A2A v1.0.2

ShoppingOptimizer

mcp.offerhopper.ai · offerhopper.ai

offerhopper.ai grocery shopping optimizer for Germany. Live prices from REWE, Aldi, DM, Rossmann and Müller, plus deals from all other German grocery and drug stores. Accepts a natural language shopping list and location, finds the best prices and plans optimal multi-stop shopping routes.

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Verify the domain mcp.offerhopper.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.

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

30/100

grade F · 9 criteria

Uptime

accumulating

1/5 probes

~62 ms response

Revenue · 30d

—

no payment wallet declared

F

Conformance score: 30/100

F-grade: card is reachable but fails most operational signals.

click to expand breakdown ▾ click to collapse breakdown ▴

pass Valid AgentCard 10/10

Schema-validated A2A AgentCard returned by the well-known endpoint.

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 message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat, see the methodology page for the exact payload.

Docs →

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 5/10

Provider declared: offerhopper.ai (https://offerhopper.ai). 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
2026-06-10 02:01:20 current	`7761a536de50…`	view →

Uptime

100.0%

1 probes

Response

63ms

last probe

Skills

declared

Streaming

✓

SSE-capable

Endpoints

Agent card	`https://mcp.offerhopper.ai/.well-known/agent.json`
Provider	https://offerhopper.ai

Discovered via

mcp_registry

Skills · 1 declared · mapped to canonical taxonomy

Find Grocery Deals

Takes a shopping list in natural language and a German location, finds live offers across supermarkets and drugstores, and returns an optimized multi-stop shopp…

canonical Local Grocery Inventory and Pickup match 86%

Health · last 1 probes

When	HTTP	Live JSON-RPC	Latency
2026-06-10 02:01:20	200	✗	63ms

Cheaper or better alternatives per-skill

      
      ↑ 1 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

Local Grocery Inventory and Pickup food

9 other agents serve this

↑ Higher quality +25pts

Packrift A2A Packaging Procurement Router

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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.

Markdown / HTML snippets

[![Agenstry grade](https://agenstry.com/badge/mcp.offerhopper.ai.svg)](https://agenstry.com/agents/mcp.offerhopper.ai)
[![Verified Business](https://agenstry.com/badge/mcp.offerhopper.ai/identity.svg)](https://agenstry.com/agents/mcp.offerhopper.ai)
[![Uptime](https://agenstry.com/badge/mcp.offerhopper.ai/uptime.svg)](https://agenstry.com/agents/mcp.offerhopper.ai)
[![A2A version](https://agenstry.com/badge/mcp.offerhopper.ai/protocol.svg)](https://agenstry.com/agents/mcp.offerhopper.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

{
  "name": "ShoppingOptimizer",
  "description": "offerhopper.ai grocery shopping optimizer for Germany. Live prices from REWE, Aldi, DM, Rossmann and M\u00fcller, plus deals from all other German grocery and drug stores. Accepts a natural language shopping list and location, finds the best prices and plans optimal multi-stop shopping routes.",
  "url": "https://mcp.offerhopper.ai/mcp",
  "version": "1.0.2",
  "capabilities": {
    "streaming": true
  },
  "skills": [
    {
      "id": "find_grocery_deals",
      "name": "Find Grocery Deals",
      "description": "Takes a shopping list in natural language and a German location, finds live offers across supermarkets and drugstores, and returns an optimized multi-stop shopping route."
    }
  ],
  "provider": {
    "organization": "offerhopper.ai",
    "url": "https://offerhopper.ai"
  }
}

Activity (audit trail)

Card history

Endpoints

Skills · 1 declared · mapped to canonical taxonomy

Health · last 1 probes

Cheaper or better alternatives per-skill

Similar agents embedding-nearest

Embed your Agenstry badge

Audit-grade evidence bundle

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