Skip to content

Doorfarer MCP server

Which MCP servers are Doorfarer'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 Doorfarer

Whose server it is
  • Registry namecom.doorfarer/doorfarerverified in the MCP registry

The registry name sits under doorfarer.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
  • Tools2
  • Server calls itselfdoorfarer
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-30 the server answered initialize and tools/list without a sign-in. First answer in 737 ms.

Should an agent connect itNot proven either way yet
  • Its tools do Rank airports by total door-to-door trip cost; Add train or bus fares to distant airport fares, but not Compare driving and airport parking costs against transit.
  • Checked on 3 of the 7 days it takes to judge reliability.

Once connected

  • For "Rank airports by total door-to-door trip cost", the likely first call is find_trips.
  • For "Add train or bus fares to distant airport fares", the likely first call is find_trips.
  • Keep approval on for send_feedback: they delete, send or pay without saying so.
  • send_feedback change data without a sign-in: anyone with the address can call them.

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: 3, the first on 2026-10-30
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
  • What an agent can do with it2 of 3 use cases
  • Answeredmeasuring3 of the 7 daily checks it takes to print a share
  • Median first answer695 ms
  • Space in an agent's context≈ 4,463 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 · Rank airports by total door-to-door trip cost
  • can do · Add train or bus fares to distant airport fares
  • cannot · Compare driving and airport parking costs against transit

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

  • Tools that delete, send or pay, marked as not destructive: send_feedback
  • Tools that change data, on a server that answers without a sign-in: send_feedback

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 offers2 tools · read 2026-10-30
  • find_trips

    Finds the best round trips from where someone lives, not just from one airport: it adds the train or bus to every airport they can reach and ranks all options door to door, by price, by total travel time, or balanced. Use it when someone…

  • send_feedback

    Tell Doorfarer's maker where Doorfarer fell short, so it can be fixed. Use it when a find_trips answer was wrong, confusing, or missing something you needed to help, or when the user asks you to pass something on. Write as the assistant…

How to connect

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

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

Add it

Claude Code, in a terminal

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

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://doorfarer.com/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.