---
title: "Changes to Create an ICMP monitor"
method: POST
path: "/v1/checks/icmp"
---

# Changes to Create an ICMP monitor

`POST /v1/checks/icmp`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 2 of 4 revisions.

- **2026-08-12** `87d29dc7b4fe` — 22 breaking, 19 warning, 55 info
- **2026-08-05** `9e903da4f3da` — 4 info

## Changes

- **2026-08-12** `87d29dc7b4fe` — 22 breaking, 19 warning, 55 info
  - request body became required
  - for the `header` request parameter `x-checkly-account`, 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 `environmentVariables/items/key` request property's minLength was increased from `0` to `1`
  - 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/hostname` request property's minLength was increased from `0` to `1`
  - the `scriptPath` 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 `201`
  - the response property `alertChannels/slack/items/url` became optional for the status `201`
  - the response property `alertChannels/sms/items/number` became optional for the status `201`
  - the response property `alertChannels/webhook/items/url` became optional for the status `201`
  - the response property `request/assertions/items/property` became optional for the status `201`
  - the `created_at` response's property type/format changed from `string`/`date` to `string`/`date-time` for status `201`
  - the `degradedPacketLossThreshold` request property's exclusiveMinimum was set to `true`
  - the `maxPacketLossThreshold` request property's exclusiveMinimum was set to `true`
  - the `degradedPacketLossThreshold` request property's min was set to `0.00`
  - the `maxPacketLossThreshold` request property's min was set to `0.00`
  - removed the optional property `attributes` from the response with the `401` status
  - removed the optional property `attributes` from the response with the `402` 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 `201`
  - added the new `EQUALS` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `GREATER_THAN` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `IS_EMPTY` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `IS_NULL` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `LESS_THAN` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `NOT_CONTAINS` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `NOT_EMPTY` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `NOT_EQUALS` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `NOT_NULL` enum value to the `request/assertions/items/comparison` response property for the response status `201`
  - added the new `undefined` enum value to the `request/ipFamily` response property for the response status `201`
  - …56 more
- **2026-08-05** `9e903da4f3da` — 4 info
  - added the optional property `logicalId` to the response with the `201` status
  - added the optional property `member` to the response with the `201` status
  - added the optional property `pending` to the response with the `201` status
  - added the optional property `project` to the response with the `201` status

---

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