# CarrierTrail

> US carrier lookup from public FMCSA data: USDOT/MC records, authority, insurance, safety.

- name: com.carriertrail/mcp
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 85/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.carriertrail%2Fmcp
- tools: https://api.protogrid.dev/v1/servers/com.carriertrail%2Fmcp/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "carriertrail": {
      "type": "http",
      "url": "https://carriertrail.com/mcp/v1"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 98
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-94% +updated-9d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 85/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 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: 83 (weight 15)

- pass `auth.prm`: Protected Resource Metadata (RFC 9728) published
- pass `auth.as_metadata`: authorization server metadata reachable
- warn `auth.cimd`: only Dynamic Client Registration, deprecated in 2026-07-28 in favour of CIMD
- 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`: 3 of 3 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: search_carriers (destructiveHint, idempotentHint); get_carrier (destructiveHint, idempotentHint); get_recent_changes (destructiveHint, idempotentHint)
- pass `tools.token_cost`: about 463 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`: 3 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: 3, about 463 tokens to load them all
- tool set hash: 09fa99a35b1f870fbf265ac11f8b9120
- tools last changed: 2026-10-30T00:13:40.311Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.carriertrail/mcp.svg)](https://protogrid.dev/servers/com.carriertrail/mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-30 `get_recent_changes` changed (annotations)
- 2026-10-30 `get_carrier` changed (annotations)
- 2026-10-30 `search_carriers` changed (description, annotations)
  - before: Find US motor carriers, brokers and freight forwarders by company name in FMCSA census data. Returns up to 10 matches with USDOT number, location and status. Use get_carrier for the full record.
  - after: Find US motor carriers, brokers and freight forwarders by company name in FMCSA census data. Returns up to 10 matches with USDOT number, location and status.

Full history: https://api.protogrid.dev/v1/servers/com.carriertrail%2Fmcp/changes

## Remotes

- https://carriertrail.com/mcp/v1 (streamable-http, auth none, reachable true, uptime30d 0.9411765)
- https://carriertrail.com/mcp/account (streamable-http, auth oauth2, reachable true, uptime30d 0.9411765)

## Packages

_none_

## Tools (3)

- `get_carrier`: Company record for one carrier by USDOT, MC, FF or MX number: census registration, operating authority, current insurance filings and 24-month roadside safety summary, with a CarrierTrail link.
- `get_recent_changes`: Changes to one carrier's public FMCSA census fields seen in the last 90 days (name, status, fleet size, MCS-150 date, dockets and more).
- `search_carriers`: Find US motor carriers, brokers and freight forwarders by company name in FMCSA census data. Returns up to 10 matches with USDOT number, location and status.