Agentation is an agent-agnostic visual feedback tool. Click elements on your page, add notes, and copy structured output that helps AI coding agents find the exact code you're referring to.

Install

npm install agentation -D

Usage

import { Agentation } from 'agentation';

function App() {
  return (
    <>
      <YourApp />
      <Agentation />
    </>
  );
}

The toolbar appears in the bottom-right corner. Click to activate, then click any element to annotate it.

Features

• Click to annotate – Click any element with automatic selector identification
• Text selection – Select text to annotate specific content
• Multi-select – Drag to select multiple elements at once
• Area selection – Drag to annotate any region, even empty space
• Animation pause – Freeze all animations (CSS, JS, videos) to capture specific states
• Structured output – Copy markdown with selectors, positions, and context
• Programmatic access – Callback prop for direct integration with tools
• Dark/light mode – Toggle in settings, persists to localStorage
• Zero dependencies – Pure CSS animations, no runtime libraries

Props

| Prop | Type | Default | Description | |------|------|---------|-------------| | onAnnotationAdd | (annotation: Annotation) => void | - | Called when an annotation is created | | onAnnotationDelete | (annotation: Annotation) => void | - | Called when an annotation is deleted | | onAnnotationUpdate | (annotation: Annotation) => void | - | Called when an annotation is edited | | onAnnotationsClear | (annotations: Annotation[]) => void | - | Called when all annotations are cleared | | onCopy | (markdown: string) => void | - | Callback with markdown output when copy is clicked | | onSubmit | (output: string, annotations: Annotation[]) => void | - | Called when "Send Annotations" is clicked | | copyToClipboard | boolean | true | Set to false to prevent writing to clipboard | | endpoint | string | - | Server URL for Agent Sync (e.g., "http://localhost:4747") | | sessionId | string | - | Pre-existing session ID to join | | onSessionCreated | (sessionId: string) => void | - | Called when a new session is created | | webhookUrl | string | - | Webhook URL to receive annotation events |

Programmatic Integration

Use callbacks to receive annotation data directly:

import { Agentation, type Annotation } from 'agentation';

function App() {
  const handleAnnotation = (annotation: Annotation) => {
    // Structured data - no parsing needed
    console.log(annotation.element);      // "Button"
    console.log(annotation.elementPath);  // "body > div > button"
    console.log(annotation.boundingBox);  // { x, y, width, height }
    console.log(annotation.cssClasses);   // "btn btn-primary"

    // Send to your agent, API, etc.
    sendToAgent(annotation);
  };

  return (
    <>
      <YourApp />
      <Agentation
        onAnnotationAdd={handleAnnotation}
        copyToClipboard={false}  // Don't write to clipboard
      />
    </>
  );
}

Annotation Type

type Annotation = {
  id: string;
  x: number;                    // % of viewport width
  y: number;                    // px from top of document (absolute) OR viewport (if isFixed)
  comment: string;              // User's note
  element: string;              // e.g., "Button"
  elementPath: string;          // e.g., "body > div > button"
  timestamp: number;

  // Optional metadata (when available)
  selectedText?: string;
  boundingBox?: { x: number; y: number; width: number; height: number };
  nearbyText?: string;
  cssClasses?: string;
  nearbyElements?: string;
  computedStyles?: string;
  fullPath?: string;
  accessibility?: string;
  isMultiSelect?: boolean;
  isFixed?: boolean;
};

Note: This is a simplified type. The full type includes additional fields for Agent Sync (url, status, thread, reactComponents, etc.). See agentation.dev/schema for the complete schema.

How it works

Agentation captures class names, selectors, and element positions so AI agents can grep for the exact code you're referring to. Instead of describing "the blue button in the sidebar," you give the agent .sidebar > button.primary and your feedback.

Requirements

• React 18+
• Desktop browser (mobile not supported)

Docs

Full documentation at agentation.dev

License

© 2026 Benji Taylor

Licensed under PolyForm Shield 1.0.0