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Directory / Arcana

Arcana

Q: Is Arcana MCP server safe?

QAmcp's test on 1 Nov 2026: None of the hidden-instruction wordings we know were found in its tool descriptions. 5 of its 6 tools are labeled read-only; the others may change or send things. Overall it scored 87/100 on 1 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 arcanasf.com · https://mcp.arcanasf.com/mcp

Arcana: San Francisco wine bar, restaurant, art space and music venue. Reservations, private events.

6 tools✓ no account neededPricing: not listed

Visit website

87 /100

PASS · WITH NOTES

Partial: 10 of 11 checks · 1 Nov 2026

Is Arcana MCP server safe?

None of the hidden-instruction wordings we know were found in its tool descriptions.
5 of its 6 tools are labeled read-only; the others may change or send things.
Overall it scored 87/100 on 1 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

6 tools, in the server's own words.

get_business_inforead-only

Start here.

get_reservation_optionsread-only

Returns walk-in guidance and the public Resy reservation link.

get_private_event_offerread-only

Returns Arcana qualitative private-event offerings and the inquiry form link.

list_upcoming_eventsread-only

Returns upcoming public events at Arcana as published on Resident Advisor and Luma, with a link to each listing.

prepare_inquiryread-only

Prepares a prefilled link for a private-event inquiry from whatever details are known.

submit_inquiry

Sends a private-event inquiry to the Arcana booking team.

Test results

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

!
Every tool is described
2 warnings
- !prepare_inquiry: Inputs with no description: firstName, lastName, email, company, occasion, guestCount, eventDate, alternativeDate, startTime, endTime, budget, additionalInfo, howHeard
- !submit_inquiry: Inputs with no description: firstName, lastName, email, company, occasion, guestCount, eventDate, alternativeDate, startTime, endTime, budget, additionalInfo, howHeard
note
!
Bad inputs give a clean error
1 warning
- !prepare_inquiry: Accepted wrong type for "firstName" without complaining
note
✓
ConnectsConnected in 182 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 6 tools
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
✓
Tools work with good inputs
All good
- ✓get_business_info: Worked (419 ms)
- ✓get_reservation_options: Worked (71 ms)
- ✓get_private_event_offer: Worked (159 ms)
- ✓list_upcoming_events: Worked (189 ms)
- ✓prepare_inquiry: Worked (73 ms)
- –submit_inquiry: Not run: labeled as changing data
pass
✓
Fast enough
All good
- ✓Connecting took 182 ms
- ✓Listing tools took 74 ms
- ✓Average tool answer: 182 ms
- ✓get_business_info: Slowest tool: get_business_info (419 ms)
pass
✓
Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guide
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
–
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.arcanasf.com/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-arcanasf-arcana.svg)](https://qamcp.dev/s/com-arcanasf-arcana.html)

Score over time

1 Nov 202687

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Arcana, 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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