VitaminMCP

Array arguments were being dropped. events_query and state_query answered questions nobody asked, and said nothing about it.

Fixed

A types or permissions list is now read rather than discarded.

Asking a live server for BlockRedstoneEvent returned HopperInventorySearchEvent. On a busy server that reads as "lots of events" rather than as a bug — the filter was gone and the query answered something else entirely.

These tools are proxied by mcp-server, which publishes them without a parameter schema because it cannot know one until a session exists. A client with no types to work from therefore sends every argument as a string. Numbers survived that, since parsing them is forgiving; arrays hit an isArray() check, failed it, and became a null filter.

state_query's permissions had the same fault and a worse symptom. A dropped list comes back as "permissions": [], which does not look like a lost argument — it looks like the player has none. Every permission check made through that tool was answering that.

Arrays, arrays written as strings, and plain comma-separated names all work now, and an argument that cannot be read is refused instead of quietly returning everything.

Upgrading

The agent jar is the one that matters here — the fix is server-side. mcp-server.jar and bot-runner-772.jar are unchanged from 1.2.0 apart from their version string.

1.2.0 shipped without this fix. Use this release instead.

Setup and usage: README