Fly Frugal Travel Data
REMOTE · FLYFRUGAL.FYI
Read-only public itinerary previews, observed round-trip fares, and flight savings verified today.
Available components
Last scanned (21 hours ago)
Scores higher than 79% of remote servers
Reachable. Last reached 22 Oct 2026.
Category Maps and Location
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability73
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 807 tokens (~201/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management50
- Stability observed for 15 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 22 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 15 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 13 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 17. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 10. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 8 Oct 26 71
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 22 Oct 2026 · Probed https://flyfrugal.fyi/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=flyfrugal.fyi | CN=WE1,O=Google Trust Services,C=US | 28 Sept 2026 | 27 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 2c466b218d70f210ee3522c64e6491f |
| SANs: flyfrugal.fyi, www.flyfrugal.fyi, *.www.flyfrugal.fyi | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of flyfrugal.fyi. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| fyi. | present | 24340 | 8 | Verified |
| flyfrugal.fyi. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://flyfrugal.fyi/mcp | Verified | 200 | |
| http (plaintext) | http://flyfrugal.fyi/mcp | HTTPS enforced | 301 | https://flyfrugal.fyi/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_itinerary Get a published Fly Frugal itinerary preview ~141
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 (price_cents, currency), updated_at and pdf_ready. Use it to describe a trip to the user or decide whether the full guide fits; the complete paid day-by-day guide is never returned. An unknown slug returns an error.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | Itinerary slug from list_itineraries, lowercase and hyphenated, for example "japan" or "south-india". |
No output schema declared.
No examples provided.
get_todays_deals Get today's verified Fly Frugal deals ~206
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 prices that are freshly verified. Each deal has the same fields as list_flight_deals, plus count. If nothing was verified today the list is empty; say so instead of presenting older fares, or offer list_flight_deals for recent observations.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum number of deals to return (1 to 10, default 2). |
| nights | integer | – | Trip length in nights between the outbound and return flights (1 to 30, default 7). Only fares observed for this exact length are returned. |
| origin | string | – | Departure airport as a three-letter IATA code, such as SFO, JFK or ATL (case-insensitive). Omit to search deals from every tracked US airport. |
No output schema declared.
No examples provided.
list_flight_deals List current Fly Frugal flight deals ~272
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 has origin, destination_airport, label (airport name), country, places, departure_date and return_date, nights, price and currency (whole US dollars), airlines, longest_layover_minutes, observed_at, and Google's price insight when checked: google_price_signal (low, typical or high), google_usual_low/high, google_savings, google_share_url and google_signal_checked_at. Prices are observations that can change or sell out, so tell users to confirm before booking. For only deals re-verified today, use get_todays_deals.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Maximum number of deals to return (1 to 50, default 20). |
| nights | integer | – | Trip length in nights between the outbound and return flights (1 to 30, default 7). Only fares observed for this exact length are returned. |
| origin | string | – | Departure airport as a three-letter IATA code, such as SFO, JFK or ATL (case-insensitive). Omit to search deals from every tracked US airport. |
No output schema declared.
No examples provided.
list_itineraries List published Fly Frugal itineraries ~188
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, days_count, a preview, cover and first-day image URLs, price_cents and currency for the full guide, updated_at, and pdf_ready. Results are newest first. Only public previews are returned; the paid full guide is never included.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | Only return itineraries for this destination, matched case-insensitively against the full name, for example "Japan", "South Korea" or "Bali". Country codes such as "JP" do not match. Omit to list eve… |
| limit | integer | – | Maximum number of itineraries to return (1 to 50, default 24). |
No output schema declared.
No examples provided.
How do I install the Fly Frugal Travel Data MCP server?
Fly Frugal Travel Data is a hosted endpoint at https://flyfrugal.fyi/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · flyfrugal.fyi
claude mcp add --transport http fyi-flyfrugal-travel-data 'https://flyfrugal.fyi/mcp'
What is the Fly Frugal Travel Data MCP server?
Fly Frugal Travel Data is an MCP server listed in the public MCP registry as fyi.flyfrugal/travel-data. Read-only public itinerary previews, observed round-trip fares, and flight savings verified today. This page covers its hosted endpoint (https://flyfrugal.fyi/mcp).
Is the Fly Frugal Travel Data MCP server safe to use?
Fly Frugal Travel Data scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Fly Frugal Travel Data MCP server expose?
Fly Frugal Travel Data exposes 4 tools: list_itineraries, get_itinerary, list_flight_deals, get_todays_deals. Their descriptions and schemas cost roughly 807 tokens of context every time the server is loaded.
Does the Fly Frugal Travel Data MCP server require authentication?
No. We connected to Fly Frugal Travel Data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Fly Frugal Travel Data MCP server still maintained?
Fly Frugal Travel Data is still listed as active in the MCP registry. We last reached this channel on 22 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.