--- title: "Changes to Create a monitor" method: POST path: "/monitors" --- # Changes to Create a monitor `POST /monitors` > Every recorded change to this operation, newest first. ## Timeline Changed in 8 of 26 revisions. - **2026-08-08** `182f532c2552`: 3 warning - **2026-08-07** `3c6a01ba967f`: 3 warning - **2026-08-06** `fc8ac2f5f021`: 12 warning - **2026-07-31** `f5c503b03f98`: 12 warning - **2026-07-27** `8c72c31815a5`: 2 info - **2026-07-26** `35f1d8d4ea26`: 12 breaking, 16 warning, 3 info - **2026-07-21** `3764d9c86493`: 4 breaking, 28 warning, 8 info - **2026-07-09** `de91b92d5fb7`: 1 info ## Changes - **2026-08-08** `182f532c2552`: 3 warning - added the new `WEBSITE_BLOCKED` enum value to the `error_code` response property for the response status `400` - added the new `WEBSITE_BLOCKED` enum value to the `error_code` response property for the response status `401` - added the new `WEBSITE_BLOCKED` enum value to the `error_code` response property for the response status `403` - **2026-08-07** `3c6a01ba967f`: 3 warning - added the new `COLD_DOMAIN_TIMEOUT_TOO_LOW` enum value to the `error_code` response property for the response status `400` - added the new `COLD_DOMAIN_TIMEOUT_TOO_LOW` enum value to the `error_code` response property for the response status `401` - added the new `COLD_DOMAIN_TIMEOUT_TOO_LOW` enum value to the `error_code` response property for the response status `403` - **2026-08-06** `fc8ac2f5f021`: 12 warning - added the new `CONTENT_TOO_LARGE` enum value to the `error_code` response property for the response status `400` - added the new `CONTENT_TOO_LARGE` enum value to the `error_code` response property for the response status `401` - added the new `CONTENT_TOO_LARGE` enum value to the `error_code` response property for the response status `403` - added the new `PDF_IMAGES_ONLY` enum value to the `error_code` response property for the response status `400` - added the new `PDF_IMAGES_ONLY` enum value to the `error_code` response property for the response status `401` - added the new `PDF_IMAGES_ONLY` enum value to the `error_code` response property for the response status `403` - added the new `PDF_SKIPPED` enum value to the `error_code` response property for the response status `400` - added the new `PDF_SKIPPED` enum value to the `error_code` response property for the response status `401` - added the new `PDF_SKIPPED` enum value to the `error_code` response property for the response status `403` - added the new `WEBSITE_NOT_FOUND` enum value to the `error_code` response property for the response status `400` - added the new `WEBSITE_NOT_FOUND` enum value to the `error_code` response property for the response status `401` - added the new `WEBSITE_NOT_FOUND` enum value to the `error_code` response property for the response status `403` - **2026-07-31** `f5c503b03f98`: 12 warning - added the new `BATCH_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `400` - added the new `BATCH_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `401` - added the new `BATCH_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `403` - added the new `BATCH_NOT_CANCELLABLE` enum value to the `error_code` response property for the response status `400` - added the new `BATCH_NOT_CANCELLABLE` enum value to the `error_code` response property for the response status `401` - added the new `BATCH_NOT_CANCELLABLE` enum value to the `error_code` response property for the response status `403` - added the new `BATCH_NOT_COMPLETED` enum value to the `error_code` response property for the response status `400` - added the new `BATCH_NOT_COMPLETED` enum value to the `error_code` response property for the response status `401` - added the new `BATCH_NOT_COMPLETED` enum value to the `error_code` response property for the response status `403` - added the new `IDEMPOTENCY_KEY_CONFLICT` enum value to the `error_code` response property for the response status `400` - added the new `IDEMPOTENCY_KEY_CONFLICT` enum value to the `error_code` response property for the response status `401` - added the new `IDEMPOTENCY_KEY_CONFLICT` enum value to the `error_code` response property for the response status `403` - **2026-07-27** `8c72c31815a5`: 2 info - added the new optional request property `target/oneOf[subschema #1: Page target]/instructions` - added the optional property `allOf[subschema #1: Monitor]/target/oneOf[subschema #1: Page target]/instructions` to the response with the `201` status - **2026-07-26** `35f1d8d4ea26`: 12 breaking, 16 warning, 3 info - the `target/oneOf[subschema #2: Sitemap target]/exclude/items/` request property's minLength was increased from `0` to `1` - the `target/oneOf[subschema #2: Sitemap target]/include/items/` request property's minLength was increased from `0` to `1` - the response's body type changed from `object` to no type for status `201` - removed the required property `change_detection` from the response with the `201` status - removed the required property `created_at` from the response with the `201` status - removed the required property `id` from the response with the `201` status - removed the required property `mode` from the response with the `201` status - removed the required property `name` from the response with the `201` status - removed the required property `schedule` from the response with the `201` status - removed the required property `status` from the response with the `201` status - removed the required property `target` from the response with the `201` status - removed the required property `updated_at` from the response with the `201` status - the `target/oneOf[subschema #2: Sitemap target]/exclude/items/` request property's maxLength was set to `200` - the `target/oneOf[subschema #2: Sitemap target]/include/items/` request property's maxLength was set to `200` - removed the optional property `baseline` from the response with the `201` status - removed the optional property `last_change_at` from the response with the `201` status - removed the optional property `last_error` from the response with the `201` status - removed the optional property `last_run_at` from the response with the `201` status - removed the optional property `next_run_at` from the response with the `201` status - removed the optional property `tags` from the response with the `201` status - removed the optional property `webhook` from the response with the `201` status - removed the optional property `webhook_failure` from the response with the `201` status - added the new `MONITOR_NO_WEBHOOK` enum value to the `error_code` response property for the response status `400` - added the new `MONITOR_NO_WEBHOOK` enum value to the `error_code` response property for the response status `401` - added the new `MONITOR_NO_WEBHOOK` enum value to the `error_code` response property for the response status `403` - added the new `PAID_PLAN_REQUIRED` enum value to the `error_code` response property for the response status `400` - added the new `PAID_PLAN_REQUIRED` enum value to the `error_code` response property for the response status `401` - added the new `PAID_PLAN_REQUIRED` enum value to the `error_code` response property for the response status `403` - the request property `change_detection` became optional - the request property `schedule` became optional - added `#/components/schemas/MonitorsMonitor, subschema #2` to the response body `allOf` list for the response status `201` - **2026-07-21** `3764d9c86493`: 4 breaking, 28 warning, 8 info - the request property `webhook` became not nullable - removed `#/components/schemas/MonitorsExtractTarget` from the `target` request property `oneOf` list - added `subschema #3` to the `target` response property `oneOf` list for the response status `201` - added `subschema #4` to the `baseline` response property `oneOf` list for the response status `201` - removed `#/components/schemas/MonitorsWebhookConfig` from the `webhook` request property `allOf` list - added the new `COLLECTION_PAUSED` enum value to the `error_code` response property for the response status `400` - added the new `COLLECTION_PAUSED` enum value to the `error_code` response property for the response status `401` - added the new `COLLECTION_PAUSED` enum value to the `error_code` response property for the response status `403` - added the new `DISPOSABLE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `400` - added the new `DISPOSABLE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `401` - added the new `DISPOSABLE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `403` - added the new `FREE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `400` - added the new `FREE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `401` - added the new `FREE_EMAIL_DETECTED` enum value to the `error_code` response property for the response status `403` - added the new `MONITOR_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `400` - added the new `MONITOR_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `401` - added the new `MONITOR_LIMIT_EXCEEDED` enum value to the `error_code` response property for the response status `403` - added the new `MONITOR_PAUSED` enum value to the `error_code` response property for the response status `400` - added the new `MONITOR_PAUSED` enum value to the `error_code` response property for the response status `401` - added the new `MONITOR_PAUSED` enum value to the `error_code` response property for the response status `403` - added the new `SEARCH_UNAVAILABLE` enum value to the `error_code` response property for the response status `400` - added the new `SEARCH_UNAVAILABLE` enum value to the `error_code` response property for the response status `401` - added the new `SEARCH_UNAVAILABLE` enum value to the `error_code` response property for the response status `403` - added the new `UNSUPPORTED_CONTENT` enum value to the `error_code` response property for the response status `400` - added the new `UNSUPPORTED_CONTENT` enum value to the `error_code` response property for the response status `401` - added the new `UNSUPPORTED_CONTENT` enum value to the `error_code` response property for the response status `403` - added the new `ZDR_NOT_ENABLED` enum value to the `error_code` response property for the response status `400` - added the new `ZDR_NOT_ENABLED` enum value to the `error_code` response property for the response status `401` - added the new `ZDR_NOT_ENABLED` enum value to the `error_code` response property for the response status `403` - added the new `ZDR_NOT_SUPPORTED` enum value to the `error_code` response property for the response status `400` - added the new `ZDR_NOT_SUPPORTED` enum value to the `error_code` response property for the response status `401` - added the new `ZDR_NOT_SUPPORTED` enum value to the `error_code` response property for the response status `403` - added `subschema #1, subschema #2` to the `webhook` request property `anyOf` list - added `subschema #3` to the `target` request property `oneOf` list - added the optional property `webhook_failure` to the response with the `201` status - removed `#/components/schemas/MonitorsRunError` from the `last_error` response property `allOf` list for the response status `201` - removed `#/components/schemas/MonitorsWebhookConfig` from the `webhook` response property `allOf` list for the response status `201` - added `subschema #1, subschema #2` to the `last_error` response property `anyOf` list for the response status `201` - added `subschema #1, subschema #2` to the `webhook` response property `anyOf` list for the response status `201` - removed `#/components/schemas/MonitorsExtractTarget` from the `target` response property `oneOf` list for the response status `201` - **2026-07-09** `de91b92d5fb7`: 1 info - endpoint added --- [Operation](https://skmtc.dev/context/apis/context-dev/docs/monitors/post.md) - [API](https://skmtc.dev/context/apis/context-dev.md) - [Page](https://skmtc.dev/context/apis/context-dev/changes/monitors/post)