OpenAccountants

{
  "schema_version": "0.1",
  "name": "OpenAccountants",
  "description": "Accountant-verified, source-cited tax & accounting skills for AI agents \u2014 income tax, corporate tax, VAT/GST, payroll, formation, crypto, and cross-border, across 190+ jurisdictions (every country + US state + Canadian province). Every figure traces to a cited source; verified skills carry a named, credentialed accountant.",
  "provider": {
    "organization": "OpenAccountants",
    "url": "https://www.openaccountants.com"
  },
  "url": "https://www.openaccountants.com/api/mcp",
  "documentation_url": "https://www.openaccountants.com/for-developers",
  "icon_url": "https://www.openaccountants.com/logo-circle.png",
  "version": "1",
  "protocol": "mcp",
  "trust": {
    "accountant_verified": true,
    "source_cited": true,
    "anti_fabrication": "States only figures and citations present in a loaded skill; says 'not covered' rather than inventing a rate, citation, or section.",
    "tiers": [
      {
        "tier": 1,
        "label": "Accountant-verified",
        "meaning": "every fact checked and signed by a credentialed accountant"
      },
      {
        "tier": 2,
        "label": "Source-cited draft",
        "meaning": "cited to primary sources, not yet accountant-reviewed"
      }
    ],
    "accountant_verified_skills": 116,
    "source_cited_skills": 1005,
    "total_published_skills": 1121,
    "named_verifiers": 17,
    "jurisdictions_covered": 193
  },
  "interface": {
    "transport": "streamable_http",
    "endpoint": "https://www.openaccountants.com/api/mcp",
    "entrypoint": "Call start({ intent, jurisdiction }) to scope, then get_skill({ slug }) to load authoritative content. The skill content is the authority \u2014 never compute from training data."
  },
  "authentication": {
    "read": "open \u2014 discover and compute, no auth",
    "write": "oauth2 \u2014 contributing/verifying skills (credentialed accountants only)"
  },
  "skills": [
    {
      "id": "income-tax",
      "name": "Personal & corporate income tax",
      "tags": [
        "income tax",
        "brackets",
        "deductions",
        "credits",
        "filing",
        "1040",
        "1120"
      ]
    },
    {
      "id": "vat-gst",
      "name": "VAT / GST / sales tax",
      "tags": [
        "VAT",
        "GST",
        "reverse charge",
        "OSS",
        "place of supply",
        "registration threshold"
      ]
    },
    {
      "id": "payroll",
      "name": "Payroll & withholding",
      "tags": [
        "PAYE",
        "withholding",
        "social contributions",
        "net salary"
      ]
    },
    {
      "id": "cross-border",
      "name": "Cross-border & expat",
      "tags": [
        "treaty",
        "FEIE",
        "FTC",
        "FBAR",
        "FATCA",
        "exit tax",
        "non-dom",
        "Pillar Two"
      ]
    },
    {
      "id": "formation",
      "name": "Entity formation & choice",
      "tags": [
        "LLC",
        "S-corp",
        "C-corp",
        "PTE",
        "incorporation"
      ]
    },
    {
      "id": "crypto",
      "name": "Crypto / digital-asset tax",
      "tags": [
        "CGT",
        "staking",
        "airdrops",
        "DeFi",
        "derivatives"
      ]
    }
  ],
  "coverage": {
    "jurisdictions": "190+ (every country, US state, Canadian province)",
    "freshness": "annual rate refresh + post-legislative updates"
  },
  "related": {
    "mcp_server_card": "https://www.openaccountants.com/.well-known/mcp/server-card.json",
    "homepage": "https://www.openaccountants.com"
  },
  "important_notes": [
    "All outputs are working papers, not filed returns.",
    "No client-accountant relationship is created by reading or applying these skills."
  ]
}