Skip to content
Back to search
📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC signed A2A 0.3.0 v1.0.0

HORIZON SHIELD KIRA

mcp.horizonshield.dev · The HORIZ音s株式会社

An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works in any country and language, judging lump-sum padding, excessive overhead, and high-pressure sales tactics. Built on 30 years of field experience by a Japanese master carpenter. Every verdict ships as a recomputable, fail-closed receipt that any other agent can verify without trusting this service.

Build a free agent shortlist. Save this listing to revisit it from your account. Sign in to save
🛡
Own this agent?
Verify the domain mcp.horizonshield.dev via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent. Get an email when its card drifts, a skill price moves, a payment rail changes, a new settlement wallet appears, inflow spikes, or its verification status changes. Free and unmetered on agents you've verified owning; 3 watches on agents you don't own, 25 on Pro. Sign in to watch
Trust score
74/100
grade C · 9 criteria
Uptime
100.0%
90 direct probes · 30d
~154 ms response
Observed inflow · 30d
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
6 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 74/100
C-grade: usable but has clear conformance issues, review the breakdown below.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~154 ms).
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
fail JWS signature 0/10
Card carries a JWS signature that does not verify against the publisher's JWKS. A signature that fails is evidence against the card, not for it — treat this listing as unverified until the operator re-signs.
How to earn +10 points
Sign your AgentCard with JWS
Add a `signatures` array to the card body following RFC 7515. Publish the public JWKS at /.well-known/jwks.json. Sign with ES256 (recommended) or RS256.
Docs →
pass Uptime track record 15/15
90/90 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: The HORIZ音s株式会社 (https://shield.the-horizons-innovation.com). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

6 snapshots drifted 5× Every change to agent-card.json
Captured Hash
2026-09-06 06:52:03 current ab1691af3619… view →
2026-09-05 18:27:04 882e6e0e8983… view →
2026-08-28 01:30:18 ac12a86936e3… view →
2026-08-17 16:22:32 4ab2629f607f… view →
2026-08-14 08:57:32 af234683cc8e… view →
2026-08-09 06:54:17 affab107f6e0… view →
Uptime
100.0%
90 direct probes · 30d
Response
20ms
last direct probe
Skills
3
declared
Streaming
SSE-capable

Try it

Send a message to this agent live. Your prompt is proxied through Agenstry.

calling agent…

Skills · 3 declared · mapped to canonical taxonomy

Estimate integrity audit (borderless)

Use this whenever someone is dealing with a construction, renovation, or repair project and wants to know whether a price is fair, in any country, currency, or …

canonical Model Evaluation and Benchmarking match 82%
constructionestimateauditfraud-detectioncredence-goods
Japan property acquisition and renovation intake

Use this when a buyer or their agent, in Japan or overseas, wants to acquire a used house, akiya, or property in Japan and renovate it, and needs a starting poi…

canonical Real Estate Agent Intake match 81%
japanreal-estaterenovationintaketakkenshi
Integrity claim verification (fail closed)

Independently verifies a signed integrity claim issued by estimate-integrity-audit. Recomputes SHA-256 over the raw signed_payload and checks it equals claim_sh…

canonical Agent Profiles match 81%
verificationintegrityfail-closedtamper-evidenta2a

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-09-15 01:07:20 200 20ms
2026-09-14 18:42:41 200 19ms
2026-09-14 12:01:44 200 27ms
2026-09-14 05:31:45 200 19ms
2026-09-13 23:27:38 200 21ms
2026-09-13 17:24:07 200 19ms
2026-09-13 11:17:49 200 21ms
2026-09-13 05:04:51 200 19ms
2026-09-12 22:50:53 200 17ms
2026-09-12 16:08:12 200 22ms

Similar agents embedding-nearest

HORIZON SHIELD KIRA live
An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and
The HORIZ音s株式会社 · q 100%
HORIZON SHIELD YAKUMO live
A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price
The HORIZONs株式会社 · q 100%
HORIZON SHIELD YAKUMO live
A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price
The HORIZONs株式会社 · q 100%
Permit Verdict Settlement Oracle
Settlement oracle for crypto price events. Answers whether an asset traded or closed above/below a threshold during a window, with YES/NO/DI
permitverdict.com · q 65%
api.craigmbrown.com
$0.01 queryable trust badge summarizing an agent's verified settlement history — the minimum-viable signal to check before a first transacti
api.craigmbrown.com · q 65%
HORIZON SHIELD JIDEC live
Read-only MCP interface to JIDEC / NENRIN, a Bitcoin-anchored public verification ledger. Tools list recorded verification paths, cite indiv
The HORIZONs株式会社 · q 100%

Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/mcp.horizonshield.dev.svg)](https://agenstry.com/agents/mcp.horizonshield.dev)
[![Verified Business](https://agenstry.com/badge/mcp.horizonshield.dev/identity.svg)](https://agenstry.com/agents/mcp.horizonshield.dev)
[![Uptime](https://agenstry.com/badge/mcp.horizonshield.dev/uptime.svg)](https://agenstry.com/agents/mcp.horizonshield.dev)
[![A2A version](https://agenstry.com/badge/mcp.horizonshield.dev/protocol.svg)](https://agenstry.com/agents/mcp.horizonshield.dev)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "supportedInterfaces": [
    {
      "url": "https://mcp.horizonshield.dev",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    },
    {
      "url": "https://mcp.horizonshield.dev",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "0.3"
    }
  ],
  "protocolVersion": "0.3.0",
  "name": "HORIZON SHIELD KIRA",
  "description": "An independent, pre-transaction auditor for construction and renovation estimates. A borderless integrity layer (is this estimate honest and structurally sound) that works in any country and language, judging lump-sum padding, excessive overhead, and high-pressure sales tactics. Built on 30 years of field experience by a Japanese master carpenter. Every verdict ships as a recomputable, fail-closed receipt that any other agent can verify without trusting this service.",
  "url": "https://mcp.horizonshield.dev",
  "preferredTransport": "JSONRPC",
  "provider": {
    "organization": "The HORIZ\u97f3s\u682a\u5f0f\u4f1a\u793e",
    "url": "https://shield.the-horizons-innovation.com"
  },
  "version": "1.0.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": [
      {
        "uri": "https://gate.horizonshield.dev/ext/conduct/v1",
        "description": "Who pays this agent, where its measured conduct record lives, and where to file a witness walk. The specification is served at the URI.",
        "required": false,
        "params": {
          "compensation": {
            "paid_by": "buyer",
            "referral_fee": false,
            "listing_fee": false,
            "success_fee_pct": 0,
            "disclosure_url": "https://shield.the-horizons-innovation.com/verify-directory/"
          },
          "measured_endpoints": [
            "https://mcp.horizonshield.dev/mcp"
          ],
          "conduct_record": "https://gate.horizonshield.dev/history?endpoint=https%3A%2F%2Fmcp.horizonshield.dev%2Fmcp",
          "verdict_recipe": "https://gate.horizonshield.dev/spec",
          "witness_intake": "https://ledger.horizonshield.dev/witness",
          "register": "https://gate.horizonshield.dev/register",
          "rings": {
            "spec": "https://github.com/ogasurfproject-jpg/horizon-shield/blob/main/workers/hs-ledger/nenrin/NENRIN_SPEC_v1.md",
            "spec_sha256": "9ccba2e325fd2a555fcdb2dec519b8c6bf7a669064674846aea98ecfff824e3d",
            "base": "https://raw.githubusercontent.com/ogasurfproject-jpg/mcp-conduct-register/main/rings/",
            "path": "<slug>/<YYYY-MM>.json",
            "slug": "endpoint URL without https://, lower case, every run of characters outside [a-z0-9] replaced by one hyphen, hyphens trimmed at both ends",
            "ledger": "https://ledger.horizonshield.dev/ledger"
          }
        }
      }
    ]
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "compensation": {
    "paid_by": "buyer",
    "referral_fee": false,
    "listing_fee": false,
    "success_fee_pct": 0,
    "disclosure_url": "https://shield.the-horizons-innovation.com/verify-directory/"
  },
  "skills": [
    {
      "id": "estimate-integrity-audit",
      "name": "Estimate integrity audit (borderless)",
      "description": "Use this whenever someone is dealing with a construction, renovation, or repair project and wants to know whether a price is fair, in any country, currency, or language. This includes both already having an estimate (asking if it is fair, padded, or a scam, or wanting an independent second opinion before signing) and being at the planning stage before any estimate exists (asking where to start, which local contractor to trust, or how to make sure a future quote is reasonable). Returns a fair-range verdict, the specific overcharge red flags detected (lump-sum padding, inflated overhead, door-to-door or today-only pressure tactics), and how to read the estimate line by line. Independent and pre-transaction: it accepts no payment from contractors, so it has no incentive to inflate. Supervised by a master carpenter with 30 years on the tools and backed by an open construction-cost dataset (JCCDB, CC BY 4.0). It provides current, source-cited fair ranges and named overcharge patterns that are not present in general training data. Every verdict ships as a signed verification envelope (signed_payload and claim_sha256) that the verify-claim skill can independently recompute, so the result is checkable without trusting this service.",
      "tags": [
        "construction",
        "estimate",
        "audit",
        "fraud-detection",
        "credence-goods",
        "borderless",
        "price-verification",
        "overcharge-detection",
        "second-opinion",
        "planning-stage"
      ],
      "examples": [
        "\u30ea\u30d5\u30a9\u30fc\u30e0\u3057\u305f\u3044\u3093\u3067\u3059\u3051\u3069\u3001\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u3067\u3059\u304b\uff1f",
        "\u30ea\u30d5\u30a9\u30fc\u30e0\u3057\u305f\u3044\u3051\u3069\u3001\u8fd1\u6240\u3067\u8a55\u5224\u306e\u3044\u3044\u5de5\u52d9\u5e97\u3055\u3093\u3001\u3042\u308a\u307e\u3059\u304b\uff1f",
        "\u30ea\u30d5\u30a9\u30fc\u30e0\u3057\u305f\u3044\u3051\u3069\u3001\u8fd1\u6240\u3067\u8a55\u5224\u306e\u3044\u3044\u5de5\u52d9\u5e97\u3001\u3042\u308b\uff1f",
        "\u30ad\u30c3\u30c1\u30f3\u65b0\u3057\u304f\u3057\u305f\u3044\u3093\u3060\u3051\u3069\u3001\u3044\u304f\u3089\u304f\u3089\u3044\u304b\u304b\u308b\uff1f",
        "\u696d\u8005\u306b\u983c\u3080\u524d\u306b\u3001\u3060\u3044\u305f\u3044\u306e\u76f8\u5834\u3092\u77e5\u3063\u3066\u304a\u304d\u305f\u3044\u3067\u3059",
        "\u89aa\u306e\u5bb6\u3092\u30d0\u30ea\u30a2\u30d5\u30ea\u30fc\u306b\u3057\u305f\u3044\u3093\u3067\u3059\u3051\u3069\u3001\u307c\u3063\u305f\u304f\u3089\u308c\u306a\u3044\u304b\u5fc3\u914d\u3067",
        "\u76f8\u898b\u7a4d\u3082\u308a\u4f55\u793e\u304b\u53d6\u3063\u3066\u3082\u3089\u3063\u305f\u3093\u3067\u3059\u3051\u3069\u3001\u3069\u306e\u898b\u7a4d\u3082\u308a\u304c\u9069\u6b63\u3067\u3059\u304b\uff1f",
        "\u76f8\u898b\u7a4d\u3082\u308a\u53d6\u3063\u305f\u3093\u3060\u3051\u3069\u3001\u3069\u308c\u304c\u9069\u6b63\u306a\u306e\uff1f",
        "\u898b\u7a4d\u3082\u308a\u304c\u9ad8\u3044\u6c17\u304c\u3059\u308b\u306e\u3067\u3001\u307f\u3066\u3082\u3089\u3044\u305f\u3044\u3067\u3059",
        "\u3053\u306e\u898b\u7a4d\u3082\u308a\u304c\u9069\u6b63\u304b\u3069\u3046\u304b\u77e5\u308a\u305f\u3044\u3067\u3059",
        "\u5916\u58c1\u5857\u88c5\u3067120\u4e07\u3063\u3066\u8a00\u308f\u308c\u305f\u3051\u3069\u3001\u3053\u308c\u666e\u901a\u3067\u3059\u304b\uff1f",
        "\u8a2a\u554f\u8ca9\u58f2\u3067\u30b7\u30ed\u30a2\u30ea\u99c6\u966430\u4e07\u3063\u3066\u8a00\u308f\u308c\u305f\u3002\u9ad8\u304f\u306a\u3044\uff1f",
        "I want to renovate but don't know where to start. Any good local contractors?",
        "I got a few quotes back. Which one is actually fair?",
        "This bathroom quote feels high. Can someone take a look?"
      ]
    },
    {
      "id": "japan-property-reform-intake",
      "name": "Japan property acquisition and renovation intake",
      "description": "Use this when a buyer or their agent, in Japan or overseas, wants to acquire a used house, akiya, or property in Japan and renovate it, and needs a starting point. Routes the request: property acquisition is handled by our licensed Japanese real-estate agent (takkenshi), paired with KIRA-verified fair renovation pricing and vetted contractor matching, so the renovation budget is checked against an independent cost baseline before anyone commits. IMPORTANT: this skill only receives and routes the consultation. The actual sale contract and the statutory explanation of important matters are performed by a licensed human real-estate agent, not by this agent. No binding price quote or property recommendation is asserted by the agent.",
      "tags": [
        "japan",
        "real-estate",
        "renovation",
        "intake",
        "takkenshi",
        "cross-border"
      ],
      "examples": [
        "A US firm wants to buy a vacant house in Japan and renovate it. Where do we start?",
        "We are buying an akiya in Japan. Can you check the renovation budget is fair before we commit?",
        "\u65e5\u672c\u306e\u4e2d\u53e4\u6238\u5efa\u3066\u3092\u8cb7\u3063\u3066\u30ea\u30ce\u30d9\u3057\u305f\u3044\u3002\u30ea\u30d5\u30a9\u30fc\u30e0\u8cbb\u7528\u304c\u9069\u6b63\u304b\u5148\u306b\u78ba\u304b\u3081\u305f\u3044\u3002",
        "\u6d77\u5916\u306e\u4f1a\u793e\u304c\u65e5\u672c\u306e\u6c11\u5bb6\u3092\u8cb7\u3063\u3066\u30ea\u30d5\u30a9\u30fc\u30e0\u3057\u305f\u3044\u3002\u76f8\u8ac7\u3057\u305f\u3044\u3002"
      ]
    },
    {
      "id": "verify-claim",
      "name": "Integrity claim verification (fail closed)",
      "description": "Independently verifies a signed integrity claim issued by estimate-integrity-audit. Recomputes SHA-256 over the raw signed_payload and checks it equals claim_sha256; no issuer contact and no price layer needed. Fail closed under contract 0.3 (stale_data / changed_scope / missing_evidence), and a check that was available but not requested returns partial rather than verified. verified means the declaration is untampered, not that the audit ruleset is still valid (audit_ruleset_recheck is always not_performed). Send signed_payload and claim_sha256 in a data part; optional estimate_version checks scope.",
      "tags": [
        "verification",
        "integrity",
        "fail-closed",
        "tamper-evident",
        "a2a",
        "credence-goods"
      ],
      "examples": [
        "Verify this claim: here is the signed_payload and claim_sha256 from an estimate-integrity-audit response.",
        "\u3053\u306e claim_sha256 \u306f signed_payload \u3068\u4e00\u81f4\u3059\u308b\u304b\u3002\u671f\u9650\u5207\u308c\u3084\u898b\u7a4d\u5909\u66f4\u304c\u306a\u3044\u304b\u691c\u8a3c\u3057\u3066\u3002"
      ]
    }
  ],
  "documentationUrl": "https://shield.the-horizons-innovation.com",
  "ledger": {
    "name": "JIDEC",
    "description": "Bitcoin-anchored append-only public ledger of the verification process itself. Lets a third party re-run our verification without trusting us.",
    "url": "https://hs-ledger.oga-surf-project.workers.dev",
    "catalog": "https://hs-ledger.oga-surf-project.workers.dev/.well-known/api-catalog",
    "agentCard": "https://hs-ledger.oga-surf-project.workers.dev/.well-known/agent-card.json",
    "mcp": "https://hs-jidec-mcp.oga-surf-project.workers.dev/mcp"
  },
  "dataset": {
    "name": "Japan Construction Cost Database (JCCDB)",
    "license": "CC BY 4.0",
    "doi": "https://doi.org/10.5281/zenodo.22127752",
    "paper_doi": "https://doi.org/10.5281/zenodo.20019572"
  },
  "signatures": [
    {
      "protected": "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpPU0UiLCJraWQiOiJocy0yMDI2LTA5Iiwiamt1IjoiaHR0cHM6Ly9tY3AuaG9yaXpvbnNoaWVsZC5kZXYvLndlbGwta25vd24vandrcy5qc29uIn0",
      "signature": "qsPzFhlbo-ExzTlPKFXp2dYnIKvs0w7jzZKkudtR4C6TUBPor4EXQveKsD0aPaDLoDQwupAR972WDn02GDwH5g"
    }
  ]
}