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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC signed A2A 0.3.0 v1.1.0

HORIZON SHIELD JIDEC

ledger.horizonshield.dev

Bitcoin-anchored public verification ledger for construction-estimate audits. Resolves a citation to the exact anchored bytes, recomputes their hash, and reports the Bitcoin anchoring status, so that a third party can confirm a result without trusting HORIZON SHIELD.

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Trust score
55/100
grade D · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~35 ms response
Observed inflow · 30d
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

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
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 ~35 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"` (Major.Minor, no patch number — §3.6) to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
partial JWS signature 5/10
Card has a signatures[] entry but we haven't verified it.
How to earn +5 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 →
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` — `description` and `tags` are REQUIRED on AgentSkill since A2A v1.0, and tags are what discovery filters match on. We canonicalise these into the global skill taxonomy on next probe.
Docs →
fail Verified Identity 0/10
No provider organisation declared. Anonymous agent.
How to earn +10 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.
⚠ 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 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

1 snapshot Every change to agent-card.json
Captured Hash
2026-09-23 10:35:17 current e06b8d44ceb8… view →
Uptime
accumulating
1 direct probes · 30d
Response
27ms
last direct probe
Skills
1
declared
Streaming
SSE-capable

Try it

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

calling agent…

Skills · 1 declared · mapped to canonical taxonomy

Cite and independently verify a JIDEC record

Given a citation (jidec:entry:<n>, jidec:path:<sha>, a bare 64-hex id, or a ledger URL), fetch the anchored bytes, recompute SHA-256, confirm it equals the cite…

canonical X402 Usdc Payments match 82%
verificationprovenancetransparency-logbitcoinopentimestamps

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-09-23 10:35:17 200 27ms

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/ledger.horizonshield.dev.svg)](https://agenstry.com/agents/ledger.horizonshield.dev)
[![Verified Business](https://agenstry.com/badge/ledger.horizonshield.dev/identity.svg)](https://agenstry.com/agents/ledger.horizonshield.dev)
[![Uptime](https://agenstry.com/badge/ledger.horizonshield.dev/uptime.svg)](https://agenstry.com/agents/ledger.horizonshield.dev)
[![A2A version](https://agenstry.com/badge/ledger.horizonshield.dev/protocol.svg)](https://agenstry.com/agents/ledger.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
{
  "name": "HORIZON SHIELD JIDEC",
  "description": "Bitcoin-anchored public verification ledger for construction-estimate audits. Resolves a citation to the exact anchored bytes, recomputes their hash, and reports the Bitcoin anchoring status, so that a third party can confirm a result without trusting HORIZON SHIELD.",
  "version": "1.1.0",
  "documentationUrl": "https://ledger.horizonshield.dev/llms.txt",
  "iconUrl": null,
  "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": "other",
            "paid_by_note": "The operator funds this ledger itself, as the cost of making its own conduct checkable. Reading is free. Witness submission is free. No listed party pays, no reader pays, and there is no paid placement.",
            "referral_fee": false,
            "listing_fee": false,
            "success_fee_pct": 0,
            "disclosure_url": "https://ledger.horizonshield.dev/llms.txt"
          },
          "measured_endpoints": [
            "https://jidec.horizonshield.dev/mcp"
          ],
          "conduct_record": "https://gate.horizonshield.dev/history?endpoint=https%3A%2F%2Fjidec.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"
          }
        }
      }
    ]
  },
  "supportedInterfaces": [
    {
      "url": "https://ledger.horizonshield.dev/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    },
    {
      "url": "https://ledger.horizonshield.dev/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "0.3"
    }
  ],
  "url": "https://ledger.horizonshield.dev/a2a",
  "preferredTransport": "JSONRPC",
  "protocolVersion": "0.3.0",
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "skills": [
    {
      "id": "cite-and-verify",
      "name": "Cite and independently verify a JIDEC record",
      "description": "Given a citation (jidec:entry:<n>, jidec:path:<sha>, a bare 64-hex id, or a ledger URL), fetch the anchored bytes, recompute SHA-256, confirm it equals the cited id, and report the Bitcoin anchoring status together with an explicit statement of what the proof does and does not cover.",
      "tags": [
        "verification",
        "provenance",
        "transparency-log",
        "bitcoin",
        "opentimestamps",
        "construction",
        "audit",
        "\u5efa\u8a2d",
        "\u7a4d\u7b97",
        "\u691c\u8a3c"
      ],
      "examples": [
        "jidec:entry:5",
        "jidec:entry:2",
        "Verify this JIDEC citation and tell me what it does not prove."
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "application/json",
        "text/plain"
      ]
    }
  ],
  "securitySchemes": {},
  "security": [],
  "supportsAuthenticatedExtendedCard": false,
  "additionalDiscovery": {
    "apiCatalog": "https://ledger.horizonshield.dev/.well-known/api-catalog",
    "mcp": "https://jidec.horizonshield.dev/mcp"
  },
  "signatures": [
    {
      "protected": "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpPU0UiLCJraWQiOiJocy0yMDI2LTA5Iiwiamt1IjoiaHR0cHM6Ly9sZWRnZXIuaG9yaXpvbnNoaWVsZC5kZXYvLndlbGwta25vd24vandrcy5qc29uIn0",
      "signature": "pX0h9P6z9BoKWoYzDtjhJqL0cH6hTkbD5Pp7_QBPSjdg2G738HhD66j1cHqpXavaKXp2xcJaPY1f1fIFwu_7UQ"
    }
  ]
}