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Directory / Czartery MCP

Czartery MCP

Q: Is Czartery MCP server safe?

QAmcp's test on 2 Nov 2026: None of the hidden-instruction wordings we know were found in its tool descriptions. 0 of its 4 tools are labeled read-only; the others may change or send things. Overall it scored 93/100 on 2 Nov 2026. A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

by mcps.wondel.ai · https://mcp.wondel.ai/czartery/mcp

Polish charter flight search across Rainbow, Itaka and TUI operators, prices in PLN.

4 tools✓ no account neededPricing: not listed

Visit website

93 /100

PASS · WITH NOTES

Partial: 8 of 11 checks · 2 Nov 2026

Is Czartery MCP server safe?

None of the hidden-instruction wordings we know were found in its tool descriptions.
0 of its 4 tools are labeled read-only; the others may change or send things.
Overall it scored 93/100 on 2 Nov 2026.

A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.

What it can do

4 tools, in the server's own words.

rainbow_search_charters

Charter flight destinations sold by Rainbow Tours (biletyczarterowe.r.pl) matching optional destination/origin/date filters: per destination you get the countr…

rainbow_search_outbound

Day-by-day outbound charter flights to ONE Rainbow destination in a date window: per day the cheapest price and every flight with origin, departure time, airli…

itaka_search_charters

Charter flight itineraries from Itaka.pl between a Polish origin and a charter destination: each itinerary carries full legs (airports, dates, times, carrier, …

tui_search_charters

Charter destinations sold on TUI.pl for a stay-length window, with per-person and total prices: filter by origin/destination airports and trip duration in days.

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Tools are labeled safe or dangerous
1 warning
- !4 of 4 tools have no safety label (read-only or dangerous): rainbow_search_charters, rainbow_search_outbound, itaka_search_charters, tui_search_charters
note
!
Follows MCP best practices (not scored yet)
2 tips (not scored)
- !4 tools not labeled read-only don't say whether running them twice is safe (idempotentHint): rainbow_search_charters, rainbow_search_outbound, itaka_search_charters, tui_search_charters
- !4 tools don't say whether they reach outside services like the web (openWorldHint): rainbow_search_charters, rainbow_search_outbound, itaka_search_charters, tui_search_charters
note
✓
ConnectsConnected in 28 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 4 tools
pass
✓
Every tool is describedAll 4 tools and their inputs are described
pass
✓
No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.
pass
✓
Fast enough
All good
- ✓Connecting took 28 ms
- ✓Listing tools took 54 ms
pass
–
Tools work with good inputs
Not tested
- –rainbow_search_charters: Not run: no safety label (if you own this server, test again in owner mode)
- –rainbow_search_outbound: Not run: no safety label (if you own this server, test again in owner mode)
- –itaka_search_charters: Not run: no safety label (if you own this server, test again in owner mode)
- –tui_search_charters: Not run: no safety label (if you own this server, test again in owner mode)
not tested
–
Bad inputs give a clean errorNot tested
not tested
–
Tools work togetherNo safe tool returned data to start a chain from, so chains were not tested (not counted either way)
not tested
–
No secrets leakedNo error messages to check
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://mcp.wondel.ai/czartery/mcp

Show this score on GitHub

Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.

[![QAmcp score](https://qamcp.dev/s/ai-wondel-czartery.svg)](https://qamcp.dev/s/ai-wondel-czartery.html)

Score over time

2 Nov 202693

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Czartery MCP, signed in with GitHub, one per person. Reviews never change the score.

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