# Car Handshake (remote · mcp.carhandshake.com)

Find and compare live vehicle inventory from participating US dealers and contact them with consent.

- Trust score: 68/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-18

## Components

- remote · `mcp.carhandshake.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/com-carhandshake-inventory/mcp.md), [page](https://verifymcp.io/servers/com-carhandshake-inventory/mcp)

## Channel facts

- Endpoint: `https://mcp.carhandshake.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.2.11`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-18.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (schedule_test_drive).
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 79/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1946 tokens (~149/item across 13 items; 10 tools + 3 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 87/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 54% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### Claude

```bash
claude mcp add --transport http com-carhandshake-inventory https://mcp.carhandshake.com/mcp
```

### Codex

```toml
[mcp_servers.com-carhandshake-inventory]
url = "https://mcp.carhandshake.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-carhandshake-inventory": {
      "type": "remote",
      "url": "https://mcp.carhandshake.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-carhandshake-inventory --url https://mcp.carhandshake.com/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-carhandshake-inventory:
    url: "https://mcp.carhandshake.com/mcp"
```

### Other

```json
{
  "mcpServers": {
    "com-carhandshake-inventory": {
      "type": "http",
      "url": "https://mcp.carhandshake.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-17 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-15 (score 67, +7)

- [functional improvement] Schema quality: unverified → good

### 2026-08-14 (score 60, −6)

- [functional regression] Schema quality: good → unverified
- [cosmetic] “shop_vehicles” reworded the description of “radius_miles”

### 2026-08-13 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-12 (score 65, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-11 (score 65)

First indexed and scored.

## MCP tools (10)

### `shop_vehicles` (~558 tokens)

Shop connected US dealership inventory

Use for live US cars, SUVs, trucks, EVs, motorcycles, RVs, or trailers by place (near me/close by), budget, mileage, make/model, condition, body, fuel, features, named dealer, or live-listing recommendation. Call once; never retry/refine/broaden. Geographic fallback is final; filters stay exact. Use returned facts; browse only if asked. Named-dealer stock: find_dealerships once, then shop. Not for repair/reliability/facts, MSRP/non-US, named-source, web-only, or no-app. Pass request verbatim; never ask for ZIP.

Input parameters:

- `bodies` (array)
- `charge_ports` (array)
- `conditions` (array): New, used, or certified pre-owned (cpo).
- `cursor` (string)
- `dc_fast_charge` (boolean)
- `dealer_ids` (array)
- `displacement_cc_max` (integer)
- `displacement_cc_min` (integer)
- `drivelines` (array)
- `electric_range_max` (number)
- `electric_range_min` (number)
- `exterior_colors` (array)
- `features` (array): Features: third_row, awd_4wd, tow_package, apple_carplay, android_auto, adaptive_cruise, leather, heated_seats, ev_range_200_plus. Unknown names are disclosed, not hard-filtered.
- `fuels` (array)
- `interior_colors` (array)
- `limit` (integer)
- `location_text` (string): Free-text city/place/state/postal exactly as the shopper supplied; never ask for a ZIP code.
- `makes` (array)
- `mileage_max` (integer)
- `models` (array)
- `nationwide` (boolean)
- `price_max` (integer)
- `price_min` (integer)
- `radius_miles` (number): Search radius around the resolved location. If nothing matches, the search widens automatically — double this radius, then statewide, then national — keeping every vehicle filter exact, and reports t…
- `request` (string, required): The shopper's natural-language request, verbatim.
- `sort_by` (string): Result order; default relevance.
- `sort_direction` (string)
- `statuses` (array): Omit unless status is explicit; omission searches both available and intransit.
- `transmissions` (array)
- `trims` (array)
- `vehicle_types` (array): Vehicle categories, including motorcycles, RVs, and trailers.
- `year_max` (integer)
- `year_min` (integer)

Output parameters:

- `applied_filters` (object)
- `coverage` (object)
- `fallback` (object)
- `freshness` (object)
- `interpreted_request` (object)
- `matches` (array)
- `next_action` (string)
- `next_cursor` (string|null)
- `suggested_relaxations` (array)
- `total` (integer)
- `total_relation` (string)

### `get_vehicle` (~34 tokens)

Get one live listing by stable ID

For full detail, pass exact shop_vehicles listing_id; returns dealer.dealer_id.

Input parameters:

- `listing_id` (string, required)

Output parameters:

- `battery_kwh` (number|null)
- `body` (string|null)
- `charge_port` (string|null)
- `city_mpg` (integer|null)
- `condition` (string|null)
- `dc_fast_charge` (boolean|null)
- `dealer` (object)
- `description` (string|null)
- `displacement_cc` (number|null)
- `distance_miles` (number|null)
- `driveline` (string|null)
- `electric_range_miles` (number|null)
- `engine` (string|null)
- `exterior_color` (string|null)
- `features` (array)
- `fuel` (string|null)
- `highway_mpg` (integer|null)
- `interior_color` (string|null)
- `listing_id` (string)
- `listing_url` (string|null)
- `listing_url_source` (string|null)
- `location` (object)
- `make` (string)
- `mileage` (integer|null)
- `model` (string)
- `motor_power_hp` (number|null)
- `msrp` (integer|null)
- `photos` (array)
- `price` (integer|null)
- `primary_photo_url` (string|null)
- `status` (string)
- `stock` (string|null)
- `transmission` (string|null)
- `trim` (string|null)
- `updated_at` (string)
- `vehicle_type` (string)
- `vin` (string)
- `year` (integer)

### `search` (~37 tokens)

Search live vehicle listings for citations

Citation only; never shopping/detail/compare. Search once, then fetch exact IDs.

Input parameters:

- `query` (string, required): Vehicle-shopping query, verbatim.

Output parameters:

- `next_action` (string)
- `results` (array)

### `fetch` (~34 tokens)

Fetch one live vehicle listing for citation

Citation only after search; never shopping/detail. Fetch one exact ID.

Input parameters:

- `id` (string, required): Exact listing ID returned by search.

Output parameters:

- `id` (string)
- `metadata` (object)
- `text` (string)
- `title` (string)
- `url` (string)

### `compare_vehicles` (~70 tokens)

Compare two to four live listings

Only for explicit comparison: after exactly one shop_vehicles call, pass 2-4 distinct returned listing IDs. Never search or shop again.

Input parameters:

- `listing_ids` (array, required): 2-4 exact IDs returned by shop_vehicles.
- `priorities` (array): Shopper priorities, up to eight.

Output parameters:

- `compared` (integer)
- `missing_listing_ids` (array)
- `recommendation` (object)
- `vehicles` (array)

### `find_dealerships` (~92 tokens)

Find participating US dealerships

Use this once to resolve participating dealerships by name/place with IDs, addresses, and listing counts. For named-dealer inventory, pass an exact returned dealer_id to one shop_vehicles call. For rooftop contacts or sales/service hours, call get_dealership once.

Input parameters:

- `limit` (integer)
- `location` (string): Place or postal text exactly as supplied.
- `query` (string)

Output parameters:

- `dealerships` (array)
- `interpreted_location` (object|null)
- `next_action` (string)
- `total` (integer)

### `get_dealership` (~52 tokens)

Get dealership locations, hours, and contacts

Use this with one exact dealer_id from find_dealerships or get_vehicle to return every public rooftop, phone, website, capability, and named sales/service schedule.

Input parameters:

- `dealer_id` (string, required)

Output parameters:

- `agent_card_url` (string|null)
- `dealer_id` (string)
- `domain` (string)
- `locations` (array)
- `name` (string)
- `vehicle_count` (integer)

### `schedule_test_drive` (~185 tokens)

Request a test drive

With explicit consent and confirmation, request dealer test-drive follow-up for this listing.

Input parameters:

- `allowed_channels` (array, required): Accepted channels.
- `appointment_at` (string)
- `consent_granted_at` (string, required): Consent time, RFC 3339 with timezone.
- `consent_text` (string, required): Exact accepted words; never fabricate consent.
- `dry_run` (boolean): Validate only; no dealer contact.
- `email` (string): Email; email or phone required.
- `first_name` (string, required): First name.
- `idempotency_key` (string, required): Unique retry key.
- `last_name` (string, required): Last name.
- `listing_id` (string, required): Exact listing_id from prior read.
- `message` (string): Optional dealer note.
- `phone` (string): E.164 phone; email or phone required.
- `preferred_contact` (string)

Output parameters:

- `lead_id` (string)
- `status` (string)

### `request_trade_in_appraisal` (~233 tokens)

Request a trade-in appraisal

With explicit consent and confirmation, request dealer trade-in appraisal for this listing.

Input parameters:

- `allowed_channels` (array, required): Accepted channels.
- `consent_granted_at` (string, required): Consent time, RFC 3339 with timezone.
- `consent_text` (string, required): Exact accepted words; never fabricate consent.
- `dry_run` (boolean): Validate only; no dealer contact.
- `email` (string): Email; email or phone required.
- `first_name` (string, required): First name.
- `idempotency_key` (string, required): Unique retry key.
- `last_name` (string, required): Last name.
- `listing_id` (string, required): Exact listing_id from prior read.
- `message` (string): Optional dealer note.
- `phone` (string): E.164 phone; email or phone required.
- `preferred_contact` (string)
- `trade_in_condition` (string)
- `trade_in_make` (string, required)
- `trade_in_mileage` (integer)
- `trade_in_model` (string, required)
- `trade_in_trim` (string)
- `trade_in_year` (integer, required)

Output parameters:

- `lead_id` (string)
- `status` (string)

### `submit_vehicle_inquiry` (~178 tokens)

Send a vehicle inquiry

With explicit consent and confirmation, send this listing's dealer the shopper's question.

Input parameters:

- `allowed_channels` (array, required): Accepted channels.
- `consent_granted_at` (string, required): Consent time, RFC 3339 with timezone.
- `consent_text` (string, required): Exact accepted words; never fabricate consent.
- `dry_run` (boolean): Validate only; no dealer contact.
- `email` (string): Email; email or phone required.
- `first_name` (string, required): First name.
- `idempotency_key` (string, required): Unique retry key.
- `last_name` (string, required): Last name.
- `listing_id` (string, required): Exact listing_id from prior read.
- `message` (string, required): Optional dealer note.
- `phone` (string): E.164 phone; email or phone required.
- `preferred_contact` (string)

Output parameters:

- `lead_id` (string)
- `status` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-carhandshake-inventory/mcp#diagnostics

## Score history

- 2026-08-18: 68
- 2026-08-17: 68
- 2026-08-16: 67
- 2026-08-15: 67
- 2026-08-14: 60
- 2026-08-13: 66
- 2026-08-12: 65
- 2026-08-11: 65

## Links

- Remote endpoint: https://mcp.carhandshake.com/mcp
- Website: https://carhandshake.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-carhandshake-inventory/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-carhandshake-inventory/mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-carhandshake-inventory/mcp