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Documentation index for AI agents: llms.txt. Every page here is also served as markdown: add .md to its address, or request it with Accept: text/markdown.

Visual Monitoring API

Screenshot-based visual regression detection. This page lists all 9 endpoints in the Visual Monitoring area of the Visual Sentinel REST API.

Base URL: https://visualsentinel.com. Unless an endpoint says otherwise it accepts an API key or a session cookie, see Authentication. Most error responses use the ErrorResponse shape, see Errors and Rate limits.

Endpoints

Capture sub-page screenshot

POST /api/monitors/{id}/sub-pages/{subPageId}/capture

Queue a screenshot of a sub-page now. Refused with 409 VISUAL_DISABLED while the monitor's visual checks are off, 403 LIMIT_EXCEEDED when the monitor is not within the plan's visual monitor limit (or visual checks are off and the limit is reached), 409 SUBPAGE_NOT_ON_PLAN for a page beyond the plan's page limit, and 409 VISUAL_TARGET_NOT_READY when the page's capture target is not set up yet.

Parameters

  • id (path, string (uuid), required)
  • subPageId (path, string (uuid), required)

Responses

  • 200: Screenshot captured.
  • 403: LIMIT_EXCEEDED (feature: maxVisualMonitors) or FEATURE_RESTRICTED.
  • 409: Not captured: VISUAL_DISABLED, SUBPAGE_NOT_ON_PLAN, VISUAL_TARGET_NOT_READY, or the site is down right now (siteDown: true).

Get sub-page visual data

GET /api/monitors/{id}/sub-pages/{subPageId}/visual

Get visual monitoring data for a specific sub-page.

Parameters

  • id (path, string (uuid), required)
  • subPageId (path, string (uuid), required)

Responses

  • 200: Sub-page visual data.

Get visual monitoring data

GET /api/monitors/{id}/visual

Get visual monitoring history and screenshots.

Parameters

  • id (path, string (uuid), required)

Responses

Capture screenshot

POST /api/monitors/{id}/visual/capture

Capture a new screenshot for visual comparison. Only for a monitor with visual checks on and within the plan's visual monitor limit, the same rules as the scheduled captures. A monitor with visual checks off is refused with 409 VISUAL_DISABLED, or with 403 LIMIT_EXCEEDED when the workspace is also at its visual monitor limit (visual checks could not be turned on). A monitor past the limit after a plan change is refused with 403 LIMIT_EXCEEDED.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: Screenshot captured. Body: object.
  • 403: Plan restriction: LIMIT_EXCEEDED (feature: maxVisualMonitors, the workspace is at or over its visual monitor limit) or FEATURE_RESTRICTED (the plan has no visual checks).
  • 409: Not captured: VISUAL_DISABLED (visual checks are off for this monitor; turn them on first), or the site is down right now (siteDown: true).
FieldTypeRequiredDescription
successbooleanNo
screenshotUrlstringNo

Set visual baseline

POST /api/monitors/{id}/visual/baseline

Set the current screenshot as the baseline for visual comparisons.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: Baseline set.

Compare visual snapshots

POST /api/monitors/{id}/visual/compare

Compare two visual snapshots and return diff percentage.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: Comparison result with diff percentage.

Get deletable snapshots

GET /api/monitors/{id}/visual/delete

List visual snapshots that can be deleted.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: List of deletable snapshots.

Delete visual snapshots (POST)

POST /api/monitors/{id}/visual/delete

Delete specific visual snapshots by IDs.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: Snapshots deleted.

Delete visual snapshots

DELETE /api/monitors/{id}/visual/delete

Delete visual monitoring data.

Parameters

  • id (path, string (uuid), required)

Responses

  • 200: Snapshots deleted.

Data models

Request and response shapes these endpoints use: VisualDataResponse.

Generated from the OpenAPI 3.1 specification at https://docs.visualsentinel.com/openapi.json, the same file the interactive reference reads.