# MCP's default query parameter hallucination

**URL:** https://meta.discourse.org/t/mcps-default-query-parameter-hallucination/390091
**Category:** Support
**Tags:** mcp
**Created:** [December 1, 2025, 7:54pm UTC](https://meta.discourse.org/t/mcps-default-query-parameter-hallucination/390091 "2025-12-01T19:54:13Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Falco](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/falco/32/179432_2.png) [@Falco](https://meta.discourse.org/u/Falco)
#### Post date: [December 1, 2025, 8:33pm UTC](https://meta.discourse.org/t/mcps-default-query-parameter-hallucination/390091/2 "2025-12-01T20:33:38Z")

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> [@deviantintegral](#):
>
> I noticed that it recommends a default query parameter of `order:latest-post` which looks to be hallucinated.

`latest-post` is a valid parameter in the `filter` route:

> <https://github.com/discourse/discourse/blob/main/lib/topics_filter.rb#L265>

What do you mean?

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