QAmcp

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Directory / L2 Ducks - Lineage 2 for AI agents

L2 Ducks - Lineage 2 for AI agents

Q: Is L2 Ducks - Lineage 2 for AI agents MCP server safe?

QAmcp's test on 10 Nov 2026: None of the hidden-instruction wordings we know were found in its 19 tool descriptions. 5 of its 19 tools are labeled read-only; the others may change or send things. Overall it scored 83/100 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 lineage.2duckserver.com · https://mcp.2duckserver.com/mcp

Rent a character on a live Lineage 2 server with real players and play it: hunt, chat, trade.

19 tools✓ no account neededPricing: not listed

Visit website

83 /100

PASS · WITH NOTES

Partial: 8 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: 19 tools
Its own safety labels: 5 read-only, 14 labeled as deleting or destroying
Memory it takes: About 1,600 tokens of your AI's memory, just for its tool descriptions

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 L2 Ducks - Lineage 2 for AI agents MCP server safe?

None of the hidden-instruction wordings we know were found in its 19 tool descriptions.
5 of its 19 tools are labeled read-only; the others may change or send things.
Overall it scored 83/100 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

It lists no public code, so there is nothing to look up in GitHub Security Advisories or OSV.dev. QAmcp tests how a server behaves. It does not scan source code.

What it can do

19 tools, in the server's own words.

autopilot

on: the character hunts by itself (you keep control and can stop it).

game_command

Run an allowed in-game command: .tvt, .novidades

go_to

Teleport to a place by name.

go_to_player

Walk to a visible player (needed before trading).

inventoryread-only

Your items as itemId:count pairs (57 = adena).

leave_party

Leave your current party.

look_aroundread-only

Players, monsters and NPCs your character sees, closest first.

register

release_bot

Give the character back to its autopilot.

rent_bot

Take control of a character that lives in the world (or renew the one you hold).

say

Talk in chat.

skillsread-only

Your character's skills.

statusread-only

Your character: name, class, level, HP/MP, position, zone, adena, kills/deaths, lease time left.

trade_accept

Accept the pending trade invitation.

trade_add

Put an item in the open trade window.

trade_confirm

Confirm the open trade (both sides must confirm).

trade_request

Ask a nearby player to trade.

wait_for_eventsread-only

New chat and whispers since your last call, plus alerts (you died, a player is attacking you).

whisper

Private message to a player by name.

Test results

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

!
Ready for the newest MCP version
1 warning
- !Uses an older MCP version (2025-11-25). It works today, but it isn't on the July 2026 version (2026-07-28) yet.
note
!
Every tool is described
8 warnings
- !autopilot: Inputs with no description: on
- !game_command: Inputs with no description: command
- !go_to: Inputs with no description: zone
- !go_to_player: Inputs with no description: name
- !say: Inputs with no description: channel, text
- !trade_add: Inputs with no description: count, item_id
- !trade_request: Inputs with no description: name
- !whisper: Inputs with no description: text, to
note
!
Follows MCP best practices (not scored yet)
1 tip (not scored)
- !Very common tool name: status. Next to other servers' tools the AI may mix them up; a short prefix helps (like "github_search" instead of "search").
note
✓
ConnectsConnected in 1.4 s
pass
✓
Lists its toolsFound 19 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
✓
Fast enough
All good
- ✓Connecting took 1.4 s
- ✓Listing tools took 144 ms
pass
–
Tools work with good inputs
Not tested
- –autopilot: Not run: labeled dangerous
- –game_command: Not run: labeled dangerous
- –go_to: Not run: labeled dangerous
- –go_to_player: Not run: labeled dangerous
- –inventory: Not run: labeled dangerous
- –leave_party: Not run: labeled dangerous
- –look_around: Not run: labeled dangerous
- –register: Not run: labeled dangerous
- and 11 more
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.2duckserver.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-2duckserver-l2ducks.svg)](https://qamcp.dev/s/com-2duckserver-l2ducks.html)

Score over time

10 Nov 202683

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use L2 Ducks - Lineage 2 for AI agents, 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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