN_BASED","runBasedEscalation":{"failedRunThreshold":1},"reminders":{"amount":0,"interval":5},"parallelRunFailureThreshold":{"enabled":false,"percentage":10}}` was removed
  - the `amount` request property default value `0` was removed
  - …54 more
- **2026-08-05** `9e903da4f3da` — 2 info
  - the `degradedResponseTime` request property's max was increased from `5000.00` to `45000.00`
  - the `maxResponseTime` request property's max was increased from `5000.00` to `45000.00`

---

[Operation](https://skmtc.dev/checklyhq/apis/checkly-public-api/docs/v1/checks/tcp/:id/put.md) · [API](https://skmtc.dev/checklyhq/apis/checkly-public-api.md) · [Page](https://skmtc.dev/checklyhq/apis/checkly-public-api/changes/v1/checks/tcp/:id/put)