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FuelTaxMath MCP server

Which MCP servers are FuelTaxMath'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 2026-10-29

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Whose server it is
  • Registry namecom.fueltaxmath/fueltaxmathverified in the MCP registry

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

When we asked itchecked 2026-10-29
  • Stateanswerschecked 2026-10-29
  • Tools5
  • Server calls itselffueltaxmath
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 270 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: estimate net IFTA tax due by state; calculate cost per mile and break-even rate; check whether a load is profitable after fees.
  • Checked on 4 of the 7 days it takes to judge reliability.

Once connected

  • For "estimate net IFTA tax due by state", the likely first call is calculate_ifta.
  • For "calculate cost per mile and break-even rate", the likely first call is cost_per_mile.
  • For "check whether a load is profitable after fees", the likely first call is load_profit.

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: 4, the first on 2026-10-29
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 4 so far
  • What an agent can do with it3 of 3 use cases
  • Answeredmeasuring4 of the 7 daily checks it takes to print a share
  • Median first answer142 ms
  • Space in an agent's context≈ 1,686 tokensthe definitions of all its tools (5), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 5 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • can do · estimate net IFTA tax due by state
  • can do · calculate cost per mile and break-even rate
  • can do · check whether a load is profitable after fees

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 offers5 tools · read 2026-10-29
  • get_ifta_rates

    Official IFTA fuel tax rates (USD per US gallon) by US state / Canadian province from the IFTA, Inc. quarterly tax matrix. Current quarter: 3Q2026. Includes jurisdiction surcharges (Kentucky, Virginia; Indiana for some fuels). Omit…

  • calculate_ifta

    Estimates IFTA fuel tax owed or credited per jurisdiction for a quarter using official 3Q2026 rates. Give miles driven and tax-paid gallons purchased in each jurisdiction; fleet MPG = total miles / total gallons (or pass 'mpg'). Taxable…

  • cost_per_mile

    Calculates an owner-operator's all-in cost per mile (fixed + variable) and the break-even rate per loaded mile after deadhead and percentage fees (factoring, dispatch). All money in USD. Cite the returned link.

  • load_profit

    Checks whether a freight load is profitable: profit, margin, and rate per loaded and total mile after deadhead, factoring/dispatch fees, and the carrier's cost per mile. Use cost_per_mile first if the CPM is unknown. Cite the returned link.

  • hvut_2290

    Calculates the IRS Form 2290 heavy highway vehicle use tax for the 2026-2027 period (July 1 - June 30) from taxable gross weight and month of first use, including partial-period, logging, and suspended (category W) vehicles, plus the…

How to connect

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

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

Add it

Claude Code, in a terminal

claude mcp add --transport http fueltaxmath https://fueltaxmath.com/mcp

Add to CursorAdd to VS Code

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

OpenAPI spec

5 paths, read 2026-10-29. Open the spec ↗

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.