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CarrierTrail MCP server

Which MCP servers are CarrierTrail's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-30

← Back to CarrierTrail

Whose server it is
  • Registry namecom.carriertrail/mcpverified in the MCP registry

The registry name sits under carriertrail.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-30
  • Stateanswerschecked 2026-10-30
  • Tools3
  • Server calls itselfcarriertrail
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-30 the server answered initialize and tools/list without a sign-in. First answer in 277 ms.

Should an agent connect itNot proven either way yet
  • Its tools do look up carrier authority, insurance and safety records before booking; monitor approved carriers for authority, insurance and contact changes, but not save team decisions with the evidence seen at the time.
  • Checked on 5 of the 7 days it takes to judge reliability.

Once connected

  • For "look up carrier authority, insurance and safety records before booking", the likely first call is get_carrier.
  • Parameters are untyped or undescribed in 2 of 3 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 5, the first on 2026-10-30
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 5 so far
  • What an agent can do with it2 of 3 use cases
  • Answeredmeasuring5 of the 7 daily checks it takes to print a share
  • Median first answer277 ms
  • Space in an agent's context≈ 441 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsB · 89 of 100
  • Typed results0 of 3 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 2 of 3

What an agent can do with it

  • can do · look up carrier authority, insurance and safety records before booking
  • can do · monitor approved carriers for authority, insurance and contact changes
  • cannot · save team decisions with the evidence seen at the time

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers3 tools · read 2026-10-30
  • 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.

  • 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).

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Add it

Claude Code, in a terminal

claude mcp add --transport http carriertrail https://carriertrail.com/mcp/v1

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://carriertrail.com/mcp/v1 as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.