plugin.json

{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "refern-notan",
  "version": "1.0.0",
  "description": "Turn an image into a notan, a two to five value study of its light and dark shapes, and adjust it in an interactive generator.",
  "author": {
    "name": "refern",
    "email": "jackson@refern.app",
    "url": "https://www.refern.app"
  },
  "homepage": "https://www.refern.app/tools/notan-generator",
  "keywords": [
    "notan",
    "value study",
    "art",
    "painting",
    "drawing",
    "reference"
  ],
  "extensions": {
    "com.openai": {
      "interface": {
        "displayName": "refern Notan Generator",
        "shortDescription": "Turn images into notan studies",
        "longDescription": "The refern notan generator turns an image you attach into a notan, a value study for artists: the picture reduced to two to five flat values that show its big light and dark shapes. Artists use a notan to check the value design of a painting, drawing, or photo, and to see why a picture reads well or poorly from a distance.\n\nAttach an image and ask for a notan or a value study. The generator opens in the chat with your image. You can:\n\n- Switch between 2, 3, 4, and 5 values.\n- Move the split between light and dark, or let the generator place it automatically.\n- Simplify the shapes, like squinting, so small details merge into large masses.\n- Compare the notan with the original side by side or with a divider, and flip the image to check the design.\n- Save the notan as a PNG.\n\nYou can also choose, drop, or paste another image into the generator at any time. The notan is made on your device. An image you attach is resized in memory on refern's server and is not stored.\n\nMade by refern, a desktop app for collecting and organizing visual references.",
        "developerName": "refern",
        "category": "Creativity",
        "capabilities": [
          "Make a 2 to 5 value notan from an image",
          "Adjust the value splits and shape simplification",
          "Compare the notan with the original image",
          "Save the notan as a PNG"
        ],
        "websiteURL": "https://www.refern.app/tools/notan-generator",
        "supportURL": "https://www.refern.app/contact",
        "privacyPolicyURL": "https://www.refern.app/privacy",
        "termsOfServiceURL": "https://www.refern.app/terms",
        "defaultPrompt": [
          "Make a notan of this image.",
          "Check the value design of my painting.",
          "Show the big light and dark shapes in this photo."
        ],
        "brandColor": "#171717",
        "brandColorDark": "#FAFAF9",
        "composerIcon": "./assets/logo.png",
        "logo": "./assets/logo.png",
        "screenshots": [
          "./assets/screenshot-1.png",
          "./assets/screenshot-2.png",
          "./assets/screenshot-3.png"
        ]
      },
      "review": {
        "test_cases": {
          "positive": [
            {
              "description": "Two-value notan of an attached photo",
              "prompt": "Make a notan of this image.",
              "file_attachment_urls": [
                "https://www.refern.app/refs/sunset/sea-rock-sunburst.webp"
              ],
              "tools_triggered": "notan.open",
              "expected_behavior": "Calls notan.open with the attached image. The notan generator opens in the chat with the photo and its two-value notan side by side. The reply says the user can change the number of values, the splits, and simplification, and save a PNG."
            },
            {
              "description": "Value check of an attached painting",
              "prompt": "Can you check the values in my painting? I want to see if the light and dark shapes read clearly.",
              "file_attachment_urls": [
                "https://www.refern.app/refs/art/lightning-swordsman.webp"
              ],
              "tools_triggered": "notan.open",
              "expected_behavior": "Calls notan.open with the attached painting. The generator opens with the painting and its notan. The user can switch to 3, 4, or 5 values and adjust the splits in the generator."
            },
            {
              "description": "Squint test on a reference photo",
              "prompt": "Squint at this reference for me and show the big shapes.",
              "file_attachment_urls": [
                "https://www.refern.app/refs/city/sf-street-overlook.webp"
              ],
              "tools_triggered": "notan.open",
              "expected_behavior": "Calls notan.open with the attached photo. The generator opens with the photo and its notan; raising Simplify merges small details into large shapes."
            },
            {
              "description": "Value study with a requested number of values",
              "prompt": "Show me a 3-value study of this image.",
              "file_attachment_urls": [
                "https://www.refern.app/refs/sunset/sea-rock-sunburst.webp"
              ],
              "tools_triggered": "notan.open",
              "expected_behavior": "Calls notan.open with the attached image. The generator opens on two values; the reply tells the user to select 3 in Values, which shows dark, mid, and light shapes."
            },
            {
              "description": "Open the generator without an image",
              "prompt": "Open the refern notan generator.",
              "tools_triggered": "notan.open",
              "expected_behavior": "Calls notan.open without an image. The generator opens on its sample photo, and the reply says the user can choose, drop, or paste an image into it."
            }
          ],
          "negative": [
            {
              "description": "Question about the term only; answer in text without opening the generator, since no notan of an image was asked for",
              "prompt": "What is a notan in art?"
            },
            {
              "description": "Request to create new artwork; the tool only analyzes an existing image, so it should not be called",
              "prompt": "Draw me a mountain landscape in a black and white notan style."
            },
            {
              "description": "Background removal is not a value study; the tool should not be called",
              "prompt": "Remove the background from this photo.",
              "file_attachment_urls": [
                "https://www.refern.app/refs/city/sf-street-overlook.webp"
              ]
            }
          ]
        },
        "demo_recording_url": "https://youtu.be/5aKzv-cdnUU",
        "commerce": false
      },
      "publication": {
        "release_notes": "Initial release: the refern notan generator in ChatGPT and Codex."
      },
      "apps": "./.app.json"
    }
  }
}