plugin.json

{
  "$schema": "https://agent-plugins.org/schemas/1.0.0/plugin.schema.json",
  "name": "whizi-canadian-tax",
  "version": "1.0.0",
  "description": "Answers Canadian tax questions with current CRA figures for 2025 and 2026: deadlines, limits, rates, payroll, GST/HST, corporate and personal tax. Read only, no account needed.",
  "author": {
    "name": "Whizi",
    "email": "whizihelp@gmail.com",
    "url": "https://whizi.io"
  },
  "homepage": "https://whizi.io/tax/",
  "license": "UNLICENSED",
  "keywords": [
    "canadian tax",
    "cra",
    "payroll",
    "gst hst",
    "corporate tax",
    "accounting",
    "cpa"
  ],
  "extensions": {
    "com.openai": {
      "interface": {
        "displayName": "Whizi Canadian Tax",
        "shortDescription": "CRA figures and deadlines",
        "longDescription": "Whizi Canadian Tax answers the Canadian tax questions accountants and business owners look up every week, with the current figures from canada.ca.\n\nAsk about a CRA deadline, limit, rate or form and you get a card with the headline figure, a short answer, the key numbers beside it and the date it was last checked. It covers 400 questions across the 2025 and 2026 tax years: payroll (CPP, CPP2, EI, remittance due dates, T4 and T4A slips), personal tax (T1 deadlines, brackets for every province, credits, RRSP, TFSA, FHSA, RESP and RRIF rules), corporate tax (T2 deadlines, the small business deduction, CCPC rules, dividends, GRIP and RDTOH), GST/HST, trusts and estates, non residents and self employed income.\n\nEvery answer comes from a Whizi page built on canada.ca and the Income Tax Act, and each card links to the full answer with its worked examples and every source.\n\nIt is read only. It needs no account and stores nothing you ask. When a question falls outside what it covers, it says so instead of guessing.",
        "developerName": "Whizi",
        "category": "Finance",
        "capabilities": [
          "Read"
        ],
        "websiteURL": "https://whizi.io/tax/",
        "supportURL": "https://whizi.io/support",
        "privacyPolicyURL": "https://whizi.io/privacypolicy",
        "termsOfServiceURL": "https://whizi.io/termsofservice",
        "defaultPrompt": [
          "What are the CPP and CPP2 maximums for 2026?",
          "When is the T1 filing deadline for 2026 returns?",
          "What's the TFSA overcontribution penalty?"
        ],
        "brandColor": "#D52B1E",
        "brandColorDark": "#E5483C",
        "composerIcon": "./assets/composer-icon.png",
        "logo": "./assets/logo.png",
        "screenshots": [
          "./assets/screenshot-1-cpp.png",
          "./assets/screenshot-2-t1-deadline.png",
          "./assets/screenshot-3-departure-tax.png"
        ]
      },
      "publication": {
        "release_notes": "First release. One read only tool, answer_canadian_tax_question, that matches a Canadian tax question to one of 400 answers and shows it as a card with the key figures."
      },
      "review": {
        "demo_recording_url": "https://whizi.io/plugin/canadian-tax-demo.mp4",
        "test_cases": {
          "positive": [
            {
              "description": "Payroll maximum for a tax year",
              "prompt": "What are the CPP and CPP2 maximums for 2026?",
              "tools_triggered": "answer_canadian_tax_question",
              "expected_behavior": "Calls answer_canadian_tax_question. The card shows $4,230.45 as the maximum employee CPP for 2026, a short answer, and rows for CPP2 ($416), the sole proprietor CPP ($8,460.90) and the YMPE ($74,600), with a button to the full answer."
            },
            {
              "description": "Filing deadline",
              "prompt": "When is the T1 due for 2026?",
              "tools_triggered": "answer_canadian_tax_question",
              "expected_behavior": "Calls answer_canadian_tax_question. The card shows April 30, 2026 as the filing and payment deadline for 2025 returns, June 15, 2026 as the filing date for business filers, and April 30, 2027 for 2026 returns."
            },
            {
              "description": "Penalty rule",
              "prompt": "My client went over their TFSA limit. What's the penalty?",
              "tools_triggered": "answer_canadian_tax_question",
              "expected_behavior": "Calls answer_canadian_tax_question. The card explains the 1% per month tax on the highest excess amount and lists the related figures from the TFSA overcontribution page."
            },
            {
              "description": "Provincial rate",
              "prompt": "What is the corporate tax rate in Ontario?",
              "tools_triggered": "answer_canadian_tax_question",
              "expected_behavior": "Calls answer_canadian_tax_question. The card shows the combined federal and Ontario rates for 2026: 26.5% general, 25% manufacturing and processing, 50.17% on CCPC investment income, and the small business rate of 12.2% to June 30 and 11.2% from July 1."
            },
            {
              "description": "Rule without a single figure",
              "prompt": "How does departure tax work when my client leaves Canada?",
              "tools_triggered": "answer_canadian_tax_question",
              "expected_behavior": "Calls answer_canadian_tax_question. The card explains the deemed disposition at fair market value, that 50% of the gain is taxed, and lists the $16,500 security threshold, the $25,000 T1161 reporting threshold and Form T1244."
            }
          ],
          "negative": [
            {
              "description": "Tax question for another country. The tool only covers Canadian tax, so ChatGPT should answer without it.",
              "prompt": "What are the US federal income tax brackets for 2026?"
            },
            {
              "description": "Unrelated request. Nothing about tax, so the tool should not be called.",
              "prompt": "What's a good recipe for banana bread?"
            },
            {
              "description": "Asks for a tax document to be written, not a figure or rule looked up. ChatGPT should draft it directly.",
              "prompt": "Write an engagement letter for a new bookkeeping client."
            }
          ]
        }
      },
      "apps": "./.app.json"
    }
  }
}