Epiktistes

Epiktistes is my home in the Fediverse. It is an instance of Ktistec, a single-user ActivityPub server like Mastodon, but with fewer users and fewer commits. Here's my introduction (last updated early-2025).

I wrote a series of posts about optimizing the performance of the Ktistec server, its build time, and its executable size: part 1, part 2, part 3, part 4, and part 5.

Some things I regularly write about, organized by hashtag:

I also wrote some #pointfreeverse.

Todd SundstedWill Richardson

Type-Checking SQL Queries With Crystal Macros

My #crystallang macro powers are unmatched.

willhbr.net/2026/08/15/crystal

Todd Sundsted

Vacation reading…

book titled, “50 Years of Text Games / From Oregon Trail to AI Dungeon and everything in between.”

I started with the chapters on MUDs and LambdaMOO, and Inform and Interactive Fiction. Now from the beginning…

Todd SundstedWeek in Fediverse :fediverse_light:
Todd Sundsted
Todd Sundsted
Release v3.11.0 of Ktistec

Despite the fact that a shared inbox is an optional actor endpoint, some servers assume Mastodon and deliver to /inbox instead of the actor's inbox. Okay, fine. This release of Ktistec includes support for shared inboxes.
🖐️🎤

Here's the full changelog:

Added

  • Accept inbound activities at a shared inbox.
  • Bound the time an inbound activity spends fetching remote objects.
  • Collapse long posts behind a generated summary.

Fixed

  • Keep a repeat follow request from ignoring the response already sent.
  • Fix poll's closed namespace, and treat closed and endTime interchangeably.
  • Remove geometry adjustments from the highlighted CSS class.

Changed

  • Be more liberal with the timestamp formats accepted.

My current passion project is the Ktistec feed deck—multiple, parallel panes in the same window, each displaying an algorithmic feed. It will be in usable shape in time for the next release.

#ktistec #crystallang #activitypub #fediverse

Todd Sundsted

The culmination of my recent work on algorithmic feeds is a #fediverse feed reading machine for all of the topics I care about.

Image of an ultrawide monitor showing the Ktistec feed deck across six feeds.

#ktistec

Todd Sundsted@reiver ⊼ (Charles) :batman:
Todd Sundsted

The federal Computer Fraud and Abuse Act prohibits unauthorized access to protected computers. If a tool you build and operate accesses another person’s or organization’s computers without authorization, you may be criminally liable. The fact that the tool uses an LLM or operates autonomously does not, by itself, create an exception.

Todd Sundsted

intruder alert!

photo of a squirrel eating from our bird feeder

that food is for the birds, damn it!

Todd Sundsted

there was a lot of grief over tags.pub but I’ve found it incredibly valuable. #tagspub