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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 0.2.5 v1.0.0

Echo Agent (Demo)

a2a-inspector-liart.vercel.app · A2A Inspector

A bundled demonstration agent shipped with A2A Inspector. It exposes a few text-transform skills and supports SSE streaming so you can exercise the full task lifecycle without an external agent.

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🔔 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
71/100
grade C · 9 criteria
Uptime
100.0%
107 probes
~246 ms response
Observed inflow · 30d
no payment wallet declared
Usage · 7d
1
impressions + calls
Card drift · 7d
stable
1 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 71/100
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 ~246 ms).
partial Protocol version 2/10
Declares unrecognised version '0.2.5'.
How to earn +8 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
107/107 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: A2A Inspector (https://a2a-inspector-liart.vercel.app). 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 calls Public aggregate · no PII recorded
0
calls 24h
1
calls 7d
1
search_impression 7d
Recent events (last 20)
When Event Method Status Latency
2026-08-06T09:33:43 search_impression 200 ok
2026-08-01T10:16:56 search_impression 200 ok
2026-08-01T04:15:22 search_impression 200 ok
2026-07-30T09:10:36 search_impression 200 ok
2026-07-27T17:03:26 search_impression 200 ok
2026-07-24T21:06:22 search_impression 200 ok
2026-07-24T19:49:35 search_impression 200 ok
2026-07-23T14:42:17 search_impression 200 ok
2026-07-22T16:59:14 search_impression 200 ok
2026-07-22T13:01:34 search_impression 200 ok
2026-07-22T00:51:26 search_impression 200 ok
2026-07-19T20:46:12 search_impression 200 ok
2026-07-10T20:22:32 search_impression 200 ok
2026-07-07T01:48:34 search_impression 200 ok

Card history

1 snapshot Every change to agent-card.json
Captured Hash
2026-06-19 06:25:32 current add422204d52… view →
Uptime
100.0%
107 probes
Response
1478ms
last 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

Echo

Repeats your message back verbatim.

canonical Text-to-3D match 87%
textdemo
Shout

Returns your message in UPPERCASE.

canonical Text-to-3D match 85%
texttransform
Reverse

Reverses the characters of your message.

canonical Text-to-3D match 88%
texttransform

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-08-09 10:42:08 200 1478ms
2026-08-08 20:02:36 200 768ms
2026-08-08 11:30:01 200 1023ms
2026-08-07 10:35:38 200 970ms
2026-08-06 13:41:49 200 851ms
2026-08-06 07:50:45 200 889ms
2026-08-05 18:02:07 200 926ms
2026-08-05 07:54:16 200 971ms
2026-08-04 18:09:24 200 1024ms
2026-08-04 07:51:18 200 957ms

Who's calling this agent 30d

12 interactions captured (impressions + lookups + A2A calls)

By AI host (caller_kind) · top 3
curl 5 (42%)
Web browser 2 (17%)
SemrushBot (SEO tool) 1 (8%)
Caller geography · top 3
US 4
NL 2
ES 2
Via which API surface · top 3
rest 12

Public teaser: top-3 per dimension only. Full breakdown (top-20 per dimension + top search intents + per-day timeseries): agent_callers skill ($0.05/call, $0 on Enterprise). Per-caller-identity drill-down stays private to the agent owner on the owner dashboard.

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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/a2a-inspector-liart.vercel.app.svg)](https://agenstry.com/agents/a2a-inspector-liart.vercel.app)
[![Verified Business](https://agenstry.com/badge/a2a-inspector-liart.vercel.app/identity.svg)](https://agenstry.com/agents/a2a-inspector-liart.vercel.app)
[![Uptime](https://agenstry.com/badge/a2a-inspector-liart.vercel.app/uptime.svg)](https://agenstry.com/agents/a2a-inspector-liart.vercel.app)
[![A2A version](https://agenstry.com/badge/a2a-inspector-liart.vercel.app/protocol.svg)](https://agenstry.com/agents/a2a-inspector-liart.vercel.app)

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": "0.2.5",
  "name": "Echo Agent (Demo)",
  "description": "A bundled demonstration agent shipped with A2A Inspector. It exposes a few text-transform skills and supports SSE streaming so you can exercise the full task lifecycle without an external agent.",
  "url": "https://a2a-inspector-liart.vercel.app/api/demo-agent",
  "version": "1.0.0",
  "provider": {
    "organization": "A2A Inspector",
    "url": "https://a2a-inspector-liart.vercel.app"
  },
  "iconUrl": "https://a2a-inspector-liart.vercel.app/icon.svg",
  "documentationUrl": "https://a2a-inspector-liart.vercel.app",
  "preferredTransport": "JSONRPC",
  "capabilities": {
    "streaming": true,
    "pushNotifications": false,
    "stateTransitionHistory": true
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain"
  ],
  "skills": [
    {
      "id": "echo",
      "name": "Echo",
      "description": "Repeats your message back verbatim.",
      "tags": [
        "text",
        "demo"
      ],
      "examples": [
        "Say hello back to me",
        "Echo: testing 1 2 3"
      ]
    },
    {
      "id": "shout",
      "name": "Shout",
      "description": "Returns your message in UPPERCASE.",
      "tags": [
        "text",
        "transform"
      ],
      "examples": [
        "make this loud",
        "shout the announcement"
      ]
    },
    {
      "id": "reverse",
      "name": "Reverse",
      "description": "Reverses the characters of your message.",
      "tags": [
        "text",
        "transform"
      ],
      "examples": [
        "reverse: stressed"
      ]
    }
  ]
}