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Fly Frugal MCP server

Which MCP servers are Fly Frugal'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 2026-10-26

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Whose server it is
  • Registry namefyi.flyfrugal/travel-dataverified in the MCP registry

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

When we asked itchecked 2026-10-26
  • Stateanswerschecked 2026-10-26
  • Tools4
  • Server calls itselfflyfrugal-travel-data
  • Server version1.1.0
  • Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 34 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.
  • Checked on 2 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: 2, the first on 2026-10-26
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer378 ms
  • Space in an agent's context≈ 1,131 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • not sure · compare current fares against past prices for the same route
  • not sure · track fare drops on a chosen route and dates
  • cannot · check layovers and overnight legs before booking a cheap fare

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 offers4 tools · read 2026-10-26
  • list_itineraries

    Browse Fly Frugal's published day-by-day budget travel itineraries. Use this to discover which destinations have a guide, then call get_itinerary with a returned slug for one guide's preview. Each item has slug, country_name, tagline…

  • get_itinerary

    Get the public preview of one Fly Frugal itinerary by its slug, as returned by list_itineraries. Returns the same fields as a list item: country_name, tagline, days_count, the preview content, image URLs, the full guide's price…

  • list_flight_deals

    List the cheapest round-trip economy fares Fly Frugal has recently observed, from one departure airport or across all tracked US airports. Use it for questions like "cheap flights from SFO" or "where can I fly for under $500". Each deal…

  • get_todays_deals

    Return only the strongest current deals: fares whose Google savings insight was checked today (America/Los_Angeles calendar day) and shows a positive saving versus the usual price. Use it when the user asks for today's deals or wants…

How to connect

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

{
  "mcpServers": {
    "travel-data": {
      "type": "http",
      "url": "https://flyfrugal.fyi/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http flyfrugal https://flyfrugal.fyi/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://flyfrugal.fyi/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.