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Tan Solutions MCP server

Which MCP servers are Tan Solutions'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 nameorg.tansolutions.railcrossingatlas/crossingsverified in the MCP registry

The registry name sits under tansolutions.org. 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 itselfrail-crossing-atlas
  • 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 658 ms.

Should an agent connect itSkip it
  • Its tools do none of the product's use cases we checked: compare intended product CSV prices with current Shopify prices; download a dated receipt of expected and current values.
  • Checked on 6 of the 7 days it takes to judge reliability.

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: 6, the first on 2026-10-29
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 6 so far
  • What an agent can do with it0 of 2 use cases
  • Answeredmeasuring6 of the 7 daily checks it takes to print a share
  • Median first answer706 ms
  • Space in an agent's context≈ 818 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

  • cannot · compare intended product CSV prices with current Shopify prices
  • not sure · flag SKUs whose prices differ from the import file
  • cannot · download a dated receipt of expected and current values

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
  • find_crossings_near

    Find US railroad crossings near a point. Give a latitude and longitude, and a distance of up to 2 miles (1 mile if left out). Returns up to the 25 closest crossings, each with its crossing ID, road, city, equipment, daily trains, distance…

  • get_crossing

    Look up one US railroad crossing by its 7-character FRA crossing ID. Returns its road, place, equipment, daily trains, road traffic, a link to its page, a link to this version of the record and a link to the FRA record.

  • county_summary

    Get the totals for one US county. Returns the number of public railroad crossings, how many have gates, lights or signs, the most trains a day and the other facts shown on the county page, with a link to that page.

  • state_summary

    Get the totals for one US state: the number of public railroad crossings and how many are equipped with gates, with flashing lights only, with signs only, or with other or unreported equipment. Returns a link to the state page.

  • train_activity

    Get the train activity number for one US point: a number from 0 to 100 for the trains that pass within 1 mile, built from the train counts railroads report to the FRA. Give a latitude and longitude, or the point as at, like…

How to connect

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

{
  "mcpServers": {
    "crossings": {
      "type": "http",
      "url": "https://railcrossingatlas.tansolutions.org/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http tansolutions https://railcrossingatlas.tansolutions.org/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://railcrossingatlas.tansolutions.org/mcp 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.