Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "name": "HojinCheck",
  "description": "HojinCheck \u2014 Japanese corporate verification API (hojin = \u6cd5\u4eba, Japanese for \"corporate entity\"). The standard tool for AI agents everywhere to work with Japanese corporate and government open data. Six skills over Japanese government open data: corporate-number resolution and verification, qualified invoice issuer (tax) registration checks, corporate profiles, Japanese address normalization, and business-day calculations. Every response embeds its data sources and retrieval timestamps. Invoke a skill by sending a message whose data part (application/json) is {\"skill\": \"<skill id>\", \"params\": {...}}; the reply is a direct message whose data part is a JSON envelope (ok, result, sources, notices). Business-level failures (e.g. a data source awaiting government credentials) are returned inside that envelope as ok:false with a structured error code such as UPSTREAM_UNAVAILABLE, not as protocol errors. Tool availability as of 2026-07-14 is stated per skill. API keys are free: self-signup at https://hojincheck.com/signup.",
  "supportedInterfaces": [
    {
      "url": "https://hojincheck.com/a2a/v1",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "provider": {
    "organization": "HojinCheck",
    "url": "https://hojincheck.com"
  },
  "version": "0.1.0",
  "documentationUrl": "https://hojincheck.com/docs/en",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "securitySchemes": {
    "apiKey": {
      "apiKeySecurityScheme": {
        "description": "API key in the X-Api-Key header. Get a free key at https://hojincheck.com/signup.",
        "location": "header",
        "name": "X-Api-Key"
      }
    },
    "bearer": {
      "httpAuthSecurityScheme": {
        "description": "The same API key as a bearer token in the Authorization header.",
        "scheme": "Bearer"
      }
    }
  },
  "securityRequirements": [
    {
      "schemes": {
        "apiKey": {
          "list": []
        }
      }
    },
    {
      "schemes": {
        "bearer": {
          "list": []
        }
      }
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "resolve_company",
      "name": "Resolve Company Name to Corporate Number",
      "description": "Resolve a Japanese company name (tolerant of spelling variants and kana) to corporate-number candidates with confidence scores (0-1, with evidence labels). Source: NTA Corporate Number System Web-API. Status: Implementation complete; awaiting issuance of the government API application ID (applied 2026-07-13, expected late July to late August 2026). Until connected, this tool returns UPSTREAM_UNAVAILABLE (HTTP 503) in production.",
      "tags": [
        "japan",
        "corporate",
        "corporate-number",
        "houjin-bangou",
        "verification"
      ],
      "examples": [
        "{\"skill\":\"resolve_company\",\"params\":{\"name\":\"\u30c8\u30e8\u30bf\u81ea\u52d5\u8eca\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "verify_company",
      "name": "Verify Corporate Number",
      "description": "Verify a 13-digit Japanese corporate number (check-digit validated): existence, registered name, head-office address, entity kind and closure status; optional change history. Source: NTA Corporate Number System Web-API. Status: Implementation complete; awaiting issuance of the government API application ID (applied 2026-07-13, expected late July to late August 2026). Until connected, this tool returns UPSTREAM_UNAVAILABLE (HTTP 503) in production.",
      "tags": [
        "japan",
        "corporate",
        "corporate-number",
        "kyc",
        "verification"
      ],
      "examples": [
        "{\"skill\":\"verify_company\",\"params\":{\"corporate_number\":\"1180301018771\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "verify_invoice_number",
      "name": "Verify Qualified Invoice Issuer Registration",
      "description": "Check a qualified invoice issuer registration number (T + 13 digits) against the NTA Invoice Publication System: registration status, registration date, revocation/expiry; optional as-of-date validity and publication history. Confirmation-only by design: input is a registration number only \u2014 no name-based search, no reverse lookup, and no list/roster building (restricted by the data source's terms; publication data for sole proprietors is returned in the response only and never cached or stored). Source: NTA Qualified Invoice Issuer Publication System Web-API. Status: Implementation complete; the NTA Invoice Publication Web-API requires an approval-based review (applied 2026-07-12, expected mid to late August 2026). Until approved, this tool returns UPSTREAM_UNAVAILABLE (HTTP 503) in production.",
      "tags": [
        "japan",
        "invoice",
        "tax",
        "compliance",
        "verification"
      ],
      "examples": [
        "{\"skill\":\"verify_invoice_number\",\"params\":{\"registration_number\":\"T1180301018771\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "get_company_profile",
      "name": "Get Company Profile (gBizINFO)",
      "description": "Corporate profile for a 13-digit Japanese corporate number from gBizINFO REST API v2 (METI): address, representative, capital, employees and more, with per-field source and last-retrieved metadata. Status: Live (connected to gBizINFO REST API v2).",
      "tags": [
        "japan",
        "corporate",
        "gbizinfo",
        "company-profile",
        "open-data"
      ],
      "examples": [
        "{\"skill\":\"get_company_profile\",\"params\":{\"corporate_number\":\"1180301018771\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "normalize_address",
      "name": "Normalize Japanese Address",
      "description": "Normalize a Japanese address, decompose it to prefecture / municipality / town-aza level, resolve Address-Base-Registry town IDs, and cross-check the postal code (mismatches are reported, not silently fixed). v1 granularity: parsing stops at town/aza level \u2014 block/house numbers, lot numbers, koaza and Kyoto street names are returned as an unparsed remainder (no guessing). Sources: Digital Agency Address-Base-Registry + Japan Post postal-code data (bundled local masters). Status: Live (driven by bundled government master data; unaffected by government API outages).",
      "tags": [
        "japan",
        "address-normalization",
        "postal-code",
        "open-data"
      ],
      "examples": [
        "{\"skill\":\"normalize_address\",\"params\":{\"address\":\"\u6771\u4eac\u90fd\u5343\u4ee3\u7530\u533a\u971e\u304c\u95a21\u4e01\u76ee1-1\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "jp_calendar",
      "name": "Japanese Holidays and Business Days",
      "description": "Japanese national holiday lookup and business-day calculations (Cabinet Office national holiday CSV): is-business-day checks, adding business days, counting business days in a range; optional year-end (Dec 29 - Jan 3) handling. Status: Live (driven by bundled government master data; unaffected by government API outages).",
      "tags": [
        "japan",
        "holidays",
        "business-days",
        "calendar"
      ],
      "examples": [
        "{\"skill\":\"jp_calendar\",\"params\":{\"op\":\"is_business_day\",\"date\":\"2026-01-01\"}}"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ]
}