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📊 Intel view 📋 Audit JSON 🔄 Changelog
35
A2A A2A 0.3.0

A2A Grocery — the grocery shelf — gtinfetch by GSC

a2a-grocery.ai · GreenCore Solutions Corp.

On the gtinfetch record, A2A Grocery is the agentic commerce hub for retail grocery: 20 markets, one call to find, check and order.

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Verify the domain a2a-grocery.ai 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.
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Compare public evidence

🔔 Watch this agent. Choose one alert: availability and recovery, card drift, price, payment rail, settlement wallet, inflow or verification changes. Add more alert types from your account. 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
35/100
grade F · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~46 ms response
Observed inflow · 30d
—
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
stable
1 snapshot tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

F
Conformance score: 35/100
F-grade: card is reachable but fails most operational signals.
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).
fail Live JSON-RPC 5/25
Endpoint replies but body isn't a valid JSON-RPC 2.0 A2A response.
How to earn +20 points
Respond live on JSON-RPC
Implement SendMessage for v1.0 (or message/send for v0.x), negotiate A2A-Version, and return a schema-valid JSON-RPC response. Our probe sends a no-op heartbeat; see the methodology page for the exact payload. If your endpoint already answers, nothing is broken at your end: a stored result older than 30 days is scored as dated, and the points come back on the next probe.
Docs
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
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 2 skill, usable but thin. 2 skills without tags — optional in 0.x, REQUIRED once you move the card to v1.0.
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
partial Verified Identity 5/10
Provider declared: GreenCore Solutions Corp. (https://gsc-em.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

1 snapshot Every change to agent-card.json
Agent card snapshots
Captured Hash Snapshot
2026-10-31 08:35:16 current 87799bd0cc4f… view →
Uptime
accumulating
1 direct probes · 30d
Response
75ms
last direct probe
Skills
2
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://a2a-grocery.ai/.well-known/agent-card.json
Providerhttps://gsc-em.com
Discovered via
manifests

Skills · 2 declared by this agent

These skills are declared by the agent. A taxonomy link appears only when we can classify a skill confidently.

Fetch GTIN
No taxonomy category yet
gtinproduct-recordgrocerymcp
Find, check and order on A2A Grocery
No taxonomy category yet
orderhubmcp

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-31 08:35:16 200 ✗ 75ms

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Embed your Agenstry badge

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/a2a-grocery.ai.svg)](https://agenstry.com/agents/a2a-grocery.ai)
[![Verified Business](https://agenstry.com/badge/a2a-grocery.ai/identity.svg)](https://agenstry.com/agents/a2a-grocery.ai)
[![Uptime](https://agenstry.com/badge/a2a-grocery.ai/uptime.svg)](https://agenstry.com/agents/a2a-grocery.ai)
[![A2A version](https://agenstry.com/badge/a2a-grocery.ai/protocol.svg)](https://agenstry.com/agents/a2a-grocery.ai)

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": "A2A Grocery \u2014 the grocery shelf \u2014 gtinfetch by GSC",
  "description": "On the gtinfetch record, A2A Grocery is the agentic commerce hub for retail grocery: 20 markets, one call to find, check and order.",
  "url": "https://a2a-grocery.ai/",
  "provider": {
    "organization": "GreenCore Solutions Corp.",
    "url": "https://gsc-em.com"
  },
  "operator": {
    "name": "GreenCore Solutions Corp.",
    "duns": "24-336-6774",
    "microsoft_partner": "Microsoft AI Cloud Partner"
  },
  "supportedInterfaces": [
    {
      "url": "https://mcp.gtinfetch.ai/mcp",
      "protocolBinding": "MCP"
    },
    {
      "url": "https://mcp.a2a-grocery.ai/mcp",
      "protocolBinding": "MCP"
    }
  ],
  "skills": [
    {
      "id": "fetch_gtin",
      "name": "Fetch GTIN",
      "tags": [
        "gtin",
        "product-record",
        "grocery",
        "mcp"
      ]
    },
    {
      "id": "hub_order",
      "name": "Find, check and order on A2A Grocery",
      "tags": [
        "order",
        "hub",
        "mcp"
      ]
    }
  ]
}