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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 0.3.0

HORIZON SHIELD YAKUMO

hs-hearing.oga-surf-project.workers.dev · The HORIZ音s株式会社

A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price and overcharge audit (KIRA) are listed. Discover verified stores by area and trade; prices are never exposed, only integrity scores and tiers.

🛡
Own this agent?
Verify the domain hs-hearing.oga-surf-project.workers.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 for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Trust score
55/100
grade D · 9 criteria
Uptime
accumulating
1/5 probes
~20 ms response
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 55/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
pass Live JSON-RPC 25/25
Endpoint responds to message/send with valid JSON-RPC (answers in ~20 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 the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: The HORIZ音s株式会社 (https://shield.the-horizons-innovation.com/yakumo/). 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
No securitySchemes declared (common for open agents, not penalised).
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

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

No calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-07-19 05:16:15 current 84cd61a6afd7… view →
Uptime
100.0%
1 probes
Response
21ms
last probe
Skills
1
declared
Streaming
—
SSE-capable

Try it

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

calling agent…

Endpoints

Agent cardhttps://hs-hearing.oga-surf-project.workers.dev/.well-known/agent-card.json
Providerhttps://shield.the-horizons-innovation.com/yakumo/
Discovered via
mcp_registry

Skills · 1 declared · mapped to canonical taxonomy

List verified contractors

List construction and renovation contractors in Japan that passed an independent fair-price audit, filterable by area and trade. Returns integrity scores and ti…

canonical Legal Contract Review match 82%
constructionjapanverificationdirectory

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-07-19 05:16:15 200 ✓ 21ms

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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/hs-hearing.oga-surf-project.workers.dev.svg)](https://agenstry.com/agents/hs-hearing.oga-surf-project.workers.dev)
[![Verified Business](https://agenstry.com/badge/hs-hearing.oga-surf-project.workers.dev/identity.svg)](https://agenstry.com/agents/hs-hearing.oga-surf-project.workers.dev)
[![Uptime](https://agenstry.com/badge/hs-hearing.oga-surf-project.workers.dev/uptime.svg)](https://agenstry.com/agents/hs-hearing.oga-surf-project.workers.dev)
[![A2A version](https://agenstry.com/badge/hs-hearing.oga-surf-project.workers.dev/protocol.svg)](https://agenstry.com/agents/hs-hearing.oga-surf-project.workers.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 
{
  "protocolVersion": "0.3.0",
  "name": "HORIZON SHIELD YAKUMO",
  "description": "A neutral, verification-gated directory of Japanese renovation and construction contractors. Only stores that pass an independent fair-price and overcharge audit (KIRA) are listed. Discover verified stores by area and trade; prices are never exposed, only integrity scores and tiers.",
  "provider": {
    "organization": "The HORIZ\u97f3s\u682a\u5f0f\u4f1a\u793e",
    "url": "https://shield.the-horizons-innovation.com/yakumo/"
  },
  "url": "https://hs-hearing.oga-surf-project.workers.dev/mcp",
  "preferredTransport": "JSONRPC",
  "capabilities": {
    "streaming": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "list-verified-contractors",
      "name": "List verified contractors",
      "description": "List construction and renovation contractors in Japan that passed an independent fair-price audit, filterable by area and trade. Returns integrity scores and tiers, never prices.",
      "tags": [
        "construction",
        "japan",
        "verification",
        "directory"
      ],
      "examples": [
        "List verified exterior-painting contractors in Aichi",
        "Show the profile of Yakumo member No.001"
      ]
    }
  ]
}