weekendflights
REMOTE · WEEKENDFLIGHTS.APP
Weekend flight price calendar: the cheapest round trip for every weekend of the next 12 months.
Available components
Last scanned (3 hours ago)
Scores higher than 47% of remote servers
Reachable. Last reached 19 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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- 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 Usability60
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1031 tokens (~343/item across 3 items; 3 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 Management53
- Stability observed for 16 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 3 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.
- 19 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 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 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “weekend_prices” rewrote its description, which is the text the model reads security
- Schema quality: excellent → good functional
- “cheapest_weekends” reworded the description of “combo” cosmetic
- “weekend_prices” reworded the description of “combo” cosmetic
- 12 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 30. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 9 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 13 to 23. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 7 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 5 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
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 19 Oct 2026 · Probed https://weekendflights.app/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=weekendflights.app | CN=WE1,O=Google Trust Services,C=US | 30 Aug 2026 | 28 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 204cb54806decb660ed3351182995c02 |
| SANs: weekendflights.app, *.weekendflights.app | ||||||
| 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 weekendflights.app. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| app. | present | 23684 | 8 | Verified |
| weekendflights.app. | 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://weekendflights.app/mcp | Verified | 200 | |
| http (plaintext) | http://weekendflights.app/mcp | Inconclusive | 405 |
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 →
cheapest_weekends Cheapest cached weekends from one origin ~324
The cheapest weekends from one origin across every destination that has a calendar under these filters, sorted by price. Optional month filter (yyyy-mm). Takes the same filters as weekend_prices. This tool reads what is already priced; it does not search every destination. A destination that is absent can be priced with one weekend_prices call for that pair. Pro only: this tool is Anywhere (every destination from one origin). Without Pro it answers pro_required with the Anywhere page url. One route at a time is free with weekend_prices.
| Name | Type | Req | Description |
|---|---|---|---|
| adults | integer | – | Default 1. |
| cabin | string | – | Default "economy". |
| children | integer | – | Default 0. |
| combo | string | – | Trip shape. Default "fri-sun". |
| currency | string | – | ISO 4217 code. Default: the native currency of the origin. |
| infants | integer | – | Default 0. |
| limit | integer | – | How many weekends to return. Default 10. |
| month | string | – | Limit to one month, format yyyy-mm. |
| origin | string | yes | Departure airport IATA code, e.g. "ZRH". |
| out_from | string | – | Earliest outbound departure, "HH:MM". |
| out_to | string | – | Latest outbound departure, "HH:MM". |
| ret_from | string | – | Earliest return departure, "HH:MM". |
| ret_to | string | – | Latest return departure, "HH:MM". |
| stops | string | – | "any" (default) or "nonstop". |
No output schema declared.
No examples provided.
list_origins List departure airports with a cached weekend calendar ~61
Returns the departure airports (IATA) that have at least one priced weekend calendar, with the count of priced destinations per origin. Start here to learn what cheapest_weekends can answer at once. weekend_prices works for any airport pair and searches live when needed.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
weekend_prices Weekend round-trip prices for one route ~465
Every weekend of the next 12 months for one origin-destination pair, with the cheapest round-trip price per weekend and the time the price was observed ("as_of"). Cached prices answer at once; weekends not priced yet are searched live during the call, the way a page visit searches them (usually 10-40 s, at most ~55 s). If the search does not finish, the answer says which weekends are still open and to call again. Takes every filter the route page has: trip shape (combo), cabin, stops, passengers, departure and return time windows, currency. Free: fri-sun, economy, any stops, any passenger mix, no time window. Pro session cookie: other combos, other cabins, time windows.
| Name | Type | Req | Description |
|---|---|---|---|
| adults | integer | – | Default 1. Free. At most 9 travellers in total. |
| cabin | string | – | Default "economy" (free). Other cabins need a Pro session cookie. |
| children | integer | – | Ages 2-11. Default 0. Free. |
| combo | string | – | Trip shape: out day and back day as "{out}-{back}" with 3-letter days ("tue-thu"); the same day twice is a day trip. Default "fri-sun" (free). Other shapes need a Pro session cookie. |
| currency | string | – | ISO 4217 code. Default: the native currency of the origin (ZRH → CHF, BCN → EUR). |
| dest | string | yes | Arrival airport IATA code, e.g. "BCN". |
| infants | integer | – | Under 2. Default 0. Free. |
| origin | string | yes | Departure airport IATA code, e.g. "ZRH". |
| out_from | string | – | Earliest outbound departure, "HH:MM" local. Pro. Cached only for weekends whose flight detail is stored. |
| out_to | string | – | Latest outbound departure, "HH:MM". Pro. |
| ret_from | string | – | Earliest return departure, "HH:MM". Pro. |
| ret_to | string | – | Latest return departure, "HH:MM". Pro. |
| stops | string | – | "any" (default) or "nonstop". Free. |
No output schema declared.
No examples provided.
How do I install the weekendflights MCP server?
weekendflights is a hosted endpoint at https://weekendflights.app/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 · weekendflights.app
claude mcp add --transport http app-weekendflights-weekendflights 'https://weekendflights.app/mcp'
What is the weekendflights MCP server?
weekendflights is an MCP server listed in the public MCP registry as app.weekendflights/weekendflights. Weekend flight price calendar: the cheapest round trip for every weekend of the next 12 months. This page covers its hosted endpoint (https://weekendflights.app/mcp).
Is the weekendflights MCP server safe to use?
weekendflights scores 65 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 weekendflights MCP server expose?
weekendflights exposes 3 tools: list_origins, weekend_prices, cheapest_weekends. Their descriptions and schemas cost roughly 850 tokens of context every time the server is loaded.
Does the weekendflights MCP server require authentication?
No. We connected to weekendflights without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the weekendflights MCP server still maintained?
weekendflights is still listed as active in the MCP registry. We last reached this channel on 19 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.