Ancillary or client protocol

Pueblo

Pueblo Enhanced MUD Protocol

Historical Not in common current use Legacy

Adds styling, images, sound, forms, links, panes, and historical VRML features for Pueblo-enhanced clients.

Protocol overview

First seen: Mid-1990s
Present-day status: Historical
In use today?: No common current use was verified.
Legacy?: Yes. It may still matter for compatibility or historical systems.
Layer: Ancillary or client protocol
Transport: In-band HTML-like multimedia stream
Research validated: 2026-08-29

Current use and fit

Relevant to historical MU*, MUSH, and MOO deployments; not a modern general-client target.

Implementation essentials

Detect the PUEBLOCLIENT response before entering enhanced mode.
Sanitize markup and automated actions aggressively.

Compatibility and safety notes

Rich markup crosses a substantial trust boundary.
Do not globally switch ordinary user text into HTML.

Original specifications and sources

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.