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    "name": "Plumbline - Contractor License Checks",
    "summary_en": "Free contractor-license checks from official state records; a no-match never proves unlicensed.",
    "summary_zh": "免费的承包商执照查询服务，数据来自官方州记录；未匹配结果绝不证明其无照经营。",
    "description_en": "Plumbline provides contractor license checks against official state and local licensing records across dozens of US jurisdictions. The tool returns match, candidates, no_match_in_index (not a determination of unlicensure), or jurisdiction_not_covered. Coverage varies; the exact list is available via GET /v1/coverage. The service is free and requires no authentication.",
    "description_zh": "Plumbline 提供承包商执照查询服务，数据来自美国数十个州和地方官方的执照记录。该工具返回匹配、候选、索引中无匹配（不构成无照经营的判定）或辖区未覆盖等结果。覆盖范围会变化；确切列表可通过 GET /v1/coverage 获取。该服务免费且无需认证。",
    "provider_name": "ai.agentlookups",
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    "endpoint_url": "https://contractors.agentlookups.ai/mcp",
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      "method_version": "capability-evidence-v2",
      "capability_definition": "strong",
      "contract_completeness": "strong",
      "access_friction": "low",
      "operational_transparency": "partial",
      "evidence_strength": "protocol_inspected",
      "use_readiness": "ready_for_guidance",
      "reviewed_at": "2026-09-03T06:02:03.483Z"
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    "first_seen_at": "2026-09-03T02:49:29.343Z",
    "last_seen_at": "2026-09-03T06:02:02.823Z",
    "published_at": "2026-09-03T06:02:02.823Z",
    "created_at": "2026-09-03T02:49:29.343Z",
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    "public_url": "https://aiworkshub.io/resources/RES_C38AE208BB36",
    "distribution": {
      "canonical_identity": "https://registry.modelcontextprotocol.io/v0.1/servers/ai.agentlookups%2Fplumbline/versions/1.0.1",
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      "origins": [
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          "upstream_record_url": "https://registry.modelcontextprotocol.io/v0.1/servers/ai.agentlookups%2Fplumbline/versions/1.0.1",
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    "tools": [
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        "name": "check_contractor",
        "title_en": "Check Contractor License",
        "title_zh": "检查承包商执照",
        "description_en": "Check a contractor's license against official state and local licensing records covering dozens of US jurisdictions. The covered set grows over time; GET /v1/coverage on this host for the exact current list, and never assume from this description whether a jurisdiction is covered. Provide a license number or a business name, plus the jurisdiction. Returns match (the license record with status and provenance), candidates (disambiguate and call again; page with offset), no_match_in_index (NOT a determination of unlicensure), or jurisdiction_not_covered (with an official pointer URL for that jurisdiction; the response message states exactly what the link is, which for some jurisdictions is a consumer-protection or licensing-board page rather than a license lookup, so relay the message's wording and never present the link as a license lookup unless the message says it is one).",
        "description_zh": "根据美国数十个州和地方官方的执照记录检查承包商的执照。覆盖范围会随时间增长；请通过此主机的 GET /v1/coverage 获取确切的最新列表，切勿仅凭此描述假设某个辖区是否被覆盖。提供执照号码或企业名称，以及辖区。返回匹配（包含状态和来源的执照记录）、候选（用于消歧，可再次调用；使用 offset 分页）、索引中无匹配（不构成无照经营的判定）或辖区未覆盖（附有该辖区的官方指针 URL；响应消息会准确说明该链接是什么，对于某些辖区可能是消费者保护或执照委员会页面而非执照查询，因此请转述消息的措辞，除非消息说明是执照查询，否则切勿将该链接呈现为执照查询）。",
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              "description": "State or local jurisdiction code, e.g. \"CA\" (\"US-CA\" style also accepted) or \"NYC\". Coverage spans dozens of US jurisdictions; GET /v1/coverage for the exact current list.",
              "type": "string"
            },
            "license": {
              "description": "License number, e.g. \"1000002\"",
              "type": "string"
            },
            "name": {
              "description": "Business name, e.g. \"Bayside Plumbing\"",
              "type": "string"
            },
            "offset": {
              "description": "Pagination offset into the candidates list, default 0. Use with total_candidates from a prior call to page through large candidate sets.",
              "type": "integer"
            }
          },
          "type": "object"
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        "output_schema": {},
        "unit_kind": "mcp_tool",
        "effect": "unknown",
        "open_world": false,
        "idempotency": "idempotent",
        "confirmation": "explicit policy",
        "evidence_ids": [
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        "runtime_auth": {},
        "pricing": {},
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      "method_version": "capability-evidence-v2",
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        "identity": "verified",
        "source": "verified",
        "connectivity": "verified",
        "contract": "strong",
        "safe_use": "untested",
        "real_use": "unobserved"
      },
      "assessment": {
        "capability_definition": "strong",
        "contract_completeness": "strong",
        "access_friction": "low",
        "operational_transparency": "partial",
        "evidence_strength": "protocol_inspected",
        "use_readiness": "ready_for_guidance"
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      "profile": {
        "capabilities": [
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            "weight": 100,
            "confidence": 90,
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        "domains": [
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            "id": "public-sector",
            "weight": 100,
            "confidence": 90,
            "evidence_ids": [
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        "workflow_roles": [
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          "analyze"
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          "kind": "mcp_tool",
          "capability_id": "data.lookup",
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          "idempotency": "idempotent",
          "confirmation": "explicit policy",
          "input_contract": "typed",
          "output_contract": "typed_envelope_dynamic_result",
          "accepts": [
            "license number",
            "business name",
            "jurisdiction code",
            "pagination offset"
          ],
          "produces": [
            "license record",
            "candidate list",
            "no_match_in_index indicator",
            "jurisdiction_not_covered indicator"
          ],
          "runtime_auth": {},
          "pricing": {},
          "evidence_ids": [
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        "dependencies": []
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      "trust": {
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          "payload": {}
        },
        {
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          "source": "https://contractors.agentlookups.ai/mcp#tools/list",
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          "observed_at": "2026-09-03T05:53:58.663Z",
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}