Ancillary or client protocol

MSLP

MUD Server Link Protocol

Niche use Documented current use

A lightweight convention for clickable links and actions without its own Telnet option.

Protocol overview

First seen: Date not established
Present-day status: Niche use
In use today?: Yes, with documented current use.
Legacy?: No.
Layer: Ancillary or client protocol
Transport: ANSI underline and OSC 68 conventions; advertised by MTTS
Research validated: 2026-08-29

Current use and fit

Native adoption is narrow, with TinTin++ the clearest documented implementation.

Implementation essentials

Detect MTTS bit 1024 before emitting MSLP forms.
Always provide a usable plain-text fallback.

Compatibility and safety notes

Do not use MSLP as the only hyperlink mechanism.
OSC 68 forms are not equivalent to universally supported OSC 8 links.

Original specifications and sources

MUDhalla specification Primary
MUD Standards preservation Preservation

Where an original site has disappeared, a preservation archive is linked and identified as such. MUDVerse does not claim authorship of the original protocol.