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

UCP Playground Tech Shop

ucpplayground.com · UCP Playground

A2A-compliant tech accessories store for demonstrating UCP + A2A protocol.

🛡
Own this agent?
Verify the domain ucpplayground.com 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
48/100
grade D · 9 criteria
Uptime
accumulating
1/5 probes
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: 48/100
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.
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 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 3/10
Provider name only: UCP Playground. No URL, no registry identifier.
How to earn +7 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
2026-05-24 18:56:00 current 5fabd2b1ed00… view →
Uptime
100.0%
1 probes
Response
89ms
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://ucpplayground.com/.well-known/agent-card.json
Discovered via
manifests

Skills · 1 declared · mapped to canonical taxonomy

Shopping

Search, checkout, and purchase tech accessories.

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-05-24 18:56:00 200 ✓ 89ms

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

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 
{
  "id": "ucpplayground-tech-shop",
  "name": "UCP Playground Tech Shop",
  "description": "A2A-compliant tech accessories store for demonstrating UCP + A2A protocol.",
  "provider": {
    "organization": "UCP Playground"
  },
  "url": "https://ucpplayground.com/a2a",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "skills": [
    {
      "id": "shopping",
      "name": "Shopping",
      "description": "Search, checkout, and purchase tech accessories."
    }
  ],
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ]
}