> ## Documentation Index > Fetch the complete documentation index at: https://cactal.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Capture an external page > Renders an external public page in a real browser and returns the image, to study a reference site or the user's existing site: its layout, hierarchy, density, and feel. Consent banners and overlays are dismissed first. Focus with `selector` (plus `padding`) or `clip` and page down with `scrollTo`; external pages render in their own color scheme and never full page. Capture your own website with `websitePreview.capture`. Charged in AI credits to the website's organization. ## OpenAPI ````yaml /api-reference/openapi.json post /webResearch/screenshot openapi: 3.1.0 info: title: Cactal API version: 1.0.0 description: >- The Cactal public API. Create, edit, publish, and operate websites programmatically. Authenticate every request with an API key sent as `Authorization: Bearer `. servers: - url: https://api.cactal.ai/v1 security: - apiKey: [] tags: - name: Documentation description: >- Search and read the Cactal product documentation for concepts, guides, agent workflows, platform behavior, and API operations. - name: Feedback description: >- Submit free-form product feedback from users and agents to the Cactal feedback inbox. - name: Websites description: >- Create and manage websites — the top-level resource that owns source code, content, assets, domains, and analytics. - name: Website editors description: >- Grant, list, and revoke website-scoped editor access, and invite collaborators to a single website by email. - name: API keys description: >- Create, scope, rotate, and revoke the API keys that authenticate programmatic and agent access. - name: Source code description: >- Read and edit the framework source files of a website draft. Mutations require an edit lease. - name: Publishing description: Validate, build, publish, and roll back website versions. - name: CMS collections description: >- Define the content model: collections of structured content owned by a website. - name: CMS fields description: Manage the typed fields that make up a collection schema. - name: CMS items description: >- Create, query, publish, and organize the content entries inside a collection. - name: Domains description: >- Manage platform subdomains and custom domains, including DNS verification and the primary domain. - name: Assets description: Upload and manage website files and images served from the Cactal CDN. - name: Media generation description: >- Generate reference-guided website images that are stored as ordinary Cactal CDN assets. - name: Web research description: >- Look at the public web for a website's work: screenshots and measurements of external pages, a business's own pages read into profiles, and many images at once on numbered contact sheets. - name: Project Context description: >- Upload private durable reference material that the website agent can search, read, and inspect. - name: Analytics description: >- Read first-party traffic analytics for a website and export datasets as CSV. - name: Forms description: >- Read and triage website form submissions, manage notification recipients, and configure per-form settings. Visitors submit to `POST /_cactal/forms/{name}` on the website itself. - name: Server functions description: >- Inspect a website's server function runs and run its `http` functions on the draft. Visitors call `http` functions with `POST /_framework/server/{name}` on the website itself. - name: Secrets description: >- Manage a website's write-only secrets, which its server functions read from `env`. Values can be set and deleted but are never returned. - name: Organizations description: Manage organizations, members, and organization-wide invitations. - name: Audit log description: >- Read the immutable record of actions performed in an organization by users and API keys. - name: Billing description: >- Read billing state and manage plans, site capacity, and prepaid usage balance. Every billing operation requires the organization owner role, which API keys cannot hold — today these operations are performed from the dashboard, return 403 for API-key callers, and are hidden from MCP tool lists. paths: /webResearch/screenshot: post: tags: - Web research summary: Capture an external page description: >- Renders an external public page in a real browser and returns the image, to study a reference site or the user's existing site: its layout, hierarchy, density, and feel. Consent banners and overlays are dismissed first. Focus with `selector` (plus `padding`) or `clip` and page down with `scrollTo`; external pages render in their own color scheme and never full page. Capture your own website with `websitePreview.capture`. Charged in AI credits to the website's organization. operationId: webResearch.screenshot requestBody: required: true content: application/json: schema: type: object properties: websiteId: type: string minLength: 1 description: >- A website you can edit; its organization pays for the call in AI credits. url: type: string maxLength: 2048 format: uri description: Absolute public http(s) URL of the page to capture. viewport: default: desktop description: Device class to render at. type: string enum: - desktop - tablet - mobile selector: description: >- Crop to the first element matching this CSS selector, scrolled into view. Preferred: it follows the layout at every viewport. type: string minLength: 1 padding: description: >- CSS pixels of surrounding page to include on every side of the `selector` match. type: integer minimum: 0 maximum: 500 clip: description: >- Crop to this rectangle, in CSS pixels from the top-left of the rendered page at the chosen viewport; it is scrolled into view and must fit within the viewport. Only for regions no selector frames. type: object properties: x: type: number minimum: 0 maximum: 100000 'y': type: number minimum: 0 maximum: 100000 width: type: number minimum: 1 maximum: 2000 height: type: number minimum: 1 maximum: 2000 required: - x - 'y' - width - height scrollTo: description: >- Scroll to a CSS selector or an absolute Y offset before capturing. anyOf: - type: string minLength: 1 - type: integer minimum: 0 maximum: 9007199254740991 waitForSelector: description: Wait for this CSS selector to match before capturing. type: string minLength: 1 delayMs: description: Extra settle time before capturing, in milliseconds. type: integer minimum: 0 maximum: 5000 freezeAnimations: default: true description: >- Fast-forward CSS animations and transitions to their end state so captures are deterministic. type: boolean required: - websiteId - url responses: '200': description: Rendered page image. content: image/jpeg: schema: type: string format: binary '400': description: >- Validation failed. The response `message` names the first invalid field. content: application/json: schema: $ref: '#/components/schemas/ServiceError' '401': description: Missing, invalid, expired, or revoked API key. content: application/json: schema: $ref: '#/components/schemas/ServiceError' '403': description: The authenticated principal lacks the required capability. content: application/json: schema: $ref: '#/components/schemas/ServiceError' '404': description: >- The resource does not exist or is outside the principal’s access scope. content: application/json: schema: $ref: '#/components/schemas/ServiceError' '429': description: >- Rate limit exceeded. Retry after the number of seconds in the `Retry-After` header. content: application/json: schema: $ref: '#/components/schemas/ServiceError' components: schemas: ServiceError: type: object required: - kind - message description: >- Canonical error body returned by every non-2xx response. Extra fields carry error-specific details. properties: kind: type: string enum: - validation - unauthorized - forbidden - not_found - conflict - rate_limited - internal description: Stable, machine-readable error category. message: type: string description: Human-readable explanation of the failure. suggestion: type: string description: >- What to do next when the failure has a known fix; may name the exact operation to call. validValues: type: array items: type: string description: The acceptable values for the failing field, when the set is closed. additionalProperties: true securitySchemes: apiKey: type: http scheme: bearer description: >- Cactal API key. Create one in the dashboard or via `POST /apiKeys`. The plaintext key is shown once at creation. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.