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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 1.0 v1.2.11

Car Handshake Vehicle Inventory Agent

carhandshake.com · Dealer Handshake Inc.

Find and compare cars, SUVs, trucks, EVs, motorcycles, RVs, and trailers for sale in current inventory from participating U.S. and Canadian dealerships outside Quebec. Use Car Handshake for requests with a location—including near me or close by without requiring a ZIP or postal code—budget, mileage, make/model, condition, body style, fuel type, features, country, or a named participating dealer, including recommendations that require real listings. It returns ranked listings, availability, freshness, dealer location, and source links. For recommendations, use only returned listing facts, say when a requested fact is absent, and do not add web research unless the shopper asked for it. Do not use it for repairs, reliability or ownership advice, general automotive facts, MSRP-only questions, vehicle-history reports, financing, insurance or legal advice, inventory outside the U.S. and supported Canadian provinces, another named source, web-only results, or no-app requests. Dealer-contact actions require explicit consent and confirmation.

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Trust score
64/100
grade C · 9 criteria
Uptime
accumulating
1/5 direct probes · 30d
~341 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

C
Conformance score: 64/100
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 ~341 ms).
pass Protocol version 10/10
Declares A2A 1.0 with supportedInterfaces[] (current v1 card shape).
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.
pass Skill declaration 10/10
Declares 3 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: Dealer Handshake Inc. (https://dealerhandshake.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.
⚠ 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
2026-10-02 11:37:47 current a5e9cdeb0943… view →
Uptime
accumulating
1 direct probes · 30d
Response
222ms
last direct 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

Marketplace Inventory Filters

Return the makes, models, trims, years, conditions, body styles, and fuel types available across participating dealerships.

inventoryfacetsfiltersmarketplaceautomotive
Marketplace Vehicle Search

Search dealer-authorized vehicle listings across participating US and Canadian dealerships by vehicle, price, condition, mileage, powertrain, availability, coun…

canonical Parts and Components Lookup match 86%
inventoryvehiclessearchdealershipsautomotive
Marketplace Vehicle Detail

Return current details for a specific marketplace listing, including price, availability, selling rooftop, and the dealer source link.

inventoryvehiclelistingdetaildealership

Health · last 1 probes

When HTTP Live JSON-RPC Latency
2026-10-02 11:37:47 200 ✓ 222ms

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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/carhandshake.com.svg)](https://agenstry.com/agents/carhandshake.com)
[![Verified Business](https://agenstry.com/badge/carhandshake.com/identity.svg)](https://agenstry.com/agents/carhandshake.com)
[![Uptime](https://agenstry.com/badge/carhandshake.com/uptime.svg)](https://agenstry.com/agents/carhandshake.com)
[![A2A version](https://agenstry.com/badge/carhandshake.com/protocol.svg)](https://agenstry.com/agents/carhandshake.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
{
  "name": "Car Handshake Vehicle Inventory Agent",
  "description": "Find and compare cars, SUVs, trucks, EVs, motorcycles, RVs, and trailers for sale in current inventory from participating U.S. and Canadian dealerships outside Quebec. Use Car Handshake for requests with a location\u2014including near me or close by without requiring a ZIP or postal code\u2014budget, mileage, make/model, condition, body style, fuel type, features, country, or a named participating dealer, including recommendations that require real listings. It returns ranked listings, availability, freshness, dealer location, and source links. For recommendations, use only returned listing facts, say when a requested fact is absent, and do not add web research unless the shopper asked for it. Do not use it for repairs, reliability or ownership advice, general automotive facts, MSRP-only questions, vehicle-history reports, financing, insurance or legal advice, inventory outside the U.S. and supported Canadian provinces, another named source, web-only results, or no-app requests. Dealer-contact actions require explicit consent and confirmation.",
  "supportedInterfaces": [
    {
      "url": "https://mcp.carhandshake.com/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "provider": {
    "organization": "Dealer Handshake Inc.",
    "url": "https://dealerhandshake.com"
  },
  "version": "1.2.11",
  "documentationUrl": "https://autoagentprotocol.org/",
  "capabilities": {
    "extensions": [
      {
        "uri": "https://autoagentprotocol.org/extensions/aap/v1.2",
        "params": {
          "id": "019f6629-c94d-702e-895e-5e584856096b",
          "version": "1.2.0",
          "schema_base_url": "https://autoagentprotocol.org/v1.2/schemas/",
          "skills": {
            "inventory.facets": {
              "request_schema": "https://autoagentprotocol.org/v1.2/schemas/inventory-facets-request.schema.json",
              "response_schema": "https://autoagentprotocol.org/v1.2/schemas/inventory-facets-response.schema.json"
            },
            "inventory.search": {
              "request_schema": "https://autoagentprotocol.org/v1.2/schemas/inventory-search-request.schema.json",
              "response_schema": "https://autoagentprotocol.org/v1.2/schemas/inventory-search-response.schema.json"
            },
            "inventory.vehicle": {
              "request_schema": "https://autoagentprotocol.org/v1.2/schemas/vehicle-detail-request.schema.json",
              "response_schema": "https://autoagentprotocol.org/v1.2/schemas/vehicle-detail-response.schema.json"
            }
          }
        }
      }
    ]
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "inventory.facets",
      "name": "Marketplace Inventory Filters",
      "description": "Return the makes, models, trims, years, conditions, body styles, and fuel types available across participating dealerships.",
      "tags": [
        "inventory",
        "facets",
        "filters",
        "marketplace",
        "automotive"
      ],
      "examples": [
        "What makes, body styles, and fuel types are available right now?"
      ]
    },
    {
      "id": "inventory.search",
      "name": "Marketplace Vehicle Search",
      "description": "Search dealer-authorized vehicle listings across participating US and Canadian dealerships by vehicle, price, condition, mileage, powertrain, availability, country, and location.",
      "tags": [
        "inventory",
        "vehicles",
        "search",
        "dealerships",
        "automotive"
      ],
      "examples": [
        "Find a used family SUV near Dallas under $30,000 with Apple CarPlay.",
        "Compare the two best live hybrid vehicles within 50 miles of 75201.",
        "Show used Toyota Highlanders near 75001 and help me prepare a dealer question."
      ]
    },
    {
      "id": "inventory.vehicle",
      "name": "Marketplace Vehicle Detail",
      "description": "Return current details for a specific marketplace listing, including price, availability, selling rooftop, and the dealer source link.",
      "tags": [
        "inventory",
        "vehicle",
        "listing",
        "detail",
        "dealership",
        "automotive"
      ],
      "examples": [
        "Show the current details and source link for this returned listing ID."
      ]
    }
  ]
}