plugin.json

{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "signal-by-stackenhance",
  "version": "1.0.0",
  "description": "How often ecommerce brands send marketing email, from StackEnhance Signal's archive of 750+ online stores.",
  "author": {
    "name": "Stack Enhance AB",
    "email": "support@stackenhance.com",
    "url": "https://stackenhance.com"
  },
  "homepage": "https://stackenhance.com/signal",
  "keywords": [
    "email marketing",
    "competitor analysis",
    "ecommerce",
    "newsletters",
    "CRM"
  ],
  "extensions": {
    "com.openai": {
      "interface": {
        "displayName": "Signal by StackEnhance",
        "shortDescription": "What brands email, and when",
        "longDescription": "Signal by StackEnhance answers questions about how often ecommerce brands send marketing email. It draws on StackEnhance Signal's archive of marketing emails from 750+ online stores, mostly in Sweden, Norway, Denmark, Finland and Germany. Ask how many emails a brand sent in a month, what it sent last week, how often it currently emails its customers, or which brands in a market email the most. Every answer links to the brand's public page on stackenhance.com, where the deeper analysis lives. Counts are de-duplicated marketing sends; welcome, birthday and transactional emails are excluded. For a recent period the app lists the send dates and may quote up to two subject lines that are already public on the brand's page; the full campaigns, all subject lines, offers and creative analysis stay in Signal. Signal has no open, click or revenue data. Read-only; no account needed.",
        "developerName": "StackEnhance",
        "category": "Data & Analytics",
        "capabilities": [
          "Look up a brand's email frequency",
          "List a brand's recent sends",
          "Rank brands in a market"
        ],
        "websiteURL": "https://stackenhance.com/signal",
        "supportURL": "https://stackenhance.com/help/signal-in-chatgpt-and-claude",
        "privacyPolicyURL": "https://stackenhance.com/privacy",
        "termsOfServiceURL": "https://stackenhance.com/terms",
        "defaultPrompt": [
          "What did Newport send last week?",
          "How often does Boozt email its customers in Sweden?",
          "Which brands email most frequently in Swedish ecommerce?"
        ],
        "brandColor": "#0B0B0F",
        "brandColorDark": "#C6FF3D",
        "composerIcon": "./assets/icon.png",
        "logo": "./assets/logo.png"
      },
      "review": {
        "test_cases": {
          "positive": [
            {
              "description": "Monthly count per market",
              "prompt": "How many emails did Newport send in August 2026?",
              "tools_triggered": "get_brand_email_frequency",
              "expected_behavior": "Gives one count per Newport market (SE, NO as Newporthome, DK, FI, DE, NL) for August 2026 with the send dates, each with a link to that market's brand page."
            },
            {
              "description": "Current frequency of one brand",
              "prompt": "How often does Boozt email its customers in Sweden?",
              "tools_triggered": "get_brand_summary",
              "expected_behavior": "States Boozt.com (SE)'s current emails per week (90-day average), since when Signal has observed it, and links its brand page."
            },
            {
              "description": "Rank brands in a market",
              "prompt": "Which brands email most frequently in Swedish ecommerce?",
              "tools_triggered": "find_brands",
              "expected_behavior": "Lists up to 10 SE brands ranked by emails per week, each with a brand-page link."
            },
            {
              "description": "Recent sends of one brand",
              "prompt": "What did Newport send last week in Sweden?",
              "tools_triggered": "get_brand_email_frequency",
              "expected_behavior": "Resolves last week to the previous Monday-Sunday and gives Newport (SE)'s send count and send dates, plus at most two subject lines that are already shown on the brand's public page, and links the page for the full campaigns."
            },
            {
              "description": "Compare two markets",
              "prompt": "Does Newport email more in Norway or in Denmark?",
              "tools_triggered": "get_brand_summary",
              "expected_behavior": "Compares the two markets' current emails per week (Norway is the Newporthome storefront) and links both brand pages."
            }
          ],
          "negative": [
            {
              "description": "Content generation",
              "prompt": "Write a welcome email for my online store."
            },
            {
              "description": "Write action",
              "prompt": "Send a promotional email to my customers about our sale."
            },
            {
              "description": "Unrelated question",
              "prompt": "What is the weather in Stockholm tomorrow?"
            }
          ]
        },
        "commerce": false,
        "commerce_description": "This app does not sell products or process payments. It only reads aggregated, public facts about brands' marketing email.",
        "demo_recording_url": "https://youtu.be/2o7xKYpBYjc"
      },
      "apps": "./.app.json"
    }
  }
}