--- title: "Changes to Start a monitor" method: POST path: "/monitors/{id}/start" --- # Changes to Start a monitor `POST /monitors/{id}/start` > Every recorded change to this operation, newest first. ## Timeline Changed in 19 of 26 revisions. - **2026-11-02** `191b37343aa3`: 1 warning - **2026-11-02** `8c686e2fe60a`: 7 warning - **2026-10-30** `228a38c9ac64`: 1 warning, 1 info - **2026-10-28** `145c6a99d342`: 2 warning - **2026-10-27** `f5678299920b`: 12 warning - **2026-10-22** `0d9f0007fca8`: 2 warning - **2026-10-21** `6a9eb6db685d`: 1 warning - **2026-10-20** `7541d709a75b`: 1 warning - **2026-10-15** `29a46bb31078`: 2 warning - **2026-10-13** `1ee7109c3c5d`: 7 warning - **2026-10-05** `f4ef80f6b1d1`: 2 warning - **2026-09-29** `a5f0026ae206`: 1 warning, 1 info - **2026-09-28** `29cb29456736`: 1 info - **2026-09-23** `a5d48c0fe857`: 1 breaking, 1 info - **2026-08-31** `b376f77c9a7f`: 4 breaking - **2026-07-27** `1067b9e07292`: 1 breaking - **2026-07-13** `6a409d58fa74`: 2 breaking, 6 info - **2026-04-15** `d66d80d40a9d`: 5 info - **2026-02-15** `b053baca431f`: 1 info ## Changes - **2026-11-02** `191b37343aa3`: 1 warning - added the new `027-016` enum value to the `code` response property for the response status `default` - **2026-11-02** `8c686e2fe60a`: 7 warning - added the new `004-048` enum value to the `code` response property for the response status `default` - added the new `011-034` enum value to the `code` response property for the response status `default` - added the new `031-001` enum value to the `code` response property for the response status `default` - added the new `031-002` enum value to the `code` response property for the response status `default` - added the new `031-003` enum value to the `code` response property for the response status `default` - added the new `031-004` enum value to the `code` response property for the response status `default` - added the new `031-005` enum value to the `code` response property for the response status `default` - **2026-10-30** `228a38c9ac64`: 1 warning, 1 info - added the new `027-015` enum value to the `code` response property for the response status `default` - added the optional property `psps/items/customSettings/page/showMonitorsUnderGroups` to the response with the `201` status - **2026-10-28** `145c6a99d342`: 2 warning - added the new `011-032` enum value to the `code` response property for the response status `default` - added the new `011-033` enum value to the `code` response property for the response status `default` - **2026-10-27** `f5678299920b`: 12 warning - added the new `018-013` enum value to the `code` response property for the response status `default` - added the new `018-014` enum value to the `code` response property for the response status `default` - added the new `018-015` enum value to the `code` response property for the response status `default` - added the new `030-001` enum value to the `code` response property for the response status `default` - added the new `030-002` enum value to the `code` response property for the response status `default` - added the new `030-003` enum value to the `code` response property for the response status `default` - added the new `030-004` enum value to the `code` response property for the response status `default` - added the new `030-005` enum value to the `code` response property for the response status `default` - added the new `030-006` enum value to the `code` response property for the response status `default` - added the new `030-007` enum value to the `code` response property for the response status `default` - added the new `030-008` enum value to the `code` response property for the response status `default` - added the new `030-009` enum value to the `code` response property for the response status `default` - **2026-10-22** `0d9f0007fca8`: 2 warning - added the new `004-047` enum value to the `code` response property for the response status `default` - added the new `011-031` enum value to the `code` response property for the response status `default` - **2026-10-21** `6a9eb6db685d`: 1 warning - added the new `021-069` enum value to the `code` response property for the response status `default` - **2026-10-20** `7541d709a75b`: 1 warning - added the new `004-046` enum value to the `code` response property for the response status `default` - **2026-10-15** `29a46bb31078`: 2 warning - added the new `000-015` enum value to the `code` response property for the response status `default` - added the new `011-030` enum value to the `code` response property for the response status `default` - **2026-10-13** `1ee7109c3c5d`: 7 warning - added the new `009-037` enum value to the `code` response property for the response status `default` - added the new `011-029` enum value to the `code` response property for the response status `default` - added the new `024-004` enum value to the `code` response property for the response status `default` - added the new `024-005` enum value to the `code` response property for the response status `default` - added the new `024-006` enum value to the `code` response property for the response status `default` - added the new `024-007` enum value to the `code` response property for the response status `default` - added the new `024-008` enum value to the `code` response property for the response status `default` - **2026-10-05** `f4ef80f6b1d1`: 2 warning - added the new `003-021` enum value to the `code` response property for the response status `default` - added the new `004-045` enum value to the `code` response property for the response status `default` - **2026-09-29** `a5f0026ae206`: 1 warning, 1 info - added the new `009-036` enum value to the `code` response property for the response status `default` - added the optional property `portAlertCondition` to the response with the `201` status - **2026-09-28** `29cb29456736`: 1 info - added the required property `heartbeatUrl` to the response with the `201` status - **2026-09-23** `a5d48c0fe857`: 1 breaking, 1 info - the response property `url` became nullable for the status `201` - added the optional property `config/dependency` to the response with the `201` status - **2026-08-31** `b376f77c9a7f`: 4 breaking - added `subschema #1, subschema #2` to the `config/apiAssertions` response property `oneOf` list for the response status `201` - the `config/apiAssertions` response's property type changed from `object` to no type for status `201` - removed the required property `config/apiAssertions/checks` from the response with the `201` status - removed the required property `config/apiAssertions/logic` from the response with the `201` status - **2026-07-27** `1067b9e07292`: 1 breaking - the `interval` response property's min was decreased from `30.00` to `15.00` for the response status `201` - **2026-07-13** `6a409d58fa74`: 2 breaking, 6 info - the `timeout` response property's max was increased from `60.00` to `90.00` for the response status `201` - the `assignedAlertContacts/items/alertContactId` response's property type changed from `string` to `number` for status `201` - added the optional property `config/applicationErrorRetries` to the response with the `201` status - added the optional property `config/visualComparison` to the response with the `201` status - added the optional property `lastDayUptimes/histogram/items/changes` to the response with the `201` status - added the optional property `lastDayUptimes/totalChanges` to the response with the `201` status - added the required property `maintenanceWindows/items/monitorIds` to the response with the `201` status - added the required property `psps/items/tagIds` to the response with the `201` status - **2026-04-15** `d66d80d40a9d`: 5 info - added optional request body - added the optional property `config/ipVersion` to the response with the `201` status - added the optional property `config/udp` to the response with the `201` status - added the optional property `customFields` to the response with the `201` status - added the optional property `regionalData/THRESHOLD` to the response with the `201` status - **2026-02-15** `b053baca431f`: 1 info - endpoint added --- [Operation](https://skmtc.dev/uptimerobot/apis/uptimerobot-api/docs/monitors/:id/start/post.md) - [API](https://skmtc.dev/uptimerobot/apis/uptimerobot-api.md) - [Page](https://skmtc.dev/uptimerobot/apis/uptimerobot-api/changes/monitors/:id/start/post)