QAmcp

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Directory / CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine

CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine

Q: Is CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine MCP server safe?

QAmcp's test on 10 Nov 2026: None of the hidden-instruction wordings we know were found in its 8 tool descriptions. Its error messages showed no secrets or internal details. All 8 of its tools are labeled read-only. Overall it scored 70/100 on 10 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 checkchinatransit.com · https://checkchinatransit.com/api/mcp

Verify China 240-hour (formerly 144h) visa-free transit eligibility, ports & third-country routes.

8 tools✓ all read-only✓ no account neededPricing: not listed

Visit website

70 /100

FAIL

11 of 11 checks · 10 Nov 2026

Test it now for current results

At a glance

Runs where: On their server. What you send to it goes to them.
What you need: Nothing: it answered without a login
Tools: 8 tools
Its own safety labels: 8 read-only
Memory it takes: About 1,400 tokens of your AI's memory, just for its tool descriptions
Largest answer: About 0.6 KB in our test
Speed: Average answer in our test: 35 ms

Tokens are an estimate: the characters in its tool names, descriptions and inputs, divided by 4. The exact number depends on your AI model. Safety labels are what the server says about itself. From our latest test, 10 Nov 2026.

Is CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine MCP server safe?

None of the hidden-instruction wordings we know were found in its 8 tool descriptions.
Its error messages showed no secrets or internal details.
All 8 of its tools are labeled read-only.
Overall it scored 70/100 on 10 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 this test does not check

Its source code and packages.
What a tool quietly does behind the scenes, such as writing a file or calling another service.
Instructions hidden inside live tool answers. We only look for those in tool descriptions.
Hidden instructions worded in a way our list doesn't know yet.
Tools that could change something. Those are read, never run.

What QAmcp can and can't see · How to tell if an MCP server is safe · Hidden instructions · Prompt injection

Known security advisories

Not looked up yet. QAmcp tests how a server behaves. It does not scan source code.

What it can do

8 tools, in the server's own words.

check_china_twov_nationality_eligibilityread-only

Verify whether a passport nationality qualifies for China 240-hour (upgraded from 72/144-hour) Visa-Free Transit (TWOV) and 24-hour direct airside transit.

validate_third_country_itinerary_ruleread-only

Validate whether a flight routing (Origin Country/Region A -> Mainland China B -> Destination Country/Region C, including Hong Kong, Macau, or Taiwan) satisfie…

calculate_transit_stay_deadlineread-only

Calculate the exact legal departure deadline under China Immigration midnight-next-day counting rules (00:00 the day following arrival) for 240-hour / 144-hour…

lookup_china_transit_port_zoneread-only

Look up permitted stay regions and approved entry/exit airports, seaports, and rail ports for Beijing-Tianjin-Hebei, Shanghai-Jiangsu-Zhejiang, Guangdong, Chen…

check_24hour_direct_transit_rulesread-only

Check rules for the 24-hour visa-free transit policy available to almost all nationalities, including multi-stop domestic transfers within 24 hours and airport…

get_airline_checkin_boarding_checklistread-only

Generate the mandatory printed document checklist required at airline check-in desks and China Immigration Temporary Entry Permit counters to prevent erroneous…

lookup_china_visa_photo_specsread-only

Retrieve official Chinese Embassy COVA digital visa photo and physical print dimensions (33mm x 48mm, head height 28-33mm, pure white RGB 255,255,255 backgroun…

compare_twov_vs_unilateral_30day_visa_freeread-only

Compare whether a traveler can use China’s 30-day unilateral visa-free entry (allows round-trip flights) vs 240-hour TWOV (requires third-country onward ticket…

Test results

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

✕
Tools work with good inputs
1 failed, 1 warning
- ✕calculate_transit_stay_deadline: Crashed: server error (HTTP 500)
- !lookup_china_visa_photo_specs: Answered, but it gives the exact same answer to bad input as to good input, so it may be ignoring what it is sent
- and 6 more
fail
✕
Bad inputs give a clean error
1 failed, 14 warnings
- !check_china_twov_nationality_eligibility: Accepted missing required input "nationality" without complaining
- !check_china_twov_nationality_eligibility: Accepted wrong type for "nationality" without complaining
- !validate_third_country_itinerary_rule: Accepted missing required input "inboundFrom" without complaining
- !validate_third_country_itinerary_rule: Accepted wrong type for "inboundFrom" without complaining
- !calculate_transit_stay_deadline: Accepted missing required input "arrivalDateIso" without complaining
- ✕calculate_transit_stay_deadline: Crashed on wrong type for "arrivalDateIso"
- !lookup_china_transit_port_zone: Accepted missing required input "cityOrAirportCode" without complaining
- !lookup_china_transit_port_zone: Accepted wrong type for "cityOrAirportCode" without complaining
- and 7 more
fail
!
Ready for the newest MCP version
1 warning
- !Uses an older MCP version (2025-06-18). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
note
!
Follows MCP best practices (not scored yet)
1 tip (not scored)
- !7 tools answer with structured data but don't declare its shape (outputSchema): check_china_twov_nationality_eligibility, validate_third_country_itinerary_rule, lookup_china_transit_port_zone, check_24hour_direct_transit_rules, get_airline_
note
✓
ConnectsConnected in 180 ms
pass
✓
Lists its toolsFound 8 tools
pass
✓
Every tool is describedAll 8 tools and their inputs are described
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
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 180 ms
- ✓Listing tools took 26 ms
- ✓Average tool answer: 35 ms
- ✓check_24hour_direct_transit_rules: Slowest tool: check_24hour_direct_transit_rules (50 ms)
pass
✓
No secrets leakedChecked 2 error messages: no secrets or internal details
pass
–
Tools work togetherNo tool's answer could be fed into another tool, so there were no chains to test (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://checkchinatransit.com/api/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/com-checkchinatransit-mcp.svg)](https://qamcp.dev/s/com-checkchinatransit-mcp.html)

Score over time

10 Nov 202670

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine, signed in with GitHub, one per person. Reviews never change the score.

Is this your server? Get an alert the moment it breaks.

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