# TradeBasis US Market Appraisal

> Free US vehicle averages in USD from matched asking prices. VIN optional; limited public pilot.

- name: net.tradebasis/market-appraisal
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 74/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/net.tradebasis%2Fmarket-appraisal
- tools: https://api.protogrid.dev/v1/servers/net.tradebasis%2Fmarket-appraisal/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "market-appraisal": {
      "type": "http",
      "url": "https://tradebasis.net/mcp/appraisal"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-12d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 74/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 1 of 1 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: appraise_vehicle (idempotentHint)
- pass `tools.token_cost`: about 744 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 50 (weight 15)

- pass `stability.changes`: 2 tool changes in 30 days
- fail `stability.rug_pull`: 1 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 1, about 744 tokens to load them all
- tool set hash: dd3fcfaf3b0e17ffa77c5d4a756a6c59
- tools last changed: 2026-10-12T23:01:15.015Z
- badge: [![protogrid quality](https://protogrid.dev/badge/net.tradebasis/market-appraisal.svg)](https://protogrid.dev/servers/net.tradebasis/market-appraisal)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-12 `appraise_vehicle` changed (outputSchema)
- 2026-10-11 `appraise_vehicle` changed (description, inputSchema) **meaning changed**
  - before: A derived TradeBasis asking-price market average. Supply year, make, model, trim and odometerMiles; VIN is optional. Omit market for nationwide US. May request a missing powertrain/body discriminator. Not a trade-in offer or completed-sale value.
  - after: A derived TradeBasis asking-price market average. Supply odometerMiles plus either vin or all of year, make, model and trim. Ask the user for missing details; never invent vehicle identity or mileage. VIN-assisted decoding may still require a confirmed trim, fuelType or bodyStyle. If supplied identity conflicts with the VIN, ask the user to verify the VIN and conflicting fields; do not choose silently or retry unchanged. Omit market for nationwide US. Not a trade-in offer or completed-sale value.

Full history: https://api.protogrid.dev/v1/servers/net.tradebasis%2Fmarket-appraisal/changes

## Remotes

- https://tradebasis.net/mcp/appraisal (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (1)

- `appraise_vehicle`: A derived TradeBasis asking-price market average. Supply odometerMiles plus either vin or all of year, make, model and trim. Ask the user for missing details; never invent vehicle identity or mileage. VIN-assisted decoding may still require a confirmed trim, fuelType or bodyStyle. If supplied identity conflicts with the VIN, ask the user to verify the VIN and conflicting fields; do not choose silently or retry unchanged. Omit market for nationwide US. Not a trade-in offer or completed-sale value.