# RevvedUpCars True Cost Index

> What a new car costs a month to own in the US: loan, insurance, maintenance, fuel. No key.

- name: com.revvedupcars/true-cost-index
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 96/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.revvedupcars%2Ftrue-cost-index
- tools: https://api.protogrid.dev/v1/servers/com.revvedupcars%2Ftrue-cost-index/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "true-cost-index": {
      "type": "http",
      "url": "https://revvedupcars.com/api/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 98
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-94% +updated-21d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 96/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### 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: 100 (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`: 4 of 4 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 650 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

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

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

- tools: 4, about 650 tokens to load them all
- tool set hash: 1397f93b3cd3be63a64f2a32440c10a8
- badge: [![protogrid quality](https://protogrid.dev/badge/com.revvedupcars/true-cost-index.svg)](https://protogrid.dev/servers/com.revvedupcars/true-cost-index)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://revvedupcars.com/api/mcp (streamable-http, auth none, reachable true, uptime30d 0.9390244)

## Packages

_none_

## Tools (4)

- `compare_true_cost`: Compare two cars' true monthly cost of ownership: which is cheaper, by how much per month and per year, and which cost line accounts for most of the gap. Differences under $10 a month are reported as a tie.
- `cost_index`: Rank a segment of the catalogue by true monthly cost of ownership, cheapest first, with the segment's cheapest, median and most expensive figures.
- `find_car`: Search the priced catalogue by make, model, trim or year and return matching cars with their slug and true monthly cost. Every word must match. Newest model years first.
- `get_true_cost`: One car's true monthly cost of ownership: loan, insurance, maintenance and fuel, the total per month and per year, whether each estimate is the car's own figure or a segment average, and its rank among comparable cars.